Fluorescent Concentrator Patents (Class 136/247)
  • Patent number: 10381497
    Abstract: An apparatus and method for optical-power-transfer (OPT). A light source converts electrical energy into light, and the light is transmitted from the active layer of the light source directly to the active layers of a series of photovoltaic (PV) devices without first passing through a conduction layer of the PV device. Thus, absorption in the conduction layer is avoided, and the efficiency of the OPT system is improved. The PV devices are configured to each generate equal current, and the PV devices are electrically connected in series. PV devices are arranged in series with light first propagating through PV devices closer to the light source, and farther PV devices having a longer propagation length, such that the light absorbed and current generated by each PV device is equal to the other PV devices. In one implementation, the PV devices are configured in a laser cavity with the light source.
    Type: Grant
    Filed: January 5, 2018
    Date of Patent: August 13, 2019
    Inventor: Masanori Ishigaki
  • Patent number: 10217892
    Abstract: This application is related to a method of manufacturing a solar cell device comprising providing a substrate comprising Ge or GaAs; forming a first tunnel junction on the substrate, wherein the first tunnel junction comprises a first n-type layer comprising InGaP:Te, and a first alloy layer comprising AlxGa(1?x)As and having a lattice constant; adding a material into the first alloy layer to change the lattice constant; and forming a first p-n junction on the first tunnel junction.
    Type: Grant
    Filed: July 26, 2016
    Date of Patent: February 26, 2019
    Inventors: Rong-Ren Lee, Yung-Szu Su, Shih-Chang Lee
  • Patent number: 10050216
    Abstract: A condensed cyclic compound and an organic light-emitting device, the condensed cyclic compound being represented by one of the following Formulae 1 or 2:
    Type: Grant
    Filed: April 17, 2015
    Date of Patent: August 14, 2018
    Inventors: Myeongsuk Kim, Sungwook Kim, Jaehong Kim, Jinsoo Hwang
  • Patent number: 9960306
    Abstract: A condensing photoelectric conversion apparatus includes a first photoelectric conversion module and a second photoelectric conversion module. The first and second condensing photoelectric conversion modules each include a power generating element, a condensing lens located on the power generating element and having a front surface with a convex portion and a flat rear surface, a transparent first resin located between the power generating element and the rear surface of the condensing lens, a colored second resin located on the rear surface of the condensing lens and around the power generating element, and a third resin located between the condensing lens of the first photoelectric conversion module and the condensing lens of the second photoelectric conversion module, and having a refractive index n1 satisfying a relational expression n0?0.05?n1?n0+1.0 with a refractive index n0 of the condensing lens.
    Type: Grant
    Filed: April 10, 2015
    Date of Patent: May 1, 2018
    Inventors: Tohru Nakagawa, Akio Matsushita
  • Patent number: 9905765
    Abstract: Provided herein are perovskite-polymer films, methods of forming polymer-perovskite films, and devices including polymer-perovskite films. The polymer-perovskite films may include a plurality of methylammonium lead chloride (CH3NH3PbCl3) nanopillar crystals embedded in a polymer matrix. The devices can be optoelectronic devices, such as light emitting diodes, which include polymer-perovskite films. The polymer-perovskite films of the devices can be hole transport layers in the devices. The methods of making films may include spin casting a precursor solution followed by thermal annealing.
    Type: Grant
    Filed: August 12, 2016
    Date of Patent: February 27, 2018
    Assignee: Florida State University Research Foundation, Inc.
    Inventors: Biwu Ma, Hanwei Gao, Yu Tian, Yichuan Ling
  • Patent number: 9899556
    Abstract: Tandem solar cells comprising two or more solar cells connected in a solar cell stack via pn diode tunnel junctions and methods for fabricating the tandem solar cells using epitaxial lift off and transfer printing are provided. The tandem solar cells have improved tunnel junction structures comprising a current tunneling layer integrated between the p and n layers of the pn diode tunnel junction that connects the solar cells.
    Type: Grant
    Filed: September 14, 2015
    Date of Patent: February 20, 2018
    Assignee: Wisconsin Alumni Research Foundation
    Inventors: Zhenqiang Ma, Kanglin Xiong, Hongyi Mi, Tzu-Hsuan Chang, Shaoqin Gong, Jung-Hun Seo
  • Patent number: 9853172
    Abstract: Luminescent solar concentrator (LSC) comprising an aqueous microemulsion including at least one photoluminescent compound. Said luminescent solar concentrator (LSC) can be advantageously used in solar devices (i.e. devices for exploiting solar energy) such as, for example, photovoltaic cells (or solar cells), photoelectrolytic cells. Said luminescent solar concentrator (LSC) can also be advantageously used in photovoltaic windows.
    Type: Grant
    Filed: December 27, 2013
    Date of Patent: December 26, 2017
    Assignee: Eni S.p.A.
    Inventors: Lilliana Gila, Roberto Fusco, Emilio Lucchelli
  • Patent number: 9746670
    Abstract: The invention relates to a device for presenting information near the eyes, comprising a support (12) that can be carried on the head (10) of a user and comprising a monocular display unit (16) which is disposed on the support (12) and is positioned in a peripheral region of the field of vision of a first eye (14) of the user during use. According to a first aspect of the invention, a light-collecting unit (18, 20) on which ambient light can impinge is disposed on the support (12), and the light-collecting unit (18, 20) is coupled to the display unit (16) in order to illuminate same.
    Type: Grant
    Filed: February 3, 2011
    Date of Patent: August 29, 2017
    Inventors: Jean-Michel Asfour, Hans-Peter Haar
  • Patent number: 9728665
    Abstract: A luminescent concentrator for solar light is provided. The luminescent concentrator comprises a wavelength-selective filter, an energy concentrating area, and a luminescent material. The wavelength-selective filter is adapted to pass the solar light and to reflect light emitted by the luminescent material. Further, a method for concentrating solar light is provided. The method comprises the steps of (a) passing incident solar light through a wavelength-selective filter and an energy concentrating area onto a luminescent material, and (b) converting the incident solar light in the luminescent material to light having a wavelength reflectable by the wavelength-selective filter. The method further comprises a step (c) of concentrating the converted light in a pre-determined area arranged between the wavelength-selective filter and the luminescent material.
    Type: Grant
    Filed: August 19, 2010
    Date of Patent: August 8, 2017
    Inventors: Cornelis Reinder Ronda, Dirk Kornelis Gerhardus De Boer
  • Patent number: 9605875
    Abstract: A solar energy converter comprising: a solar energy absorber, the solar energy absorber comprising a photovoltaic element; a heat transfer element in thermal contact with the solar energy absorber; a primary heat exchanger in thermal contact with the heat transfer element; a secondary heat exchanger; and a heat transfer control element; wherein the heat transfer control element is arranged to selectively place the secondary heat exchanger either in thermal contact with the heat transfer element or out of thermal contact with the heat transfer element.
    Type: Grant
    Filed: March 21, 2012
    Date of Patent: March 28, 2017
    Assignee: Naked Energy Ltd
    Inventors: Richard Boyle, Christophe Williams, Norman Cottington
  • Patent number: 9584065
    Abstract: The invention relates to a solar cell structure (10) having at least one transparent photovoltaic cell (42), in particular having a dye solar cell or a thin-film semiconductor cell. It comprises at least one polymer layer (36) which is provided with a fluorescent material, or a mixture of a plurality of fluorescent materials, and covers the at least one transparent photovoltaic cell (42).
    Type: Grant
    Filed: February 2, 2015
    Date of Patent: February 28, 2017
    Assignee: BASF SE
    Inventors: Alfred Rennig, Markus Hammermann, Felix Eickemeyer
  • Patent number: 9513158
    Abstract: The present invention is solar collection data device having a main housing with means to measure and record the sun's radiance over a period of time encased in the housing. The main housing is mounted to a platform. The platform has means to attach to a variety of surfaces, including a roof. A photovoltaic cell and a photo sensor are integrally formed in the cover of the main housing. The output of the photovoltaic cell and the photo sensor will be logged and used in determining the amount of sunlight reaching the unit.
    Type: Grant
    Filed: May 14, 2015
    Date of Patent: December 6, 2016
    Inventor: Harry Michael Dougherty
  • Patent number: 9406825
    Abstract: A stacked and integrated electric power generating device for capturing multiple light sources for power generation has a first concentrating photovoltaic module and a second concentrating photovoltaic module. The first concentrating photovoltaic module 10 has a transparent solar concentrating panel and a thin film solar cell. The second concentrating photovoltaic module is positioned below the first concentrating photovoltaic module with an interval, such that the first and second concentrating photovoltaic modules are in the form of a stacked and integrated structure, and the second concentrating photovoltaic module can absorb the light concentrated by the transparent solar concentrating panel to generate electric power.
    Type: Grant
    Filed: May 22, 2015
    Date of Patent: August 2, 2016
    Inventor: Chia-Lin Chen
  • Patent number: 9373740
    Abstract: Provided is a wavelength converting structure for near-infrared rays and a solar cell using the same. More particularly, provided is a novel wavelength converting structure for near-infrared rays using gap plasmon characteristics and up-conversion nanoparticles. When applying the wavelength converting structure for near-infrared rays to a solar cell, it is possible to convert the light within a wavelength range of near-infrared rays into electric energy so that the photoconversion efficiency may be improved.
    Type: Grant
    Filed: January 27, 2015
    Date of Patent: June 21, 2016
    Inventors: Hyungduk Ko, Ho Seong Jang, Doo-Hyun Ko, Il Ki Han, Gi Yong Lee
  • Patent number: 9362519
    Abstract: Two-photon polymerization is used to embed a quantum dot structure in an electro-optical component. The electro-optical component can be a polymer component, LED, OLED, LEC, or graphene component, for example. The efficiency and characteristics of the components are improved or influenced. The quantum dot structure can emit light, convert light from other layers of the component, or influence the conductivity in the component, for example. A method of producing an electro optical fractal antenna by two-photon polymerization is also disclosed.
    Type: Grant
    Filed: September 6, 2013
    Date of Patent: June 7, 2016
    Inventors: Martin Siegel, Verena Eckbauer
  • Patent number: 9334444
    Abstract: The present invention relates to sorohalide compounds having formula A3B2X9, where A is an alkali metal, B is a rare earth metal, and X is a halogen. Optionally, the sorohalide includes a dopant D. Such undoped and doped sorohalides are useful as scintillation materials or phosphors for any number of uses, including for radiation detectors, solid-state light sources, gamma-ray spectroscopy, medical imaging, and drilling applications.
    Type: Grant
    Filed: February 11, 2014
    Date of Patent: May 10, 2016
    Assignee: Sandia Corporation
    Inventors: Pin Yang, Haoran Deng, F. Patrick Doty, Xiaowang Zhou
  • Patent number: 9306095
    Abstract: A solar cell includes: a substrate having heat dissipating characteristics; a solar cell bonded to the substrate such that the solar cell is electrically connected on a first conductive line and a second conductive line, which are disposed on a surface of the substrate; a lens, which is bonded to a transparent electrode of the solar cell; a plurality of projections, which maintain a gap between the substrate and the lens; tapered hole sections in the substrate, each of said tapered hole sections having a tapered section of each of the protruding sections fitted therein; and a sealing resin applied to the gap.
    Type: Grant
    Filed: October 19, 2012
    Date of Patent: April 5, 2016
    Assignee: Panasonic Intellectual Property Management Co., Ltd.
    Inventor: Kazuhiro Nobori
  • Patent number: 9263605
    Abstract: A solar concentrator comprising: a light-transmissive sheet including: a plurality of luminescent particles capable of becoming excited by absorbing light within at least a first spectrum of absorption frequencies and, once excited, capable of being stimulated to emit light having a spectrum within at least a first spectrum of emission frequencies; and a first light-guide; and a light source for generating a pulsed probe light having a spectrum, at least a portion of which is within at least the first spectrum of emission frequencies, for stimulating at least one of the excited luminescent particles having absorbed light within the first spectrum of absorption frequencies such that when the probe light traveling in a first direction of travel stimulates the excited luminescent, the excited luminescent particles emit emitted light having a spectrum within the first spectrum of emission frequencies in the first direction of travel of the probe light.
    Type: Grant
    Filed: April 20, 2012
    Date of Patent: February 16, 2016
    Assignee: MORGAN SOLAR INC.
    Inventors: John Paul Morgan, Pascal Dufour
  • Patent number: 9178088
    Abstract: A method for fabricating a solar cell generally comprises delivering a solar cell substructure to a chamber. Electromagnetic radiation is generated using a wave generating device that is coupled to the chamber such that the wave generating device is positioned proximate to the solar cell substructure. The electromagnetic radiation is applied onto at least a portion of the solar cell substructure to facilitate the diffusion of at least one metal element through at least a portion of the solar cell substructure such that a semiconductor interface is formed between at least two different types of semiconductor materials of the solar cell substructure.
    Type: Grant
    Filed: September 13, 2013
    Date of Patent: November 3, 2015
    Assignee: TSMC Solar Ltd.
    Inventors: Wen-Tsai Yen, Jyh-Lih Wu, Wei-Lun Xu, Chung-Hsien Wu
  • Patent number: 9123846
    Abstract: A photovoltaic module including a plate transparent to the incident electromagnetic radiation, a photovoltaic cell including an active face arranged facing said transparent plate, a spectral conversion element including a luminescent material formed by at least a first spectral conversion area arranged facing a lateral face of the photovoltaic cell, a direct transmission area separating the transparent plate from the photovoltaic cell, the spectral conversion element including a second spectral conversion area extending the first spectral conversion area, the second spectral conversion area being positioned on the peripheral edge of the active face of the photovoltaic cell, so that the part of the active face of the photovoltaic cell directly receiving the incident electromagnetic radiation represents between 40% and 90% of the total surface of the active face of the photovoltaic cell.
    Type: Grant
    Filed: March 12, 2013
    Date of Patent: September 1, 2015
    Inventors: Jérôme Le Perchec, Philippe Voarino
  • Patent number: 9082904
    Abstract: The present invention provides a solar cell module which has high design freedom and can be easily manufactured at low cost. A solar cell module (10) includes (i) a light guide plate (1), (ii) a fluorescence-dispersed film (2) in each of which a fluorescent substance is dispersed and which is adhered to respective at least one surface of the light guide plate (1), and (iii) a solar cell element (3) which is provided on another surface of the light guide plate (1) which another surface being perpendicular to the at least one surface. Therefore, it is not necessary to prepare a light guide plate in which a fluorescent substance is dispersed. Moreover, it is possible to arbitrarily pattern the fluorescence-dispersed film (2) or to stack the fluorescence-dispersed films (2).
    Type: Grant
    Filed: September 6, 2010
    Date of Patent: July 14, 2015
    Assignee: Sharp Kabushiki Kaisha
    Inventor: Tsuyoshi Maeda
  • Patent number: 9082992
    Abstract: A hybrid organic solar cell (HOSC) with perovskite structure as absorption material and a manufacturing method thereof are provided. The HOSC includes a conductive substrate, a hole transport layer, an active layer, a hole blocking layer and a negative electrode. The active layer has a light absorption layer (LAL) and an electron acceptor layer (EAL). The LAL is made of perovskite material represented by the following equation: CnH2n+1NH3XY3, n is positive integer form 1 to 9; X is Pb, Sn or Ge; and Y is at least one of I, Br or Cl. The EAL is made of at least one type of fullerene or derivatives thereof. A planar heterojunction (PHJ) is formed between the LAL and the EAL. The LAL has simple structure and fabricating process with relatively low cost, so that it is advantageous to carry out the mass production of HOSCs of flexible solid-state form.
    Type: Grant
    Filed: July 21, 2013
    Date of Patent: July 14, 2015
    Inventors: Tzung-Fang Guo, Jyun-Yuan Jeng, Yi-Fang Chiang, Mu-Huan Lee, Chao-Yu Chen
  • Patent number: 9054237
    Abstract: Interdigitated back contact (IBC) solar cells are produced by depositing spaced-apart parallel pads of a first dopant bearing material (e.g., boron) on a substrate, heating the substrate to both diffuse the first dopant into corresponding first (e.g., p+) diffusion regions and to form diffusion barriers (e.g., borosilicate glass) over the first diffusion regions, and then disposing the substrate in an atmosphere containing a second dopant (e.g., phosphorus) such that the second dopant diffuses through exposed surface areas of the substrate to form second (e.g., n+) diffusion regions between the first (p+) diffusion regions (the diffusion barriers prevent the second dopant from diffusion into the first (p+) diffusion regions). The substrate material along each interface between adjacent first (p+) and second (n+) diffusion regions is then removed (e.g.
    Type: Grant
    Filed: November 24, 2010
    Date of Patent: June 9, 2015
    Assignee: Palo Alto Research Center Incorporated
    Inventors: Kenta Nakayashiki, Baomin Xu
  • Patent number: 9029907
    Abstract: An optoelectronic semiconductor component includes a radiation emitting semiconductor chip having a radiation coupling out area. Electromagnetic radiation generated in the semiconductor chip leaves the semiconductor chip via the radiation coupling out area. A converter element is disposed downstream of the semiconductor chip at its radiation coupling out area. The converter element is configured to convert electromagnetic radiation emitted by the semiconductor chip. The converter element has a first surface facing away from the radiation coupling out area. A reflective encapsulation encapsulates the semiconductor chip and portions of the converter element at side areas in a form-fitting manner. The first surface of the converter element is free of the reflective encapsulation.
    Type: Grant
    Filed: November 17, 2010
    Date of Patent: May 12, 2015
    Assignee: Osram Opto Semiconductor GmbH
    Inventors: Gertrud Kräuter, Bernd Barchmann, Krister Bergenek, Michael Zitzlsperger, Johann Ramchen
  • Patent number: 9017573
    Abstract: Luminescent compositions are described comprising lanthanide-containing nanoclusters comprising lanthanide atoms bonded to at least one semimetal or transition metal via an oxygen or sulfur atom. Novel compositions include an antenna ligand complexed with the nanoclusters. The rare earth-metal nanoclusters are in the size range of 1 to 100 nm. Articles, such as solar cells, are described in which the nanoclusters (with or without antenna ligands) are dispersed in a polymer matrix. Novel methods of making luminescent films are also described.
    Type: Grant
    Filed: August 19, 2009
    Date of Patent: April 28, 2015
    Assignee: Batlelle Japan Corporation
    Inventors: Steven M. Risser, Vincent McGinniss, David W. Nippa, Paul Edward Burrows, Asanga B. Padmaperuma, Sambhu N. Kundu, Hiroshi Mataki
  • Patent number: 8993869
    Abstract: A photoelectric conversion element includes a photoelectric conversion layer to include a first metal layer, a semiconductor layer, and a second metal layer, all of which are laminated. In addition, at least one of the first metal layer and the second metal layer is a nano-mesh metal having a plurality of through holes or a dot metal having a plurality of metal dots arranged separately from each other on the semiconductor layer. The photoelectric conversion layer includes a long-wavelength absorption layer containing an impurity which is different from impurities for p-type doping and n-type doping of the semiconductor layer. The long-wavelength absorption layer is within a depth of 5 nm from the nano-mesh metal or the dot metal.
    Type: Grant
    Filed: March 16, 2012
    Date of Patent: March 31, 2015
    Assignee: Kabushiki Kaisha Toshiba
    Inventors: Akira Fujimoto, Tsutomu Nakanishi, Kenji Nakamura, Kumi Masunaga, Koji Asakawa
  • Patent number: 8969715
    Abstract: The invention provides a luminescent optical device (10) having an optical waveguide (200). The luminescent optical device (10) further has a photo-luminescent structure (100) on or inside the optical waveguide (200). The photo-luminescent structure (100) comprises a plurality of photo-luminescent domains (110) containing photo-luminescent material (120). The photo-luminescent material (120) is capable of emitting emission light upon excitation by excitation light. The photo-luminescent domains (110) are arranged to emit, upon excitation by excitation light, at least part of the emission light into the optical waveguide layer (200). The luminescent optical device (10) further may comprise a lens structure (300) on the optical waveguide (200).
    Type: Grant
    Filed: July 23, 2010
    Date of Patent: March 3, 2015
    Assignee: Peer+ B.V.
    Inventors: Michael George Debije, Casper Laurens Van Oosten, Cornelis Wilhelmus Maria Bastiaansen, Shufen Tsoi
  • Patent number: 8952239
    Abstract: Described herein are solar modules including spectral concentrators. In one embodiment, a solar module includes a set of photovoltaic cells and a spectral concentrator optically coupled to the set of photovoltaic cells. The spectral concentrator is configured to: (1) collect incident solar radiation; (2) convert the incident solar radiation into substantially monochromatic, emitted radiation; and (3) convey the substantially monochromatic, emitted radiation to the set of photovoltaic cells.
    Type: Grant
    Filed: April 3, 2013
    Date of Patent: February 10, 2015
    Assignee: Omnipv, Inc.
    Inventors: William Matthew Pfenninger, John Midgley, Nemanja Vockic, John Kenney, Jian Jim Wang
  • Patent number: 8937242
    Abstract: The invention provides a solar energy system. A flexible transparent body includes a top surface, a bottom surface and two edges, wherein the top surface is a light receiving surface for receiving light with a first wave-length. A plurality of solar cells is disposed on at least one of the edges of the flexible transparent body, wherein the solar cells can covert light having a second wave-length into electrical energy. A wavelength converting layer is provided for converting light with the first wave-length to light with the second wave-length.
    Type: Grant
    Filed: November 24, 2009
    Date of Patent: January 20, 2015
    Assignee: Industrial Technology Research Institute
    Inventors: Chen-Yang Huang, Sheng-Chieh Tai, Ming-Hsien Wu, Wen-Yih Liao, Chia-Ling Li
  • Patent number: 8933321
    Abstract: Systems and methods are disclosed for automatically or remotely rendering a solar array safe during an emergency or maintenance. A watchdog unit is disclosed for monitoring a signal from a central controller. If the signal is lost, interrupted, or becomes irregular, or if a shutdown signal is received, then the watchdog unit can shutdown one or more solar modules. Shutting down a solar module can mean disconnecting it from a power bus of the solar array or lowering the solar module voltage to a safe level.
    Type: Grant
    Filed: December 1, 2009
    Date of Patent: January 13, 2015
    Assignee: Tigo Energy, Inc.
    Inventors: Ron Hadar, Shmuel Arditi
  • Patent number: 8922972
    Abstract: An integral solar module power conditioning system includes one or more solar module support frames. Each frame includes a plurality of plug-and-play electrical connectors integrated therewith. A microinverter or microinverter connector is also integrated with each frame. Each frame is configured to receive a respective solar electric module and to carry electrical power through a plurality of solar electric modules and corresponding microinverters connected together via a plurality of solar module support frames connected together via the plurality of integrated plug-and-play electrical connectors.
    Type: Grant
    Filed: August 12, 2011
    Date of Patent: December 30, 2014
    Assignee: General Electric Company
    Inventors: Charles Steven Korman, Neil Anthony Johnson, Michael Andrew de Rooij
  • Publication number: 20140352762
    Abstract: A window for a greenhouse is provided that is comprised of a sheet of luminescent material [104] and light-energy converter [103]. The sheet comprises one or more luminescent materials [104] that absorb the peak wavelengths of the sun, emitting the absorbed photons to wavelengths primarily between 600 and 690 nm where they are converted to electrical power and/or enhance plant production. The luminescent material [104] is also transparent to a fraction of the wavelengths in the blue and red-portion of the solar spectrum which are required for plant growth and flowering. An additional polymer layer may be added as a luminescent layer, diffuser and/or IR reflector to further enhance plant growth and electricity generation.
    Type: Application
    Filed: February 1, 2013
    Publication date: December 4, 2014
    Inventors: Sue A. Carter, Glenn B. Alers, Michael E. Loik
  • Publication number: 20140345672
    Abstract: A photovoltaic device using luminescent solar concentrators for converting solar energy into electric energy is described. More generally, a photovoltaic panel has a plurality of photovoltaic devices arranged on its surface.
    Type: Application
    Filed: April 18, 2012
    Publication date: November 27, 2014
    Inventor: Matteo Repetto
  • Publication number: 20140318601
    Abstract: A light guide body includes a light-entering surface which outside light enters, one or more outside light-absorbing optical functional materials that absorb part of the outside light which enters the light-entering surface, a light-guiding optical functional material that is excited by energy of light absorbed by the one or more outside light-absorbing optical functional materials and that emits light different from the light, and a light-emitting surface whose area is smaller than the light-entering surface and from which the light emitted from the light-guiding optical functional material is emitted. A mixing ratio of the light-guiding optical functional material is smaller than a mixing ratio of at least an optical functional material having a largest mixing ratio among the one or more outside light-absorbing optical functional materials.
    Type: Application
    Filed: November 20, 2012
    Publication date: October 30, 2014
    Inventors: Hideki Uchida, Tokiyoshi Umeda, Hideomi Yui
  • Patent number: 8866001
    Abstract: A stacked luminescent solar concentrator includes two separate absorption/emission cells, each having a layer of luminophore-type material, wherein a top layer is a high band gap layer comprised of quantum dots in polymer, wherein the quantum dots are engineered so as to absorb a significant percentage of photons above bandgap. The bottom layer is a lower band gap layer comprised of quantum dots in polymer, wherein the quantum dots in the second layer are engineered so as to absorb photons not absorbed in the top layer, thus increasing total percentage of absorbed photons. Photovoltaic cells are located below the layers at the bottom of the cells or at the edges of the cells. The sides and lower surfaces of the cells may include reflective surfaces as discussed further herein. Reflection losses from the top surface thereof may be minimized using a broadband anti-reflective coating (AR) on the surface.
    Type: Grant
    Filed: May 10, 2012
    Date of Patent: October 21, 2014
    Assignee: Leidos, Inc.
    Inventors: John Paul Ziegler, Howard Walter Walker, Richard Holmes Griffey, Newell Convers Wyeth
  • Patent number: 8859883
    Abstract: A photovoltaic power generation system includes a plurality of power generation panels and a power conditioner. The power generation panels and a radiation source are placed in a solar cell storage room buried typically in the ground. The radiation source includes radioactive waste generated in reprocessing of spent nuclear fuel. Each power generation panel has a phosphor member and a moderator member, which are disposed in that order on solar cells placed on a board. Radiation (for example, a gamma ray) emitted from the radiation source is injected on the power generation panel and is moderated by the moderator member. When the gamma ray with the reduced energy (below 100 keV) is injected on the phosphor member, it emits visible light. When the visible light is injected on the solar cells, electric power is generated.
    Type: Grant
    Filed: February 24, 2011
    Date of Patent: October 14, 2014
    Assignee: Hitachi, Ltd.
    Inventors: Yasuhiro Shinkai, Makio Uchida, Ayako Kumasaka, Jun'ichi Hirota
  • Publication number: 20140283896
    Abstract: A transparent luminescent solar concentrator is provided. The transparent luminescent solar concentrator has luminophores embedded within a waveguide matrix that both selectively absorb and emit near-infrared light to an edge mounted or embedded solar photovoltaic array.
    Type: Application
    Filed: March 20, 2014
    Publication date: September 25, 2014
    Applicant: Board of Trustees of Michigan State University
    Inventors: Richard R. LUNT, III, Yimu ZHAO
  • Patent number: 8841548
    Abstract: An optical system and method to overcome luminescent solar concentrator inefficiencies by resonance-shifting, in which sharply directed emission from a bi-layer cavity into a glass substrate returns to interact with the cavity off-resonance at each subsequent reflection, significantly reducing reabsorption loss en route to the edges. In one embodiment, the system comprises a luminescent solar concentrator comprising a transparent substrate, a luminescent film having a variable thickness; and a low refractive index layer disposed between the transparent substrate and the luminescent film.
    Type: Grant
    Filed: August 26, 2011
    Date of Patent: September 23, 2014
    Assignee: Uchicago Argonne, LLC
    Inventors: Noel Christopher Giebink, Gary P. Wiederrecht, Michael R. Wasielewski
  • Patent number: 8829330
    Abstract: In an example, a solar energy system includes multiple PV modules, multiple reflectors, and a racking assembly. Each of the reflectors is positioned opposite a corresponding one of the PV modules. The racking assembly mechanically interconnects the PV modules and the reflectors to form an interconnected system. The racking assembly defines gaps within the racking assembly and between adjacent PV modules and reflectors. The interconnected system includes multiple contact points associated with the gaps. The gaps and contact points configure the interconnected system to accommodate surface unevenness of an installation surface up to a predetermined surface unevenness.
    Type: Grant
    Filed: August 10, 2011
    Date of Patent: September 9, 2014
    Assignee: Tenksolar, Inc.
    Inventors: Dallas W. Meyer, Lowell J. Berg, Lance E. Stover, Orville D. Dodd, Thomas L. Murnan
  • Patent number: 8829340
    Abstract: A solar light-control module includes a light-propagation chamber, a plurality of micro structures, a refractive media, and at least one solar cell. The light-propagation chamber has a first face, a second face and at least one side surface. Ambient light is incident to the first face to enter the solar light-control module. The micro structures are disposed on the second face to deflect the ambient light and guide the ambient light to a predetermined area of the light-propagation chamber. The refractive media is disposed between the second face of the light-propagation chamber and the micro structures, and the solar cell is disposed on the predetermined area.
    Type: Grant
    Filed: December 7, 2010
    Date of Patent: September 9, 2014
    Assignees: Wintek Technology(H.K) Ltd., Wintek Corporation
    Inventors: Wen-Chun Wang, Zhi-Ting Ye, Chun-Chia Liu
  • Publication number: 20140230884
    Abstract: Disclosed herein is a system for stimulating an emission from at least one emitter, such as a quantum dot or organic molecule, on the surface of a photonic crystal comprising a patterned dielectric substrate. Embodiments of this system include a laser or other source that illuminates the emitter and the photonic crystal, which is characterized by an energy band structure exhibiting a Fano resonance, from a first angle so as to stimulate the emission from the emitter at a second angle. The coupling between the photonic crystal and the emitter may result in spectral and angular enhancement of the emission through excitation and extraction enhancement. These enhancement mechanisms also reduce the emitter's lasing threshold. For instance, these enhancement mechanisms enable lasing of a 100 nm thick layer of diluted organic molecules solution with reduced threshold intensity. This reduction in lasing threshold enables more efficient organic light emitting devices and more sensitive molecular sensing.
    Type: Application
    Filed: February 15, 2013
    Publication date: August 21, 2014
    Applicant: Massachusetts Institute of Technology
    Inventor: Massachusetts Institute of Technology
  • Publication number: 20140196763
    Abstract: In order to provide a novel CaS:Eu series red phosphor in which moisture-resistance has been improved, a red phosphor is proposed, containing Ba at 0.001 to 1.00 mol % with respect to CaS in a red phosphor represented by the general formula: CaS:Eu.
    Type: Application
    Filed: August 7, 2012
    Publication date: July 17, 2014
    Inventors: Asuka Sasakura, Jun-ichi Itoh, Masaaki Inamura, Akinori Kumagai, Haruka Shimizu
  • Publication number: 20140150847
    Abstract: A solar cell module and a method of fabricating the same are provided. The method includes providing a solution having a luminescent dye, mixing the solution with a first waveguide material to obtain a first mixture, and placing the first mixture and a second mixture having nano-powder and a second waveguide material into a mold to form a waveguide body having a first layer body and a second layer body stacked on the first layer body. The waveguide body has a top surface, a bottom surface opposing to the top surface, and a lateral surface connecting the top surface with the bottom surface. At least one solar cell is disposed in the mold and embedded in the waveguide body, to enlarge a light reception area and light collection.
    Type: Application
    Filed: February 1, 2013
    Publication date: June 5, 2014
    Applicant: National Chiao Tung University
    Inventors: Fang-Chung Chen, Chun-Hsien Chou, Jui-Kang Chuang, Yen-Tseng Lin
  • Patent number: 8674281
    Abstract: A solar energy harvesting system including a luminescent solar concentrator for generating light emissions in response to received sunlight, and for redirecting and concentrating the light emissions onto a predetermined target (e.g., a PV cell). The luminescent solar concentrator includes a light-guiding slab containing a luminescent material that generates the light emissions, spaced-apart outcoupling structures that provide a distributed outcoupling of the light emissions through predetermined locations on one of the “broadside” (e.g., upper or lower) surfaces of the light-guiding slab, and optical elements positioned to redirect the outcoupled light emissions such that the light emissions are concentrated onto the predetermined target.
    Type: Grant
    Filed: August 9, 2010
    Date of Patent: March 18, 2014
    Assignee: Palo Alto Research Center Incorporated
    Inventors: Philipp H. Schmaelzle, Robert A. Street
  • Patent number: 8637763
    Abstract: A solar cell with engineered spectral conversion elements or components includes a single crystal silicon solar cell having a back surface. At least one spectral conversion element is formed on the back surface. The conversion element includes single crystal rare earth oxide, and the single crystal rare earth oxide is crystal lattice matched to the back surface of the silicon solar cell. Material including silicon is formed on the back surface in a surrounding and embedding relationship to the at least one spectral conversion element. A back reflector is positioned on the material formed on the back surface so as to reflect light passing through the silicon formed on the back surface.
    Type: Grant
    Filed: May 26, 2010
    Date of Patent: January 28, 2014
    Assignee: Translucent, Inc.
    Inventors: Michael Lebby, Andrew Clark
  • Publication number: 20140007921
    Abstract: A wavelength conversion element includes at least one wavelength conversion layer. The wavelength conversion layer has a matrix layer and particles that is disposed in the matrix layer. The matrix layer is formed of a curable resin material or an inorganic material with a bandgap of 3 eV or more. The particles are formed of a wavelength conversion composition for wavelength-converting absorbed light in a specific wavelength range into light having energy lower than energy of the absorbed light, and that have a particle diameter of 3 nm to 20 nm. An interval between neighboring particles is equal to or less than the particle diameter of the particles. Consequently, the wavelength conversion layer prevents reflection of light in a wavelength range other than the specific wavelength range.
    Type: Application
    Filed: September 11, 2013
    Publication date: January 9, 2014
    Applicant: FUJIFILM Corporation
    Inventor: Teruhiko KURAMACHI
  • Publication number: 20130340808
    Abstract: In order to enhance the power generation efficiency of a solar battery, the solar battery is formed to have a configuration in which a sealing material sheet formed of a sealing material having a wavelength conversion material mixed therein and having a thickness (c) is disposed between a front glass having an antireflection film and a solar battery cell; the wavelength conversion material is a needle fluorescent substance capable of converting short-wavelength light to long-wavelength light; and when a long diameter and a short diameter of the needle fluorescent substance are defined as “a” and “b”, respectively, there are relations of “a>b” and “a>c”. According to this, more outgoing light from the fluorescent substance can be directed toward the side of the solar battery cell, so that the power generation efficiency can be enhanced.
    Type: Application
    Filed: December 8, 2011
    Publication date: December 26, 2013
    Inventors: Masaaki Komatsu, Choichiro Okazaki, Shin Imamura
  • Publication number: 20130233372
    Abstract: A solar cell module includes a plurality of electric power generation units. Each of the plurality of electric power generation units includes a solar cell element and a light guide unit having a first surface and a second surface positioned opposite to the first surface and configured to guide light toward the solar cell element between the first surface and the second surface.
    Type: Application
    Filed: November 7, 2011
    Publication date: September 12, 2013
    Inventor: Kyohko Azumada
  • Patent number: 8519325
    Abstract: The present invention provides a spectrally selective planar optical radiation concentrator, in which different spectral components of solar energy can be collected for different applications such as heat, illumination and electricity. The optical radiation concentrator has two basic components, an angle selective optical filter and a light redistribution reflector for collecting, trapping and concentrating radiant energy. It further comprises a light deflecting component and a fluorescent wavelength shifter to improve acceptance angle and concentration efficiency respectively. The planar optical radiation concentrator exhibits the potential for light weight, high concentration ratio and efficiency, and the ability for passive tracking.
    Type: Grant
    Filed: August 24, 2009
    Date of Patent: August 27, 2013
    Inventors: Zhenyu Lu, Jingfeng Yuan
  • Patent number: 8513095
    Abstract: A method for manufacturing solar strips. The method includes providing a photovoltaic material including a back side region, a front side surface, and a plurality of photovoltaic strip regions separated by a plurality of scribe regions. A first portion of the photovoltaic material is supported while a second portion of the photovoltaic material including at least one of the photovoltaic strips is left unsupported. The method includes applying a predetermined force along a portion of the photovoltaic strip that remains unsupported to cause the photovoltaic strip to be separated from the supported photovoltaic material.
    Type: Grant
    Filed: August 28, 2008
    Date of Patent: August 20, 2013
    Assignee: Solaria Corporation
    Inventors: Alelie Funcell, Rick Briere, Douglas R. Battaglia, Jr.