Abstract: An arrangement includes a solar cell and a covering, wherein the covering covers the solar cell, at least on the side that is intended to be exposed to electromagnetic radiation of the sun. The covering has an electrochromic layer. The arrangement also has a control unit for controlling the electrochromic layer. The control unit is designed to control the transmittance of the electrochromic layer for electromagnetic radiation in a defined wavelength range by applying an electrical voltage to the electrochromic layer.

Abstract: A solar cell, and methods of fabricating said solar cell, are disclosed. The solar cell can include a first emitter region over a substrate, the first emitter region having a perimeter around a portion of the substrate. A first conductive contact is electrically coupled to the first emitter region at a location outside of the perimeter of the first emitter region.

Abstract: A water producing system for a photovoltaic panel may include a moisture collection layer, a liquid transfer mat, and a moisture collection substrate. The moisture collection layer may collect moisture from condensation and direct moisture away from the photovoltaic panel. The liquid transfer mat may include a plurality of tubes through which a chilled heat transfer liquid passes. The moisture collection substrate may include a thermally conductive material. The chilled heat transfer liquid within the liquid transfer mat may absorb heat from the photovoltaic panel and from ambient air through the moisture collection substrate, thereby reducing a temperature of the photovoltaic panel and condensing water on the moisture collection substrate to produce water.

Abstract: A waste heat recovery system for a photovoltaic panel may include an open loop system and a closed loop system. The open loop system includes an electric insulator layer and a moisture collection layer. The moisture collection layer may collect moisture from condensation and to direct moisture away from the photovoltaic panel. The closed loop system may be positioned adjacent to the open loop system. The closed loop system may include a liquid transfer mat that has a plurality of tubes through which a liquid passes to absorb heat from the photovoltaic panel. The open loop system is configured to encourage heat transfer from the photovoltaic panel to the closed loop system.

Abstract: A photovoltaic device includes one or more features that taken alone or in combination enhance its efficiency. Some embodiments may comprise a tandem solar device in which a top PV cell is fabricated upon a front transparent substrate, that also serves as the top encapsulating substance. The top PV cell including the front encapsulating substance is then bonded (e.g., using adhesive) to a bottom PV cell in order to complete the tandem device. Using the same transparent, insulating element as both front encapsulating substance and a substrate for fabricating the top PV cell, obviates to the need to provide a separate structure (with resulting interfaces) to perform the latter role. For tandem and non-tandem PV devices, a Through-Substrate-Via (TSV) structure may extend through an insulating substrate in order to provide contact with an opposite side (e.g., back electrode). Embodiments may find particular use in fabricating shingled perovskite photovoltaic solar cells.

Abstract: A method for electrically conductively contacting an optoelectronic component having at least one protective layer, including: providing the optoelectronic component having the at least one protective layer with at least one busbar arranged below the at least one protective layer, forming at least one opening by at least one laser beam in the at least one protective layer, wherein at least one busbar arranged below the at least one protective layer is partly exposed, such that the at least one busbar is not damaged, introducing a low-melting solder into the at least one opening of the at least one protective layer, aligning and fixing an electrically conductive element that is flexible on a side of the at least one opening opposite the at least one busbar, and forming an electrically conductive connection element in the at least one opening.

Abstract: Solar trackers that may be advantageously employed on sloped and/or variable terrain to rotate solar panels to track motion of the sun across the sky include bearing assemblies configured to address mechanical challenges posed by the sloped and/or variable terrain that might otherwise prevent or complicate use of solar trackers on such terrain.

Abstract: A wireless self-charging power pack including a solution processed conductive thin film integrating a solar cell with a solid-state supercapacitor. Additionally, a method of forming a wireless self-charging power pack including integrating a solar cell with a solid-state supercapacitor by forming a layer of conductive thin film between the solar cell and the solid-state supercapacitor through solution processing of the material forming the conductive thin film.

Abstract: Aligned metallization approaches for fabricating solar cells, and the resulting solar cells, are described. In an example, a solar cell includes a semiconductor layer over a semiconductor substrate. A first plurality of discrete openings is in the semiconductor layer and exposes corresponding discrete portions of the semiconductor substrate. A plurality of doped regions is in the semiconductor substrate and corresponds to the first plurality of discrete openings. An insulating layer is over the semiconductor layer and is in the first plurality of discrete openings. A second plurality of discrete openings is in the insulating layer and exposes corresponding portions of the plurality of doped regions. Each one of the second plurality of discrete openings is entirely within a perimeter of a corresponding one of the first plurality of discrete openings. A plurality of conductive contacts is in the second plurality of discrete openings and is on the plurality of doped regions.

Abstract: A solar cell is provided, including: a semiconductor substrate including a front surface and a rear surface arranged opposite to each other; an emitter located on the front surface of the semiconductor substrate; a front passivation layer located over the front surface of the semiconductor substrate; a tunneling layer located over the rear surface of the semiconductor substrate; a doped conductive layer located over a surface of the tunneling layer; a rear passivation layer located over a surface of the doped conductive layer; a front electrode in contact with the emitter; and a rear electrode in contact with the first doped conductive layer. The doped conductive layer includes a first doped conductive layer corresponding to a rear metallized region, and a second doped conductive layer corresponding to a rear non-metallized region. The first doped conductive layer has an oxygen content less than the second doped conductive layer.

Abstract: Perovskites have high density of vacancies which absorb oxygen molecules and upon illumination, transform them into superoxide species which react with perovskites to decompose them, preventing use of these materials in many photo-applications. The present disclosure provides ways for improving the stability of perovskites in air ambient by doping perovskites with metals such as lead, cadmium, zinc, manganese, iron, cobalt, nickel, copper and tin which decreases the density of vacancies in perovskites and significantly increases the lifetime of perovskites. Perovskite solar cells containing inorganic and organic ions such as Cs+, formamidinium and methylammonium cations, Pb2+, Br— and I— with these metal dopants exhibit stable efficiency within a month of storage in air ambient with the relative humidity of 50%.

Abstract: The present disclosure relates to a device that includes a perovskite layer; and a first layer that includes a molecule having a structure according to formula (I) Wherein the perovskite layer and the first layer are in physical contact, n is between 1 and 10, inclusively, R1 includes at least one of hydrogen, a first alkyl group, a first alkoxy group, and/or a first halogen, R2 includes at least one of hydrogen, a second alkyl group, a second alkoxy group, and/or a second halogen, R1 is bonded to aromatic ring (A) at carbon atom (1), carbon atom (2), carbon atom (3), or carbon atom (4), R2 is bonded to aromatic ring (B) at carbon atom (5), carbon atom (6), carbon atom (7), or carbon atom (8), and R1 and R2 are the same or different.

Abstract: A photovoltaic cell is provided, including: a substrate; a tunneling layer, a field passivation layer and a first passivation film that are sequentially disposed on a rear surface of the substrate; and a first electrode. The first electrode penetrates the first passivation film and is in contact with the field passivation layer. A doping concentration of the first doping element in the tunneling layer is less than a doping concentration of the first doping element in the field passivation layer, and the doping concentration of the first doping element in the tunneling layer is greater than a doping concentration of the first doping element in the substrate. The field passivation layer includes a first doped region and a second doped region, and a doping curve slope of the first doped region is greater than a doping curve slope of the second doped region.

Abstract: Provided herein are various enhancements for solar arrays and photovoltaic systems for spacecraft, vehicles, and other applications. In one example, an assembly includes a base layer having a generally circular shape and comprising a plurality of gores interspersed by radial folds. The assembly includes a photovoltaic array coupled to the gores, and a tensioning element configured to apply circumferential tension about a central node of the base layer. The assembly includes a structural element disposed about an outer perimeter of the base layer against which the circumferential tension is conveyed for deployment of the base layer from a stowed configuration into a deployed configuration.

Abstract: A solar array wing includes an extension mast to be extended from a wound state, and a support member, around which the extension mast is wound, to support the extension mast after the extension mast is extended. The support member is made of a fiber reinforced composite material. A coefficient of linear expansion of the fiber reinforced composite material, a unit of which is for each degree Celsius, in a direction that is orthogonal to an extension direction of the extension mast, is higher than or equal to ?1×10?6 and lower than or equal to 1×10?6.

Abstract: A heat dissipation composite for a display device includes: a heat absorber; an electricity generator disposed on the heat absorber to convert heat from the heat absorber into electricity; and a vibrator disposed on the electricity generator to convert the electricity provided from the electricity generator into vibration.

Abstract: A solar cell includes a first electrode, a second electrode, a photoelectric conversion layer interposed between the first and second electrodes, and a hole transport layer interposed between the first electrode and the photoelectric conversion layer. At least one electrode selected from the group consisting of the first and second electrodes is transparent to light. The photoelectric conversion layer includes a perovskite compound constituted by a monovalent cation, a divalent cation, and a halogen anion. The monovalent cation includes at least one selected from the group consisting of a formamidinium cation and a methylammonium cation. The divalent cation includes a Sn cation. The halogen anion includes an iodide ion. The hole transport layer includes 4,4?,4?-tris[9,9-dimethyl-2-fluorenyl(4-methoxy-phenyl)amino]triphenylamine.

Abstract: The solar cell includes a substrate having a central region and two peripheral regions. The solar cell further includes multiple finger electrodes arranged at intervals along the first direction, and the multiple finger electrodes include multiple first finger electrodes and multiple second finger electrodes. Each of the multiple first finger electrodes includes first body portions and first widened portions arranged alternatingly along the second direction, each of the multiple second finger electrodes includes second body portions and second widened portions arranged alternatingly along the second direction, and the first widened portions are arranged and aligned to the second widened portions. A respective first widened portion of a respective first finger electrode in two first finger electrodes farthest from the central region on the substrate has a larger orthographic projection than a respective first widened portion of each of two first finger electrodes closest to the central region.

Abstract: A thermal management device for a photovoltaic panel includes a phase change material layer attached to a back side of the photovoltaic panel. The thermal management device includes a Seebeck thermoelectric generator having a first surface attached to the phase change material layer. The thermal management further device includes a heat sink attached to a second surface of the Seebeck thermoelectric generator. The heat sink is configured with a sinuous coil, a water inlet port and a water outlet port connected to the sinuous coil, and a plurality of heat fins. The thermal management further device includes a casing box configured to enclose its various components, and a glass cover attached to the casing box and configured to cover a top surface of the photovoltaic panel.

Abstract: A thermal management device for a photovoltaic panel includes a phase change material layer attached to a back side of the photovoltaic panel. The thermal management device includes a Seebeck thermoelectric generator having a first surface attached to the phase change material layer. The thermal management further device includes a heat sink attached to a second surface of the Seebeck thermoelectric generator. The heat sink is configured with a sinuous coil, a water inlet port and a water outlet port connected to the sinuous coil, and a plurality of heat fins. The thermal management further device includes a casing box configured to enclose its various components, and a glass cover attached to the casing box and configured to cover a top surface of the photovoltaic panel.