Abstract: A polymer solar cell includes a photoactive layer, a cathode electrode, and an anode electrode. The photoactive layer includes a polymer layer and a carbon nanotube layer. The polymer layer includes a first polymer surface and a second polymer surface opposite to the first polymer surface. A portion of the carbon nanotube layer is embedded in the polymer layer, and another portion of the carbon nanotube layer is exposed from the polymer layer. The cathode electrode is located a surface of the carbon nanotube layer away from the polymer layer. The anode electrode is located on the first polymer surface and spaced apart from the carbon nanotube layer. The entire second polymer surface is exposed.

Abstract: Disclosed is a thermoelectric device in which a separate interlayer is inserted between a thermoelectric leg and an electrode to reduce the contact resistance between the thermoelectric leg and the electrode, so that the interlayer serves as a tunneling path between the thermoelectric leg and the electrode, facilitating the charge movements between the two materials. The thermoelectric device according to an embodiment includes a substrate; at least one thermoelectric leg positioned on the substrate; an interlayer positioned on each thermoelectric leg of the at least one thermoelectric leg and including a plurality of interlayer materials that are chemically bonded with a respective thermoelectric leg; and an electrode positioned on each interlayer and electrically connected to the respective thermoelectric leg, wherein the plurality of interlayer materials of each respective interlayer is arranged in a shape of a brush.

Abstract: In this photoelectric conversion element wherein group III-IV compound semiconductor single crystals containing zinc as an impurity are used as a substrate, the substrate is increased in size without lowering conversion efficiency. A heat-resistant crucible is filled with raw material and a sealant, and the raw material and sealant are heated, thereby melting the raw material into a melt, softening the encapsulant, and covering the melt from the top with the encapsulant. The temperature inside the crucible is controlled such that the temperature of the top of the encapsulant relative to the bottom of the encapsulant becomes higher in a range that not equal or exceed the temperature of bottom of the encapsulant, and seed crystal is dipped in the melt and pulled upward with respect to the melt, thereby growing single crystals from the seed crystal.

Abstract: A thin film solar cell including a substrate, an insulating layer, a first electrode layer, a photovoltaic conversion layer and a second electrode layer is provided. The insulating layer is disposed on the substrate and includes a plurality of microstructures. An orthographic projection of the plurality of microstructures is a regular geometric shape or an irregular geometric shape regarding to a normal direction of the substrate. The first electrode layer is disposed on the insulating layer. A thickness of the first electrode layer is less than 1 ?m or is equal to 1 ?m. The photovoltaic conversion layer is disposed on the first electrode layer. The second electrode layer is disposed on the photovoltaic conversion layer.

Abstract: Compounds of formula (I) and their use in electronic devices, especially electroluminescent devices: (I) wherein at least two of the substituents R1 and R2, R2 and R3, R3 and R4, R5 and R6, R6 and R7, or R7 and R8 form together one of the following ring systems (IIa), (IIb) (IIc). When used as charge transport material, charge blocker material and/or host material in electroluminescent devices, the compounds of formula (I) may provide improved efficiency, stability, manufacturability, or spectral characteristics of electroluminescent devices and reduced driving voltage of electroluminescent devices.

Abstract: A perovskite solar cell adopts a compound having a specific central backbone having a carbazolylamino group as a substituent, and more particularly, to the perovskite solar cell adopts a compound, as a hole transport material, having a specific central backbone having a carbazolylamino group as a substituent, and a spirobifluorene compound having a carbazolylphenylamino group. The perovskite solar cell has very excellent high-temperature stability while having a high power generation efficiency.

Abstract: In some aspects, graphic layers for depicting a visible representation of an image along a surface of a photovoltaic module can include a plurality of substantially opaque isolated regions; and at least one substantially transparent contiguous region surrounding the substantially opaque isolated regions, wherein an outer surface of the at least one substantially transparent contiguous region comprises a matte surface finish.

Abstract: A photovoltaic horizontal beehive system provides a horizontal beehive. The brooder box has sidewalls and a floor wall that form an interior cavity. The cavity is segregated into independent compartments through a central fixed divider, and multiple removable dividers that segregate the brooder box into a queen bee colony and a honey bee colony. The removable dividers are manipulated in the cavity to adjust the size of each compartment to accommodate population changes in the bee colonies. A lid regulates access to the interior cavity. A solar panel operates on outer surface of lid. The solar panel harnesses sunlight to generate electricity used internally and externally of the brooder box. An electrical compartment in brooder box retains electrical components, like a battery, an inverter, and a charge controller. The solar-generated electricity is used internally for operation of an internal beehive apparatus, and carried distally to operate an external electrical apparatus.

Abstract: A thermoelectric device is disclosed. The thermoelectric device comprises: a body part comprising a hollow in which a semiconductor device is disposed; a plurality of connecting parts protruding on the lateral sides of the body part and comprising connecting holes; and a plurality of electrode parts connected to the semiconductor device and extending to the connecting holes of the connecting parts.

Abstract: An apparatus including a photovoltaic panel; a first fluid container thermally attached to a bottom of the photovoltaic panel; and a temperature sensor for sensing temperature of a fluid inside the first fluid container is part of a sub-system for a power generation system using solar energy. The sub-system further includes a heating assembly, including a second fluid container, a second temperature sensor, and an electrical heating element. The second fluid container is fluidically connected to the first fluid container. The heating element is configured to heat the pre-heated fluid in the second fluid container to its vapor state. The sub-system additionally includes a turbine generator fluidically connected to the second fluid container to generate AC power from the vapor. A system employing a plurality of sub-systems and a method for using the sub-systems are also provided.

Abstract: The use of photovoltaic (PV) cells to convert solar energy to electricity is becoming increasingly prevalent; however, there are still significant limitations associated with the widespread adoption of PV cells for electricity needs. There is a clear need for a high efficiency solar power system that supplies electricity at a competitive cost and that provides for an on-demand supply of electricity as well as energy storage. By combining aspects of concentrated solar power and concentrated photovoltaics, the present invention provides a device that enables the conversion of sunlight to electricity at very high efficiencies and that enables the transmission of thermal energy to heat storage devices for later use. The disclosed device enables transmissive CPV through the use of a multijunction PV cell mounted on a transparent base. The use of a multijunction cell allows for highly efficient absorption of light above the bandgap of the lowest bandgap subcell.

Abstract: An organic light emitting display device is provided. The organic light emitting display device includes at least two or more light emitting parts between an anode and a cathode and each having a light emitting layer. At least one of the at least two or more light emitting parts includes an organic layer. The organic layer is formed of a compound comprising a functional group that reacts with alkali metals or alkali earth metals and a functional group with electron transport properties.

Abstract: The present invention provides a polymer, a method for preparing the same, and a solar cell comprising the polymer having a structure represented by Formula I, the polymer has excellent interface-modified property, water resistance and/or excellent electron-transporting property, and thus can be effectively used to prepare solar cells. The polymer not only can significantly improve the hydrophobic property of the thin film surface of the solar cell, thereby protecting the intermediate active layer of the cell from moisture in the air so as to improve the lifetime of the cell device, but also can be used for large-area processing to prepare a flexible cell device.

Abstract: Disclosed are a fullerene derivative including a substituent represented by Chemical Formula 1, and a photoelectric device, an image sensor, and an electronic device including the fullerene derivative. In Chemical Formula 1, X, Ar, and R1 to R3 are the same as defined in the detailed description.

Abstract: The present disclosure relates to a novel compound, and an organic electroluminescent device including the same, and by using the compound according to the present disclosure in an organic material layer, preferably a light emitting layer or an auxiliary light emitting layer, of an organic electroluminescent device, light emission efficiency, a driving voltage, a lifetime and the like of the organic electroluminescent device may be enhanced.

Abstract: A metal junction thermoelectric device includes at least one thermoelectric element. The thermoelectric element has first and second opposite sides, and a first conductor made from a first metal, and a second conductor made from a second metal. The first and second conductors are electrically interconnected in series, and the first and second conductors are arranged to conduct heat in parallel between the first and second sides. The first metal has a first occupancy state, and the second metal has a second occupancy state that is lower than the first occupancy state. A temperature difference between the first and second sides of the thermoelectric element causes a charge potential due to the difference in occupancy states of the first and second metals. The charge potential generates electrical power.

Abstract: Provided is a solar cell including, on a first main surface of a semiconductor substrate having a first conductivity type, a base layer which has the first conductivity type, and an emitter layer which is adjacent to the base layer and has a second conductivity type which is a conductivity type opposite to the first conductivity type, and further including a base collecting electrode provided on at least the base layer, and a part of the base collecting electrode is also arranged on the emitter layer adjacent to the base layer on which the base collecting electrode is arranged. Consequently, the inexpensive solar cell having high photoelectric conversion efficiency can be provided.

Abstract: An organic light-emitting device including: a first electrode, a hole transport region including a first hole transport layer (HTL), an emission layer, an electron transport region; and a second electrode; wherein the first HTL includes a first compound and a second compound, the emission layer includes a third compound and a fourth compound, the electron affinity of the second compound is greater than the electron affinity of the first compound, a lowest unoccupied molecular orbital (LUMO) energy level of the fourth compound is greater than a LUMO energy level of the third compound, the second compound and the third compound are different from each other, and the minimum anionic dissociation energy of the second compound is greater than the triplet energy of the third compound.

Abstract: A solar power generation unit includes at least one optical fiber including a light output region including a light output window and a light guide region guiding a light wave to the light output region; a housing of a tube type, the housing having an inner space in which the at least one optical fiber is located; and a power generation part including a solar panel provided at least at a side of the inner space of the housing and configured to generate power in response to the light wave incident thereon from the light output region of the at least one optical fiber.

Abstract: The invention provides an optoelectronic device comprising a mixed-anion perovskite, wherein the mixed-anion perovskite comprises two or more different anions selected from halide anions and chalcogenide anions. The invention further provides a mixed halide perovskite of the formula (I) [A][B][X]3 wherein: [A] is at least one organic cation; [B] is at least one divalent metal cation; and [X] is said two or more different halide anions. In another aspect, the invention provides the use of a mixed-anion perovskite as a sensitizer in an optoelectronic device, wherein the mixed-anion perovskite comprises two or more different anions selected from halide anions and chalcogenide anions. The invention also provides a photosensitizing material for an optoelectronic device comprising a mixed-anion perovskite wherein the mixed-anion perovskite comprises two or more different anions selected from halide anions and chalcogenide anions.