42results about How to "Improve solar conversion efficiency" patented technology

Light-emitting quantum dot films, quantum dot lighting devices, and quantum dot-based backlight units are provided. Related compositions, components, and methods are also described. Improved quantum dot encapsulation and matrix materials are provided. Quantum dot films with protective barriers are described. High-efficiency, high brightness, and high-color purity quantum dot-based lighting devices are also included, as well as methods for improving efficiency and optical characteristics in quantum dot-based lighting devices.

Light-emitting quantum dot films, quantum dot lighting devices, and quantum dot-based backlight units are provided. Related compositions, components, and methods are also described. Improved quantum dot encapsulation and matrix materials are provided. Quantum dot films with protective barriers are described. High-efficiency, high brightness, and high-color purity quantum dot-based lighting devices are also included, as well as methods for improving efficiency and optical characteristics in quantum dot-based lighting devices.

The present invention relates to a polymer electrolyte for dye-sensitized solar cells and a fabrication method of dye-sensitized solar cells using the polymer electrolyte. More specifically, the present invention relates to an excellent polymer electrolyte for dye-sensitized solar cells, which is not only capable of virtually preventing a leakage, the worst disadvantage of dye-sensitized solar cells using a conventional liquid electrolyte, but exhibiting a light conversion efficiency relatively higher than those of the conventional polymer electrolytes and being applicable to fabrication processes of large area dye-sensitized solar cells or flexible dye-sensitized solar cells; and a fabrication method of dye-sensitized solar cells using such a polymer electrolyte. To this end, the polymer electrolyte for dye-sensitized solar cells according to the present invention comprises a thermosetting epoxy resin, an imidazole-based curing accelerator and a metallic salt. The fabrication method of dye-sensitized solar cells according to the present invention makes use of said polymer electrolyte for dye-sensitized solar cells as an adhesive between a working electrode and a counterelectrode thereof, while maintaining the final junction state in the solid phase.

The invention discloses a solar wafer, which comprises an N-type substrate, a P-type mingling layer arranged on the surface of the N-type substrate, an N+-type mingling layer arranged on the back face of the N-type substrate, a first passivation layer arranged on the surface of the P-type mingling layer, a second passivation layer arranged on the surface of the first passivation layer, surface electrodes arranged on the second passivation layer and back face electrodes arranged on the N+-type mingling layer. The P-type mingling layer is formed by conducting annealing treatment on P-type ions injected in ion injection mode, annealing temperature is higher than 900 DEG C, and annealing time is more than 30 seconds. A preparation method of the solar wafer is further disclosed. The ion injection method is adopted to prepare the solar wafer so that dose, mingling depth and uniformity of mingled ions can be effectively and accurately controlled. Ideal square resistors can be obtained, and actually obtained solar conversion efficiency of products is higher and closer to laboratorial theoretical design value.

The present invention provides a mounting unit for solar panels that simplifies the complexity of storage, transit and in-field installation of solar electric generation systems. According to one embodiment, the mounting unit comprises a top panel, a bottom panel and a pair of panel guides, each formed integral with and adjacent to an opposing side of the top panel. Each panel guide includes a horizontal portion for supporting a solar panel and a vertical portion for providing an air channel between a bottom surface of the solar panel and an upper surface of the top panel. The air channel enables natural convection to cool the solar panel and optionally a power conversion device used within the system, thereby improving the solar conversion efficiency of the system. An improved method for installing a solar electric generation system is also provided herein.

The invention discloses a prolonged double-plane mirror reflection photovoltaic intelligent condensation system and belongs to the technical field of solar application. The prolonged double-plane mirror reflection photovoltaic intelligent condensation system comprises a condensation battery panel component bracket, a battery panel component, two plane mirrors symmetrically arranged to the battery panel component in 120 degrees, an upper mirror stand and a lower mirror stand respectively fixed with the plane mirrors, a triangular floor stand, and a plurality of flange rollers. The length of each of the two plane mirrors is larger than that of the battery panel component. Through regulating automatically or manually, when the battery panel component is arrayed in the east-west direction, the battery panel component always faces to the sun at the high noon of each day, and when the battery panel component is arrayed in the south-north direction, the battery panel component completely tracks the sun from the east to west at each day. The prolonged double-plane mirror reflection photovoltaic intelligent condensation system has features that the manufacturing technique is simple, the cost is low, the solar energy utilization efficiency is improved in all time, and the photovoltaic power generation capacity is obviously improved.

The invention discloses an indium tin oxide nanowire array composite, a method for preparing the indium tin oxide nanowire array composite and the application of the indium tin oxide nanowire array composite in a solar cell. The indium tin oxide nanowire array composite comprises an indium tin oxide nanowire array which is generated on a conducting substrate, and cuprous sulfide nano-particles are wrapped on the indium tin oxide nanowire array. The method for preparing the indium tin oxide nanowire array composite comprises the steps that (1) the indium tin oxide nanowire array is generated on the conducting substrate through deposition by means of the chemical vapor deposition method with gold nanoparticles as a catalyst; (2) CdS nano-particles are wrapped on the indium tin oxide nanowire array by means of the chemical bath deposition method; (3) the CdS nano-particles are converted into the Cu2S nano-particles by means of the ion exchange method, and then the composite is obtained through calcinations in the inert atmosphere. The performance of the constituted solar cell with a counter electrode material made of the Cu2S@ITO nanowire array prepared with the method is far better than that of a solar cell with a counter electrode material made of precious metal Pt or Au and a transition metal chalcogen compound of a metal matrix.

The invention discloses a method for preparing a self-assembled nanostructure composite material for solar energy absorption, belonging to the technical field of functional coatings. The invention directly builds a self-assembled nanostructure on the surface of the alloy compounded with three transition metals through electrochemical treatment, and its nanoneedle array structure is beneficial to light capture and surface reflection reduction, and can realize multiple reflection and absorption of incident light. The films, whose main components are spinel oxides of transition metals, are mainly formed by electrochemically inducing the oxidation of metals in the substrate. Intrinsic absorption of spinel oxides is the dominant absorption mechanism. The absorbing coating of this structure has a high absorption rate in the solar spectrum, and has low heat loss, and has excellent selective absorption performance.