7results about How to "Guaranteed photoelectric conversion efficiency" patented technology

The invention relates to the field of photovoltaic technology, in particular to a back contact solar cell and a photovoltaic module. The back contact solar cell comprises a substrate, first areas and second areas which are alternately arranged at intervals in the X direction are formed on the backlight face of the substrate, gaps between the adjacent first areas and second areas form third areas, a first doping layer is formed in each first area, a second doping layer is formed in each second area, and a second doping layer is formed in each second area. A third doping layer is formed in each third region; the doping concentration of the third doping layer is greater than the doping concentration of the first doping layer and the doping concentration of the second doping layer; the third doped layer is electrically connected with the adjacent first doped layer and the adjacent second doped layer. Compared with the prior art, the arrangement of the third doping layer is beneficial to generating leakage current under relatively low reverse bias voltage, so that the hot spot temperature of the assembly is remarkably reduced, the reliability of a single battery and the assembly is improved, and the phenomenon of abnormal concentration of reverse leakage current can be avoided.

This invention discloses a germanium photodetector and semiconductor device. The germanium photodetector includes: a silicon substrate; a first germanium thin film layer deposited on the silicon substrate; the first germanium thin film layer having multiple penetrating dislocations extending through its thickness; multiple pits corresponding one-to-one with the multiple penetrating dislocations formed on the surface of the first germanium thin film layer, and the inner surface of each pit being covered with an amorphous material layer; and a second germanium thin film layer deposited on the surface of the first germanium thin film layer and on the amorphous material layer within each pit, filling each pit. The amorphous material layer effectively blocks the extension of dislocations, reduces dislocation density, and ensures the photoelectric conversion efficiency of the device. Furthermore, by integrating the epitaxial chamber, deposition chamber, and pre-cleaning chamber into the same semiconductor device through a transfer chamber to produce the germanium photodetector, the contact path of external contaminants is reduced, the process flow is simplified, production efficiency is improved, and space and cost are optimized.

The utility model discloses a solar street lamp relates to the technical field of lamps and lanterns, including the lamp pole and a plurality of solar energy institutions, the lamp pole is parallel to the up and down direction, a plurality of solar energy institutions are arranged on the lamp pole along the up and down direction, and the light receiving surface of a plurality of solar energy institutions is perpendicular to the horizontal direction. In the morning, evening etc. When the solar elevation angle is small, the light of low angle oblique incidence and the incident angle of the light receiving surface of the vertical setting of solar energy institution significantly reduce, make the light more close to the front illumination state, the energy loss of traditional horizontal light receiving surface because of the large angle reflection is reduced greatly, effectively improve the photoelectric conversion efficiency of solar energy institution in the morning and evening period, and then be favorable to guarantee the illumination effect of solar street lamp in the morning and evening period.

The invention provides a solar power generation device for a ship deck, and relates to the field of solar power generation. The solar power generation device for the ship deck comprises an installation frame and a photovoltaic power generation panel which are installed on the ship deck, arc-shaped rails are fixedly installed on the installation frame, an installation base moving along the arc-shaped track of the rails is arranged between the two rails, the photovoltaic power generation panel is installed on the installation base, and a fixing piece is fixedly arranged on the installation base. According to the solar power generation device for the ship deck, ship sailing wind energy is used for driving the impeller, impurities are efficiently shaken off through dual effects, the problem that the impurities on the ship deck shield the photovoltaic panel is solved, two sets of reverse pawl and ratchet mechanisms are adopted, reciprocating swing full-stroke power generation of the mounting base is achieved, energy waste is avoided, and the energy utilization rate is increased; the whole structure does not need extra power, has the advantages of being clean, efficient, sufficient in energy recovery and easy, convenient and economical to operate and maintain, guarantees the photoelectric conversion efficiency, and enhances the ship energy supply capacity.

The utility model belongs to the technical field of solar cell protection, and discloses a perovskite cell protection structure, which comprises a perovskite cell, and the perovskite cell is deposited on the surface of the perovskite cell through a chemical vapor deposition method to form a packaging structure. The perovskite cell comprises a transparent conductive substrate, an electron transport layer is deposited on the transparent conductive substrate, a perovskite light absorption layer is deposited on the electron transport layer, a hole transport layer is deposited on the perovskite light absorption layer, and a metal electrode is deposited on the hole transport layer. The packaging structure comprises a first packaging layer, the first packaging layer is deposited on the whole surface of the perovskite cell through a chemical vapor deposition method, the outer surface of the first packaging layer is coated with a second packaging layer, the outer surface of the second packaging layer is covered with a third packaging layer, and the transparent conductive substrate is indium tin oxide or fluorine-doped tin oxide. According to the utility model, environmental factors are effectively blocked through multi-layer packaging, so that the stability and the service life of the cell are improved, the photoelectric conversion efficiency can be ensured, and the solar cell is suitable for large-scale production.

The utility model discloses a solar cell, and relates to the technical field of solar cells. The solar cell includes: a silicon substrate; the P-type doped region and the N-type doped region are arranged on the main surface of the silicon substrate; the N-type doped region is provided with a first tunneling oxide layer, a first N-type doped layer, a heat-resistant isolation layer and a second N-type doped layer from inside to outside; and the P-type doped region is provided with a second tunneling oxide layer and a P-type doped layer from inside to outside. According to the embodiment, synchronous diffusion of the N-type doping element and the P-type doping element can be realized through one-time high-temperature annealing.

The utility model discloses a kind of BIPV photovoltaic devices, including light-transmitting first bearing plate group, battery assembly, curved conductive sheet and light-transmitting or non-light-transmitting second bearing plate group;Battery assembly includes at least one battery string, the battery string includes multiple cell pieces, multiple the cell piece is successively connected in series and is arranged along the length direction of the battery string, curved conductive sheet is set between two adjacent cell pieces, the first end of the conductive sheet is connected with the front electrode layer of one of the cell piece, the tail end of the conductive sheet is connected with the back electrode layer of another cell piece, first bearing plate group, battery assembly and second bearing plate group are sequentially stacked, wherein, at the position corresponding with conductive sheet, first bearing plate group has first light shielding part and / or first refractive part, the design structure is compact, guarantees photoelectric conversion efficiency, appearance is beautiful, reliable in use.