Analysis of Research Progress of Tandem Solar Cells

The research progress of laminated solar cells. The laminated solar cells composed of sub-cells with different band gap widths can effectively increase the energy absorption of incident photons by the solar cell, thereby improving its conversion efficiency. This article reviews the research progress of photovoltaic performance and various laminated photovoltaic devices, such as composite laminated solar cells, silicon laminated solar cells, polymer laminated dye-sensitized laminated solar cells and solar cells, and proposes some technical countermeasures to improve Conversion efficiency of tandem solar cells. In recent years, solar photovoltaic technology has developed rapidly. Monocrystalline silicon and polycrystalline silicon solar cells have been commercialized, and composite solar cells, polymer solar cells and dye-sensitized solar cells are also under development. The development history of photovoltaic technology has proved that to improve the conversion efficiency of solar cells, the following two aspects must be considered. On the other hand, the performance of photovoltaic materials and the structure of photovoltaic devices are improved, and the various energy losses of photocarriers in the battery [1] are reduced. If battery packs with different band gap widths are combined into laminated solar cells, each sub-cell can absorb photon energy matching its own band gap width, which can expand the absorption range of sunlight and greatly improve the conversion efficiency. In 1994, Meier[23] first proposed the concept of tandem solar cells and produced tandem cells with an initial efficiency of 9.1%. Since then, the research on tandem solar cells has been eagerly shut down by people. Please pay attention. Especially in recent years, the efficiency of tandem solar cells has been steadily improved by developing new materials, improving processes and optimizing cell structure. At present, the conversion efficiency of the GaInP/GaAs/GaInNAs triple junction solar cell under the condition of [4] has reached 43.5%. In the future, tandem solar cells are expected to become high-efficiency solar cells. The photovoltaic performance of composite solar cells, silicon-based laminated solar cells, polymer laminated solar cells and dye-sensitized laminated solar cells are reviewed. As the most promising third-generation solar cell, tandem solar cells are making important progress. An important research direction is to improve the conversion efficiency of solar cells and reduce processing costs. In order to further improve the solar energy conversion efficiency, the following aspects should be paid attention to: 1) Regarding the composite tandem solar cell, it is necessary to further improve its tunnel junction characteristics, optimize the material composition of the sub-cell, and process a good current matching, high lattice Matched and band gap matched composite tandem solar cells. 2) Further optimize the intrinsic layer thickness, doping concentration and intermediate layer materials of silicon-based tandem solar cells, and find the most suitable materials and process parameters to improve the performance of tandem solar cells; 3) increase the use of polymer materials and organic Research on dye stability to improve the stability of polymer laminated solar cells and dye-sensitized laminated solar cells. With the development of tandem solar cell technology, tandem solar cells are expected to become the mainstream of the photovoltaic industry in the near future. Disclaimer: Some pictures and content of articles published on this site are from the Internet. If there is any infringement, please contact to delete. Previous post: The use of lithium batteries in new energy vehicles will exceed that of portable devices