新型高效四结太阳能电池的电流匹配和量子效率模拟
Novel high efficiency quadruple junction solar cell with current matching and quantum efficiency simulations
摘要：
在模拟的四结太阳能电池中，在1个太阳光浓度下，通过In0.51Ga0.49P、GaAs、In0.24Ga0.76As和In0.19Ga0.81Sb子电池层的新型组合实现了47.2%的高理论效率。这些材料的电子带隙分别为1.9eV、1.42eV、1.08eV和0.55eV。这种独特的排列方式使电池能够吸收太阳光中从紫外线到深红外波长的光子。优化了子电池的外延层和基极厚度以及材料的掺杂水平，以保持所有四个结中的相同电流并获得最高的转换效率。电池的短路电流密度、开路电压和填充因子分别为14.7 mA/cm ~ 2、3.38 V和0.96。在我们的设计中，我们考虑了1个太阳，AM 1.5全球太阳光谱。
英文摘要：
A high theoretical efficiency of 47.2% was achieved by a novel combination of In0.51Ga0.49P, GaAs, In0.24Ga0.76As and In0.19Ga0.81Sb subcell layers in a simulated quadruple junction solar cell under 1 sun concentration. The electronic bandgap of these materials are 1.9 eV, 1.42 eV, 1.08 eV and 0.55 eV respectively. This unique arrangement enables the cell absorb photons from ultraviolet to deep infrared wavelengths of the sunlight. Emitter and base thicknesses of the subcells and doping levels of the materials were optimized to maintain the same current in all the four junctions and to obtain the highest conversion efficiency. The short-circuit current density, open circuit voltage and fill factor of the solar cell are 14.7 mA/cm2, 3.38 V and 0.96 respectively. In our design, we considered 1 sun, AM 1.5 global solar spectrum.
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