CdS/CdTe异质结太阳电池极限效率的计算

Investigation on Limit Efficiency of CdS/CdTe Heterojunction Solar Cells

讨论了CdS/CdTe异质结的电流电压特性,研究了CdS/CdTe太阳电池在AM1.5太阳光谱辐射下的转换效率,给出了不计所有损失的理想极限情况下,其电池转换效率可达27%。同时讨论了考虑部分材料参数影响的条件下,实际CdS/CdTe太阳电池的转换效率,在所选定的参数下为23%,从近期实际制备的CdS/CdTe太阳电池的进展,以及较为合理的理论推论和分析来看,此效率将有可能达到。

The current-voltage properties of CdS/CdTe heterojunction are discussed, then, the limit efficiency of CdS/CdTe heterojunction solar cells are investigated under AM1.5 illumination. Analysis results show that the efficiency of solar cells can be achieved to 27% at idealized limit conditions without any lost, which is in agreement with previously reference result. At the same time, the realistic efficiency of CdS/CdTe heterojunction solar cells is about 23%, when some effect of material parameters are considered. From the considerable progress of CdS/CdTe solar cells during recent years, theoretical efficiency of 23% can be expected in the near future.