碲化镉太阳电池弱光性能研究

Study on the Weak-Light Performance of Cadmium Telluride Solar Cells

摘要: 本文通过选择了三种不同并联电阻的CdTe太阳电池进行对比研究，研究发现随着光强的减弱，CdTe太阳电池的短路电流密度(JSC)、开路电压(VOC)、单位输出功率(Pout)和填充因子(FF)均降低。结果显示并联电阻越大的CdTe太阳电池，各性能参数衰减越慢。通过分析并联电阻随光强的变化情况，我们发现并联电阻值以近似幂函数的方式增大，并且我们认为主要是并联电阻影响CdTe太阳电池的弱光特性。

Abstract: In this paper, three CdTe solar cells with different shunt resistances were selected for comparative study. We found that as the light intensity decreased, the short-circuit current density (JSC), open circuit voltage (VOC), unit output power (Pout), and fill factor (FF) of CdTe solar cells all decreased. The results showed that the CdTe solar cells with larger shunt resistance have slower decay of performance parameters. By analyzing the change of the shunt resistance with the light intensity, we found that the shunt resistance value increased in a way that approximated a power function. In the end, we believe that the shunt resistance mainly affects the weak light characteristics of CdTe solar cells.