不同反射率双面太阳电池背面综合转换效率差异性研究

双面太阳电池是指硅片的正面和反面都可以接受光照并产生光生电压和电流的太阳电池,由于受到结构等各种因素的影响,目前还没有完善的测试方案用于双面太阳电池的完整测试。基于太阳能仿真环境PC1D,采用控制变量的方法来测定电池背面反射率对双面太阳电池综合转换效能的影响,研究了双面电池在不同背面受光条件下的测试结果,得出电池背面背景反射率增大时,双面太阳电池的综合转换效能的变化规律;确定了双面电池合理的测试条件,给出了双面电池科学的测试方案。结论对双面太阳电池的测试和应用具有重要意义。

Study on Conversion Efficiency Difference of Double-sided Solar Cells with Different Reflectivity

Double-side solar cells refer to the ones which can absorb light and translate the light energy into photoelectric voltage and current in the both sides. Nowadays there are no perfect test specifications available due to they have many different structures. In this paper, the relationship between back side reflectivity and comprehensive conversion efficiency of solar cells was analyzed with using variable controlling method and PC1D simulating environment. Many parameters including voltage, current, power and efficiency were experimented under different back side reflectivity. Based on these experiment results, effective test conditions of double-side solar cell are given and complete test solutions are also presented. The conclusions bring significance to the development and application of double side solar cells.