背电极花样对单晶硅太阳电池机械性能的影响

INVESTIGATIONS OF THE INFLUENCE OF THE REAR BUSBAR PATTERNS ON THE MECHANICAL PROPERTY OF SINGLE CRYSTALLINE SILICON SOLAR CELLS

用三点弯方法研究了3种不同背电极花样的单晶硅太阳电池前后主电极附近以及铝背场和细栅区域的机械性能,初步探讨了背电极花样对断裂强度的影响。研究表明:背电极花样对太阳电池的断裂强度有明显影响,通过改进背电极花样能够有效提高太阳电池的机械性能,降低其破碎率。

Single crystalline silicon solar cells with three different rear busbar patterns were presented in the paper, the mechanical property in the front and rear busbar region, aluminum back surface area, and fingers region was investigated by three point bending test, respectively. The influence of the rear busbar patterns on the fracture strength was discussed. It＇ s indicated that the rear busbar patterns have obvious influence on the fracture strength of solar cells. The mechanical property can be effectively improved by modifying the rear busbar patterns, which result in reducing broken rate.