Te/Cu/Ni热处理对CdTe太阳电池的影响-《郑州大学学报(工学版)》

文章信息/Info

作者:: 王文武; 郑家贵; 冯良桓; 等.; 四川大学,材料科学与工程学院,四川,成都,610064, 四川大学,材料科学与工程学院,四川,成都,610064, 四川大学,材料科学与工程学院,四川,成都,610064, 四川大学,材料科学与工程学院,四川,成都,610064, 四川大学,材料科学与工程学院,四川,成都,610064, 四川大学,材料科学与工程学院,四川,成都,610064, 四川大学,材料科学与工程学院,四川,成都,610064, 四川大学,材料科学与工程学院,四川,成都,610064, 四川大学,材料科学与工程学院,四川,成都,61

Author(s):: WANG Wenwu; ZHENG Jiagui; FENG Lianghuan; etc; 1．Department of Highway Engineering，Shaanxi College of Communication Technology，Xi’an 710018，China；2．School ofHighway，Chang’an University，Xi’an 710064，China

摘要:: 在CdTe太阳电池的制备中,采用工艺简单的Te/Cu/Ni结构作为接触来改善CdTe太阳电池的接触特性.采用不同的温度组合对这种结构的CdTe太阳电池进行退火处理.通过热处理前后电池的性能参数变化和暗态I～V、C～V曲线分析了Te/Cu/Ni接触对器件性能的影响.通过分析可以认为Te/Cu/Ni接触的热处理对CdTe太阳电池的性能有重要影响.当Cu退火温度较低时(130 ℃,160 ℃),Te/Cu/Ni的再处理能够显著提高电池效率,使电池最终效率高于Cu高温退火的电池.而Cu退火温度较高时(190 ℃),Te/Cu/Ni的再处理使器件性能变差,且Te/Cu/Ni热处理温度越高,电池性能下降越厉害.实验证明Te/Cu/Ni结构作为CdTe太阳电池的背接触经过合适热处理可能改善电池性能,而且工艺比较简单.

Abstract:: In the preparation of CdTe solar cells, the contact characteristics of CdTe solar cells are improved by using Te/Cu/Ni structures with simple processes as contacts. Different temperature combinations were used to annealed CdTe solar cells of this structure. The influence of Te/Cu/Ni contact on device performance was analyzed by changing the performance parameters of the battery before and after heat treatment and the dark I~V and C~V curves. Through the analysis, it can be concluded that the heat treatment of Te/Cu/Ni contact has an important influence on the performance of CdTe solar cells. When the cur annealing temperature is low (130 °C, 160 °C), the reprocessing of Te/Cu/Ni can significantly improve the cell efficiency, so that the final efficiency of the cell is higher than that of the Cu high-temperature annealed battery. However, when the Cu annealing temperature is high (190 °C), the reprocessing of Te/Cu/Ni makes the device performance worse, and the higher the heat treatment temperature of Te/Cu/Ni, the more severe the degradation of battery performance. Experiments show that the Te/Cu/Ni structure as the back contact of CdTe solar cells may improve the performance of the battery after appropriate heat treatment, and the process is relatively simple.