碲化锌的电导率温度关系及其在碲化镉太阳电池组件中的应用  

Temperature dependence of ZnTe/ZnTe∶Cu complex thin films and its applications in CdTe solar modules

作　　者：陈茜[1] 冯良桓[1] 郝瑞英[1] 张静全[1] 武莉莉[1] 蔡亚萍[1] 李卫[1] 宋慧瑾[1] 

机构地区：[1]四川大学材料科学与工程学院,四川成都610064

出　　处：《功能材料》2006年第2期188-190,共3页Journal of Functional Materials

基　　金：国家高技术研究发展计划(863计划)资助项目(2001AA513010)

摘　　要：用ZnTe/ZnTe∶Cu复合层作为背接触层,能很好的解决CdTe太阳电池的欧姆接触问题。以前的研究表明,ZnTe∶Cu因掺铜浓度的不同,显示出不同的电导率温度关系。本文仔细观察了各种掺杂浓度ZnTe∶Cu的电导率温度关系,并由此来选定掺铜浓度。实验还表明,对一个确定掺铜浓度的ZnTe/ZnTe∶Cu复合层,其退火温度对CdTe太阳电池的性能影响很大。为此,本文发展了通过测试ZnTe/ZnTe∶Cu复合层的电导温度关系,来确定退火温度的方法。目前,用ZnTe/ZnTe∶Cu复合层作背接触材料,获得了转换效率为7.03%的中面积碲化镉薄膜电池集成组件。The ZnTe/ZnTe ： Cu complex thin films, as the back contact layers, can resolve the ohm contact problem of CdTe/CdS solar cells. Our studies have showed that the different concentrations of Cu doped lead to the different relationships between conductivity and temperature. From the conductivity-temperature dependence of ZnTe/ZnTe ： Cu, the appropriate concentrations of Cu are determined. It has been found experimentally that for the given ZnTe/ZnTe ： Cu complex thin films, there is a great effect of annealing temperature on the performances of CdTe solar cells. Therefore, a method to decide annealing temperature through testing the relation of conductance-temperature of ZnTe/ZnTe ： Cu complex thin films is developed. The complex back contact and the method have been used for of medium area CdTe solar module, and a 7.03% efficiency of the modules has been demonstrated.

关 键 词：ZnTe/ZnTe:Cu复合层作背接触材料 太阳电池 电导率温度关系 

分 类 号：TM914.42[电气工程—电力电子与电力传动]