Improved performance of CdTe solar cells with CdS treatment

被引：27
作者：
Li, Hui [1 ]
Liu, Xiangxin [1 ]
机构：
[1] Chinese Acad Sci, Inst Elect Engn, Key Lab Solar Thermal Energy & Photovolta Syst, Beijing 100190, Peoples R China
来源：
SOLAR ENERGY | 2015年 / 115卷
基金：
美国国家科学基金会;
关键词：
CdS cooling process; CdTe solar cells; Radio-frequency magnetron sputtering; Thin-film solar cells; THIN-FILMS; ATMOSPHERES;
D O I：
10.1016/j.solener.2015.02.044
中图分类号：
TE [石油、天然气工业]; TK [能源与动力工程];
学科分类号：
0807 ; 0820 ;
摘要：
CdTe thin-film solar cells are usually composed of n-CdS/p-CdTe. The treatment of CdS in the magnetron chamber prior to radio-frequency magnetron sputtering of CdTe had a significant effect on the properties of CdTe solar cells. We found that a CdS cooling and reheating process prior to CdTe deposition had a significant effect on the energy conversion efficiency and open circuit voltage of CdTe solar cells. Without cooling and reheating CdS before CdTe deposition, the energy conversion efficiency and open circuit voltage of the CdTe solar cell only reached 12.0 +/- 0.5% and 759 +/- 1 mV, respectively. However, the energy conversion efficiency and open circuit voltage of the CdTe solar cell with a CdS cooling and reheating process before CdTe deposition were 13.3 +/- 0.3% and 828 +/- 1 mV, respectively. CdS films after the cooling and reheating process had larger grains, superior crystalline quality, and a higher S/Cd atomic ratio compared with films that did not undergo a CdS cooling and reheating process. CdTe grown on CdS with a cooling and reheating process had the largest grain size after chloride treatment. (C) 2015 Elsevier Ltd. All rights reserved.
引用
收藏
页码：603 / 612
页数：10
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