Bi2Te3 thin films prepared by co-evaporation for CdTe thin film solar cells

被引:23
|
作者
Tang, Rongzhe [1 ]
Wang, Zhouling [1 ]
Li, Wei [1 ]
Feng, Lianghuan [1 ]
Zhang, Jingquan [1 ]
Wu, Lili [1 ]
Li, Bing [1 ]
Zeng, Guanggen [1 ]
Wang, Wenwu [1 ]
机构
[1] Sichuan Univ, Coll Mat Sci & Engn, Chengdu 610064, Peoples R China
基金
中国国家自然科学基金;
关键词
CdTe solar cell; Back contact; Bi2Te3; DOPED CDTE; PHYSICAL-PROPERTIES; SPUTTERED BI2TE3; BACK CONTACTS; OPTIMIZATION; TEMPERATURE; STABILITY; EFFICIENT; CRYSTAL; CSVT;
D O I
10.1016/j.solmat.2013.10.039
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
Bi2Te3 thin films were fabricated by vacuum co-evaporation and the properties of the films were investigated using X-ray diffraction, Hall measurements, and synchrotron radiation photoemission spectroscopy. The results indicate that p-type Bi2Te3 films, which have a work function of about 5.4 eV and carrier concentration of the order of 10(21) cm(-3), are a rhombohedral phase with a strong (105) preferred orientation. A co-evaporated Bi2Te3 buffer layer was used for a back contact to CdTe thin film solar cells. C-V measurements, light and dark J-V measurements, and spectral response analysis also show that the p back contact has greatly enhanced cell performance. (C) 2013 Elsevier B.V. All rights reserved.
引用
收藏
页码:92 / 98
页数:7
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