Recombination Analysis in Cadmium Telluride Photovoltaic Solar Cells With Photoluminescence Spectroscopy

被引：46
作者：
Kuciauskas, Darius [1 ]
Dippo, Pat [1 ]
Zhao, Zhibo [2 ]
Cheng, Long [2 ]
Kanevce, Ana [1 ]
Metzger, Wyatt K. [1 ]
Gloeckler, Markus [2 ]
机构：
[1] Natl Renewable Energy Lab, Golden, CO 80401 USA
[2] First Solar Inc, Perrysburg, OH 43551 USA
来源：
IEEE JOURNAL OF PHOTOVOLTAICS | 2016年 / 6卷 / 01期
关键词：
Cadmium telluride; photovoltaic (PV) device; recombination; time-resolved photoluminescence (TRPL); CDTE THIN-FILM; CARRIER LIFETIME; TEMPERATURE; SURFACE;
D O I：
10.1109/JPHOTOV.2015.2483366
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：
We used photoluminescence (PL) spectroscopy to study recombination in polycrystalline CdS/CdTe photovoltaic solar cells with open-circuit voltages in the range of 0.899-0.895 V. From PL emission spectra, we identified defects with an activation energy of 0.11-0.12 eV in the junction and back-contact regions. At < 100 K, lifetimes in devices were similar to those in single crystals and ranged from 300-400 ns. Strong lifetime temperature dependence at 100-300 K suggests the presence of a relatively shallow recombination center. Therefore, it is possible that in CdTe solar cells, lifetime is limited by relatively shallow defects.
引用
收藏
页码：313 / 318
页数：6
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