Minority-Carrier Lifetime and Surface Recombination Velocity in Single-Crystal CdTe

被引:47
|
作者
Kuciauskas, Darius [1 ]
Kanevce, Ana [1 ]
Dippo, Pat [1 ]
Seyedmohammadi, Shahram [2 ]
Malik, Roger [2 ]
机构
[1] Natl Renewable Energy Lab, Golden, CO 80401 USA
[2] First Solar, Santa Clara, CA USA
来源
IEEE JOURNAL OF PHOTOVOLTAICS | 2015年 / 5卷 / 01期
关键词
Cadmium compounds; charge-carrier lifetime; photovoltaic cells; photoluminescence (PL); GROWN CDTE; PHOTOLUMINESCENCE; BAND; LUMINESCENCE;
D O I
10.1109/JPHOTOV.2014.2359738
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 apply an earlier developed method [Kuciauskas et al., IEEE J. Photovoltaics, vol. 3, p. 1319, 2013] to analyze surface and bulk recombination in high-quality undoped single-crystal CdTe. By using two-photon excitation time-resolved photoluminescence, we determined a room-temperature minority-carrier lifetime of 360 ns. This lifetime has weak temperature dependence at 202-295 K. We also show that the high surface recombination velocity (> 10(5) cm/s) typical for single-crystal CdTe was reduced by an order of magnitude to approximate to 1 x 10(4) cm/s.
引用
收藏
页码:366 / 371
页数:6
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