Carrier extraction from GaSb quantum rings in GaAs solar cells using direct laser excitation
Carrier extraction from GaSb quantum rings in GaAs solar cells using direct laser excitation
复制标题
使用直接激光激发从 GaAs 太阳能电池中的 GaSb 量子环中提取载流子
DOI:
10.1049/iet-opt.2013.0062
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发表时间:
2014
影响因子:
1.6
通讯作者:
James J
中科院分区:
文献类型:
--
作者:
James J
The authors report on the analysis of the hole escape mechanisms from type‐II GaSb quantum rings (QRs) embedded within the active region of a GaAs single junction solar cell. When the solar cell is excited by using a 1064 nm infrared laser with excitation energy lower than the bandgap of the GaAs matrix, photogenerated electron–hole pairs are created directly within the GaSb QRs. The QR photocurrent exhibits a linear dependence on the excitation intensity over several decades. The thermal activation energy was found to be weakly dependent on the incident light level and increased by only a few meV over several orders of excitation intensity. The magnitude of the relative absorption in the author's QRs when directly probed by using a 1064 nm laser with an incident power density of ∼ 2.6 W cm−2is found to be ∼ 1.4 × 10−4per layer. The thermal escape rate of the holes was calculated and found to be ∼ 1011to 1012s−1, which is much faster than the radiative recombination rate 109s−1. This behaviour is promising for concentrator solar cell development and has the potential to increase solar cell efficiency under a strong solar concentration.
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影响因子:
4
作者:
Carrington P
通讯作者:
Carrington P
影响因子:
3.2
作者:
Hwang, Jinyoung;Martin, Andrew J.;Phillips, Jamie D.
通讯作者:
Phillips, Jamie D.
DOI:
--
发表时间:
2009
期刊:
Photovoltaic Specialists Conference
影响因子:
--
作者:
S. Hubbard;C. Bailey;Ryne Aguinaldo;S. Polly;D. Forbes;R. Raffaelle
通讯作者:
R. Raffaelle
DOI:
--
发表时间:
2000
期刊:
影响因子:
--
作者:
P. Fry;L. Harris;S. Parnell;J. Finley;A. D. Ashmore;D. Mowbray;M. S. Skolnick;M. Hopkinson;G. Hill;J. Clark
通讯作者:
J. Clark
影响因子:
3.8
作者:
Carrington P
通讯作者:
Carrington P