Photoreflectance characteristics of chemical-bath-deposited-CdS layer in Cu(In,Ga)Se2 thin-film solar cells

被引：6
|
作者：
Chung, Yong-Duck [1 ,2 ]
Cho, Dae-Hyung [1 ]
Choi, Hae-Won [1 ,2 ]
Park, Soo-Jeong [1 ,2 ]
Kim, Ju-Hee [1 ,2 ]
Ahn, Byung-Jun [3 ]
Song, Jung-Hoon [3 ]
Lee, Kyu-Seok [1 ]
Kim, Jeha [4 ]
机构：
[1] Elect & Telecommun Res Inst, Taejon 305700, South Korea
[2] Univ Sci & Technol, Taejon 305350, South Korea
[3] Kongju Natl Univ, Gongju Si 314701, Chungnam, South Korea
[4] Cheongju Univ, Cheongju 360764, Chungbuk, South Korea
来源：
JOURNAL OF VACUUM SCIENCE & TECHNOLOGY A | 2012年 / 30卷 / 04期
关键词：
D O I：
10.1116/1.4728980
中图分类号：
TB3 [工程材料学];
学科分类号：
0805 ; 080502 ;
摘要：
The authors have characterized the CdS layer in Cu(In, Ga)Se-2 thin-film solar cells using photoreflectance (PR) spectroscopy and investigated its influence on the photovoltaic performance. The CdS layer was fabricated by chemical bath deposition with various concentrations of ammonia (1.0-3.0 M), thiourea (0.025-0.1M), and Cd-salt (0.0004-0.003M) as well as various thicknesses (30-90nm). The PR transition energy in CdS increased from 2.282 to 2.366 eV as the thiourea concentration increased from 1.0 to 3.0 M, whereas it decreased as the thickness of CdS increased. The conversion efficiency depended on neither the ammonia and the Cd-salt concentrations nor the thickness of CdS, whereas it changed from 14.72% to 15.81% as the thiourea concentration decreases from 3.0 to 1.0 M. (C) 2012 American Vacuum Society. [http://dx.doi.org/10.1116/1.4728980]
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页数：6
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