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Effect of selenization on local current and surface potential of sputtered Cu2ZnSn(S, Se)4 thin-films with 8% conversion efficiency

Title
Effect of selenization on local current and surface potential of sputtered Cu2ZnSn(S, Se)4 thin-films with 8% conversion efficiency
Authors
Kim, Gee yeongJeong, Ah ReumKim, Ju RiJo, WilliamKim, D.H.Hwang, D.K.Sung, S.J.Kang, J.K.
DGIST Authors
Kim, D.H.Hwang, D.K.; Sung, S.J.; Kang, J.K.
Issue Date
2013
Citation
39th IEEE Photovoltaic Specialists Conference, PVSC 2013, 383-385
Type
Conference
Article Type
Conference Paper
ISBN
9780000000000
ISSN
0160-8371
Abstract
Cu2ZnSn(S, Se)4 (CZTSSe) is emerged as a promising material because of non-toxic, inexpensive and earth abundant more than Cu(In, Ga)Se2. The highest conversion efficiency of CZTSSe is 11.1 % at IBM based on hydrazine process [1]. We have achieved CZTSSe thin-film solar cell 8% conversion efficiency by sputtering process. CZTSSe thin-films show different efficiency depending on selenization process. Depending on the different selenization process, conversion efficiencies in each sample are definitely distinguished from 8.06 to 3.17%. We investigated local electrical properties on these samples. The local surface potential is also critically different, which is ∼ 200 mV on 8.06% film and ∼ 70 mV on 3.17% film. From these results, we can suggest that selenization process can affect to local electrical characteristic as well as improving solar cell performances. © 2013 IEEE.
URI
http://hdl.handle.net/20.500.11750/5510
DOI
10.1109/PVSC.2013.6744173
Publisher
Institute of Electrical and Electronics Engineers Inc.
Related Researcher
Files:
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Collection:
Convergence Research Center for Solar Energy2. Conference Papers


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