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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
  • Author Sung, Shi-Joon  
  • Research Interests Compound Semiconductor Materials & Processes
Files:
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Collection:
Convergence Research Center for Solar Energy2. Conference Papers


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