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Carrier transport and surface potential over phase variations in the surface and bulk of highly efficient Cu2ZnSn(S,Se)(4) solar cells

Title
Carrier transport and surface potential over phase variations in the surface and bulk of highly efficient Cu2ZnSn(S,Se)(4) solar cells
Authors
Kim, JuranKim, JayeongKo, EunjiYoon, SeokhyunSim, Jun-HyoungYang, Kee-JeongKim, Dae-HwanKang, Jin-KyuSong, Yu JinJeon, Chan-WookJo, William
DGIST Authors
Kim, Juran; Kim, Jayeong; Ko, Eunji; Yoon, Seokhyun; Sim, Jun-Hyoung; Yang, Kee-JeongKim, Dae-HwanKang, Jin-Kyu; Song, Yu Jin; Jeon, Chan-Wook; Jo, William
Issue Date
2020-05
Citation
Progress in Photovoltaics, 28(5), 382-392
Type
Article
Article Type
Article in press
Author Keywords
carrier transportCu2ZnSn(SSe)(4) solar cellsKelvin probe force microscopymicro-Raman spectroscopynano-Auger electron spectroscopy
Keywords
THIN-FILMSGRAIN-BOUNDARIESFORMATION MECHANISMSECONDARY PHASESCU2ZNSNS4REMOVAL
ISSN
1062-7995
Abstract
We report highly efficient Cu2ZnSn(S,Se)4 (CZTSSe) thin films with a power conversion efficiency (PCE) of 12.3% at their surface and interface. The structural and electrical properties were locally investigated, using scanning probe microscopy and micro-Raman scattering, to improve the performance of kesterite solar cells. Interestingly, this research reports quite different results from the conventional kesterite solar cells, owing to the observance of undesirable voids and secondary phases. Nonetheless, the solar cells exhibit a high PCE of over 12%. Thus, we probe the kesterite solar cells as a function of the depth and introduce a mechanical dimple-etching process. The relatively low melting temperature of the pure-metal precursors results in the unique properties within the solar cell materials. Understanding these phenomena and their effects on carrier behavior enables the achievement of a higher PCE and better performance for kesterite solar cells. © 2020 John Wiley & Sons, Ltd.
URI
http://hdl.handle.net/20.500.11750/11501
DOI
10.1002/pip.3248
Publisher
John Wiley & Sons Inc.
Related Researcher
Files:
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Collection:
Division of Energy Technology1. Journal Articles


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