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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
Ewha Authors
조윌렴윤석현
SCOPUS Author ID
조윌렴scopus; 윤석현scopus
Issue Date
2020
Journal Title
PROGRESS IN PHOTOVOLTAICS
ISSN
1062-7995JCR Link

1099-159XJCR Link
Citation
PROGRESS IN PHOTOVOLTAICS vol. 28, no. 5, pp. 382 - 392
Keywords
carrier transportCu2ZnSn(SSe)(4) solar cellsKelvin probe force microscopymicro-Raman spectroscopynano-Auger electron spectroscopy
Publisher
WILEY
Indexed
SCIE; SCOPUS WOS scopus
Document Type
Article
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.
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DOI
10.1002/pip.3248
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자연과학대학 > 물리학전공 > Journal papers
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