Synthesis of Solution-Processed Cu2ZnSnSe4 Thin Films on Transparent Conducting Oxide Glass Substrates

Title
Synthesis of Solution-Processed Cu2ZnSnSe4 Thin Films on Transparent Conducting Oxide Glass Substrates
Authors
아구스 이스마일조진우박세진황윤정민병권
Keywords
CZTS; solar cells; solution process; Cu2ZnSnSe4; CZTSe; Transparent conducting oxide glass
Issue Date
2014-07
Publisher
Bulletin of the Korean Chemical Society
Citation
VOL 35, NO 7, 1985-1988
Abstract
Cu2ZnSnSe4 (CZTSe) thin films were synthesized on transparent conducting oxide glass substrates via a simple, non-toxic, and low-cost process using a precursor solution paste. A three-step heating process (oxidation, sulfurization, and selenization) was employed to synthesize a CZTSe thin film as an absorber layer for use in thin-film solar cells. In particular, we focused on the effects of sulfurization conditions on CZTSe film formation. We found that sulfurization at 400 °C involves the formation of secondary phases such as CuSe2 and Cu2SnSe3, but they gradually disappeared when the temperature was increased. The formed CZTSe thin films showed homogenous and good crystallinity with grain sizes of approximately 600 nm. A solar cell device was tentatively fabricated and showed a power conversion efficiency of 2.2% on an active area of 0.44 cm2 with an open circuit voltage of 365 mV, a short current density of 20.6 mA/cm2, and a fill factor of 28.7%.
URI
http://pubs.kist.re.kr/handle/201004/47794
ISSN
02532964
Appears in Collections:
KIST Publication > Article
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