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Bulletin of the Korean Chemical Society (BKCS)

ISSN 0253-2964(Print)
ISSN 1229-5949(Online)
Volume 35, Number 7
BKCSDE 35(7)
July 20, 2014

Title	Synthesis of Solution-Processed Cu₂ZnSnSe₄ Thin Films on Transparent Conducting Oxide Glass Substrates
Author	Agus Ismail, Jin Woo Cho, Se Jin Park, Yun Jeong Hwang,, Byoung Koun Min*
Keywords	Cu₂ZnSnSe₄, CZTSe, Transparent conducting oxide glass, Solar Cells, Solution processes
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%.
Page	1985 - 1988
Full Text	PDF

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