Kim, Gee Yeong Kim, Ju Ri Jo, William Lee, Kee Doo Kim, Jin Young Trang Thi Thu Nguyen Yoon, Seokhyun 2024-01-20T08:30:46Z 2024-01-20T08:30:46Z 2021-09-02 2014-12 1567-1739 https://pubs.kist.re.kr/handle/201004/126081 Cu2ZnSnS4 (CZTS) has an optical band gap of 1.4-1.5 eV, which is similar to that of Cu(In,Ga)Se-2 (CIGS), and a high absorption coefficient (> 10(4) cm(-1)) in the visible light region. In previous reports, CIGS thin-film solar cells have been shown to improve the performance of the device since the secondary phase is removed by Potassium cyanide (KCN) etching treatment. Therefore, in this study we applied a KCN etching treatment on CZTS and measured the effects. We confirmed the removal of Cu2-xS via Kelvin probe force microscopy (KPFM) and Raman scattering spectroscopy. The effects of the experiment indicate that we can define with precision the location of the secondary phases, and therefore the control of the secondary phases will be easier and more efficient. Such capabilities could improve the solar cell performance of CZTS thin-films. (C) 2014 Elsevier B.V. All rights reserved. English ELSEVIER SCIENCE BV SOLAR-CELLS TRANSPORT Effects of Cu2-xS phase removal on surface potential of Cu2ZnSnS4 thin-films grown by electroplating Article 10.1016/j.cap.2014.09.009 1 CURRENT APPLIED PHYSICS, v.14, no.12, pp.1665 - 1668 CURRENT APPLIED PHYSICS 14 12 1665 1668 scie scopus kci ART001936644 000345397900011 2-s2.0-84908093922 Materials Science, Multidisciplinary Physics, Applied Materials Science Physics Article SOLAR-CELLS TRANSPORT Cu2ZnSn(S, Se)(4) Cu(In,Ga)Se-2 Kesterite Kelvin probe force microscopy KCN etching treatment