Journal
PROCEEDINGS OF THE EMRS 2015 SPRING MEETING - SYMPOSIUM C ON ADVANCED INORGANIC MATERIALS AND STRUCTURES FOR PHOTOVOLTAICS
Volume 84, Issue -, Pages 127-133Publisher
ELSEVIER SCIENCE BV
DOI: 10.1016/j.egypro.2015.12.305
Keywords
CZTS; thin films; electrodeposition; sulfurization
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Kesterite Cu2ZnSnS4 (CZTS) is a very promising absorber material for low cost and high efficiency thin film photovoltaic cells due to its direct band gap and to its high absorption coefficient. In this work, CZTS layers were deposited onto Mo-coated glass substrates using a single step electrodeposition process. Sulfurization treatment was performed under Argon atmosphere at 500 degrees C. The effect of the deposition time in the range of 10 min- 40 min was investigated. X-ray diffraction and Raman spectroscopy have confirmed the Kesterite structure of all deposited films. The surface morphology of the samples was examined using scanning electron microscopy. Cu/(Zn+Sn) of about 0.80, determined by energy dispersive X-ray spectroscopy, was reached for CZTS films electrodeposited during 30 min. Photoluminescence Spectroscopy showed a broad PL band centered around 1.45 eV. (C) 2015 Published by Elsevier Ltd.
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