GROWTH OFCu2ZnSn(S,Se)4THIN FILMS BY A SIMPLE ECO-FRIENDLY SOLUTION ROUTE METHOD

H. Zhang, Z. Q. Li, Y. R. Chen, J. J. Li, Z. Sun, Z. Yang and S. M. Huang ()
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H. Zhang: Engineering Research Center for Nanophotonics, and Advanced Instrument, Ministry of Education, Department of Physics, East China Normal University, North Zhongshan Rd. 3663, Shanghai 200062, P. R. China
Z. Q. Li: Engineering Research Center for Nanophotonics, and Advanced Instrument, Ministry of Education, Department of Physics, East China Normal University, North Zhongshan Rd. 3663, Shanghai 200062, P. R. China
Y. R. Chen: Engineering Research Center for Nanophotonics, and Advanced Instrument, Ministry of Education, Department of Physics, East China Normal University, North Zhongshan Rd. 3663, Shanghai 200062, P. R. China
J. J. Li: Engineering Research Center for Nanophotonics, and Advanced Instrument, Ministry of Education, Department of Physics, East China Normal University, North Zhongshan Rd. 3663, Shanghai 200062, P. R. China
Z. Sun: Engineering Research Center for Nanophotonics, and Advanced Instrument, Ministry of Education, Department of Physics, East China Normal University, North Zhongshan Rd. 3663, Shanghai 200062, P. R. China
Z. Yang: Key Laboratory for Thin Film and Microfabrication, of the Ministry of Education, Research Institute of Micro/Nano Science and Technology, Shanghai Jiao Tong University, Shanghai 200240, P. R. China
S. M. Huang: Engineering Research Center for Nanophotonics, and Advanced Instrument, Ministry of Education, Department of Physics, East China Normal University, North Zhongshan Rd. 3663, Shanghai 200062, P. R. China

Surface Review and Letters (SRL), 2012, vol. 19, issue 04, 1-8

Abstract: A simple and hydrazine-free solution-based approach for depositingCu2ZnSnS4(CZTS) andCu2ZnSn(S,Se)4(CZTSSe) absorber layers is reported. The process involves incorporating metal salts(Cu(CH3COO)2, Zn(CH3COO)2, SnCl2)and thiourea into a single pyridine-based solution, spin-coating a precursor film, and sulfurizing with sulfur powders or selenizing usingSepellets in an inert atmosphere, to form the desired CZTS or CZTSSe films. X-ray diffraction and Raman spectra studies show that kesterite CZTS and CZTSSe are formed after sulfurization and selenization, respectively. The selenized CZTSSe displays higher crystallinity than the sulfurized CZTS. Photovoltaic devices (glass/Mo/CZTSSe/CdS/i-ZnO/n-ZnO/A) employing the solution precursor selenized at 500°C have yielded power conversion efficiency of 1.44% under AM 1.5 illumination.

Keywords: Cu2ZnSn(S; Se)4; solution; sulfurization; selenization; thin film solar cells (search for similar items in EconPapers)
Date: 2012
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DOI: 10.1142/S0218625X12500345

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