Journal
JAPANESE JOURNAL OF APPLIED PHYSICS
Volume 47, Issue 1, Pages 598-601Publisher
IOP PUBLISHING LTD
DOI: 10.1143/JJAP.47.598
Keywords
Cu2ZnSnS4 (CZTS); thin film; solar cell; sol-gel sulfurizing method
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Cu2ZnSnS4 (CZTS) thin films were prepared by sulfurizing pre-annealed oxyhydrate precursors deposited by the sol-gel method. The precursors were obtained by coating solutions containing copper(II) acetate monohydrate, zinc(II) acetate dihydrate, tin(II) chloride dihydrate, 2-methoxyethanol, and monoethanolamine on a soda lime glass (SLG). By pre-annealing the precursors in air at 560 degrees C, chemical composition of films was almost stoichiometric, transmittance of IR region was increased and number of void was decreased while chemical composition of CZTS films deviated considerably from stoichiometry when the precursors were annealed N-2 + H-2 (5%) atmosphere at 460 and 560 degrees C.
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