Journal
APPLIED PHYSICS EXPRESS
Volume 3, Issue 10, Pages -Publisher
JAPAN SOC APPLIED PHYSICS
DOI: 10.1143/APEX.3.101202
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- Ministry of Education, Culture, Sports, Science and Technology, Japan (MEXT)
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Cu2ZnSnS4 (CZTS) thin films were investigated as photoelectrodes for H-2 evolution from water under solar light. Surface modifications with Pt, CdS, and TiO2 enhanced the incident photon-to-current conversion efficiency of CZTS thin film electrode for H-2 production from water by three orders of magnitude to 40% (lambda = 600 nm). The solar energy conversion efficiency in H-2 production using modified CZTS reached 1.2%. Our results demonstrate that the photoelectrochemical properties of CZTS were significantly improved by surface modification, which suggests the feasibility of CZTS as a photocathode for a photoelectrochemical water-splitting system. (C) 2010 The Japan Society of Applied Physics
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