Journal
ADVANCED MATERIALS
Volume 24, Issue 6, Pages 720-+Publisher
WILEY-BLACKWELL
DOI: 10.1002/adma.201103470
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Funding
- U.S. Department of Energy, Office of Basic Energy Sciences [DE-SC0001060]
- Center on Nanostructuring for Efficient Energy Conversion (CNEEC), an Energy Frontier Research Center
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Scanning Kelvin probe microscopy (SKPM) measurements reveal a higher positive surface potential at the grain boundaries (GBs) as compared to the grain while conductive atomic force microscopy (C-AFM) measurements show higher current flow in the vicinity of the GBs of Cu2ZnSnS4 (CZTS) and Cu2ZnSn(S, Se)(4) (CZTSSe). These results demonstrate the enhanced minority carrier collection taking place at the GBs of CZTS and CZTSSe.
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