Journal
ADVANCED MATERIALS
Volume 22, Issue 15, Pages 1763-+Publisher
WILEY-V C H VERLAG GMBH
DOI: 10.1002/adma.200902985
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- Institute of Materials Research and Engineering (IMRE)
- National University of Singapore (NUS)
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Appreciable photovoltaic responses to visible light are observed in epitaxial ferroelectric BiFeO3 thin films by sputtering deposition. The photocurrent direction is opposite to the BiFeO3 polarization vector and can be switched by poling the films in different directions (see figure). The as-deposited films are strongly self-polarized, exhibiting significant photovoltaic response before any electrical poling process.
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