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Photovoltaic effects in BiFeO3
- Source :
- Applied Physics Letters. 95:062909
- Publication Year :
- 2009
- Publisher :
- AIP Publishing, 2009.
-
Abstract
- We report a photovoltaic effect in ferroelectric BiFeO3 thin films. The all-oxide heterostructures with SrRuO3 bottom and tin doped indium oxide top electrodes are characterized by open-circuit voltages ∼0.8–0.9 V and external quantum efficiencies up to ∼10% when illuminated with the appropriate light. Efficiencies are at least an order of magnitude larger than the maximum efficiency under sunlight (AM 1.5) thus far reported for ferroelectric-based devices. The dependence of the measured open-circuit voltage on film thickness suggests contributions to the large open-circuit voltage from both the ferroelectric polarization and band offsets at the BiFeO3/tin doped indium oxide interface.
Details
- ISSN :
- 10773118 and 00036951
- Volume :
- 95
- Database :
- OpenAIRE
- Journal :
- Applied Physics Letters
- Accession number :
- edsair.doi...........ed5b674e72a11c64b91565de36dd24de
- Full Text :
- https://doi.org/10.1063/1.3204695