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Photoconductivity in BiFeO3 thin films
Abstract
The optical properties of epitaxial BiFeO3 thin films have been characterized in the visible range. Variable temperature spectra show an absorption onset near 2.17eV, a direct gap (2.667±0.005eV at 300K), and charge transfer excitations at higher energy. Additionally, we report photoconductivity in BiFeO3 films under illumination from a 100mW∕cm2 white light source. A direct correlation is observed between the magnitude of the photoconductivity and postgrowth cooling pressure. Dark conductivities increased by an order of magnitude when comparing films cooled in 760 and 0.1Torr. Large increases in photoconductivity are observed in light.
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Cited by
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Self-citationShift current bulk photovoltaic effect in polar materials—hybrid and oxide perovskites and beyond
Tan, L. Z., Zheng, F., Young, S. M., Wang, F., Liu, S., & Rappe, A. M. (2016) · npj Computational Materials · doi:10.1038/npjcompumats.2016.26 · Cited by 393
BiFeO3epitaxial thin films and devices: past, present and future
Sando, D., Barthélémy, A., & Bibes, M. (2014) · Journal of Physics: Condensed Matter · doi:10.1088/0953-8984/26/47/473201 · Cited by 353
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Metadata
- Authors
- Basu, S. R., Martin, L. W., Chu, Y. H., Gajek, M., Ramesh, R., Rai, R. C., Xu, X., & Musfeldt, J. L.
- Venue
- Applied Physics Letters
- Publisher
- AIP Publishing
- Published
- 2008-03-03
- Volume
- 92
- Issue
- 9
- ISSN
- 0003-6951 (ISSN-L)
- 1077-3118
- OpenAlex
- W1613827426
- Cited by
- 507
- References
- 0
- FWCI
- 9.24
- Type
- journal article
- Language
- en
- Open access
- closed
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- Basu, S. R., Martin, L. W., Chu, Y. H., Gajek, M., Ramesh, R., Rai, R. C., Xu, X., & Musfeldt, J. L. (2008). Photoconductivity in BiFeO3 thin films. Applied Physics Letters. https://doi.org/10.1063/1.2887908
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