%0 Journal Article %1 basu2008photoconductivity %A Basu, SR %A Martin, LW %A Chu, YH %A Gajek, M %A Ramesh, R %A Rai, RC %A Xu, X %A Musfeldt, JL %D 2008 %I AIP %J Applied Physics Letters %K BPVE BiFeO3 bandgap conductivity experiment ferroelectric_photovoltaics oxygen_vacancies %N 9 %P 091905 %T Photoconductivity in BiFeO3 thin films %V 92 %X The optical properties of epitaxial BiFeO 3 thin films have been characterized in the visible range. Variable temperature spectra show an absorption onset near 2.17 eV, a direct gap ͑2.667Ϯ 0.005 eV at 300 K͒, and charge transfer excitations at higher energy. Additionally, we report photoconductivity in BiFeO 3 films under illumination from a 100 mW/ cm 2 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 0.1 Torr. Large increases in photoconductivity are observed in light.

@article{basu2008photoconductivity, abstract = {The optical properties of epitaxial BiFeO 3 thin films have been characterized in the visible range. Variable temperature spectra show an absorption onset near 2.17 eV, a direct gap ͑2.667Ϯ 0.005 eV at 300 K͒, and charge transfer excitations at higher energy. Additionally, we report photoconductivity in BiFeO 3 films under illumination from a 100 mW/ cm 2 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 0.1 Torr. Large increases in photoconductivity are observed in light.}, added-at = {2018-08-19T23:34:45.000+0200}, author = {Basu, SR and Martin, LW and Chu, YH and Gajek, M and Ramesh, R and Rai, RC and Xu, X and Musfeldt, JL}, biburl = {https://www.bibsonomy.org/bibtex/2e281fb6003953395db3c62aa524b98e5/skoerbel}, interhash = {62a5147dea77c6357baa723df9ee666e}, intrahash = {e281fb6003953395db3c62aa524b98e5}, journal = {Applied Physics Letters}, keywords = {BPVE BiFeO3 bandgap conductivity experiment ferroelectric_photovoltaics oxygen_vacancies}, number = 9, pages = 091905, publisher = {AIP}, timestamp = {2018-08-22T00:48:58.000+0200}, title = {Photoconductivity in BiFeO3 thin films}, volume = 92, year = 2008 }