| CROSS-DISCIPLINARY PHYSICS AND RELATED AREAS OF SCIENCE AND TECHNOLOGY |
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The Photovoltaic Properties of BiFeO3La0.7Sr0.3MnO3 Heterostructures |
| LUO Bing-Cheng, CHEN Chang-Le**, FAN Fei, JIN Ke-Xin |
Key Laboratory of Space Applied Physics and Chemistry (Ministry of Education), School of Science, Northwestern Polytechnical University, Xi'an 710129
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| Cite this article: |
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LUO Bing-Cheng, CHEN Chang-Le, FAN Fei et al 2012 Chin. Phys. Lett. 29 018104 |
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Abstract An epitaxial BiFeO3/La0.7Sr0.3MnO3 (BFO/LSMO) multiferroic heterostructure is grown on an LaAlO3 (001) substrate by laser molecular beam epitaxy, and its photovoltaic properties are investigated. It is found that the photocurrent is significantly increased under illumination, and the short-circuit photocurrent has a linear relationship with the laser intensity. Furthermore, when the ferroelectric polarization of the BFO layer is switched, the short-circuit photocurrent and open-circuit voltage can be switched. These results are discussed by considering the contributions from the ferroelectric polarization and the electrode/film interface.
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| Keywords:
81.07.-b
85.50.-n
73.50.Pz
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Received: 13 July 2011
Published: 07 February 2012
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| PACS: |
81.07.-b
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(Nanoscale materials and structures: fabrication and characterization)
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85.50.-n
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(Dielectric, ferroelectric, and piezoelectric devices)
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73.50.Pz
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(Photoconduction and photovoltaic effects)
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