| CONDENSED MATTER: ELECTRONIC STRUCTURE, ELECTRICAL, MAGNETIC, AND OPTICAL PROPERTIES |
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Acceptor Concentration Effects on Photovoltaic Response in the La1-xSrxMnO3/SrNbyTi1-yO3 Heterojunction |
| LIAO Leng, JIN Kui-Juan, HAN Peng, ZHANG Li-Li, LÜ Hui-Bin, GE Chen |
| Beijing National Laboratory for Condensed Matter Physics, Institute of Physics, Chinese Academic of Sciences, Beijing 100190 |
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| Cite this article: |
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LIAO Leng, JIN Kui-Juan, HAN Peng et al 2009 Chin. Phys. Lett. 26 057301 |
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Abstract Photovoltaic response in the heterojunction of La1-xSrxMnO3/SrNbyTi1-yO3 (LSMO/SNTO) is analyzed theoretically based on the drift-diffusion model. It is found that the decrease of acceptor concentration in the La1-xSrxMnO3 layer of heterojunction can increase the peak value of photovoltaic signal and the speed of photovoltaic response, whereas the changing of donor concentration in the SrNbyTi1-yO3 layer has no such evident effect. Furthermore, the result also indicates that the modulation of Sr doping in La1-xSrxMnO3 is an effective method to accommodate the sensitivity and the speed of photovoltaic response for LSMO/SNTO photoelectric devices.
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| Keywords:
73.40.Lq
72.40.+w
78.20.Bh
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Received: 16 October 2008
Published: 23 April 2009
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| PACS: |
73.40.Lq
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(Other semiconductor-to-semiconductor contacts, p-n junctions, and heterojunctions)
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72.40.+w
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(Photoconduction and photovoltaic effects)
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78.20.Bh
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(Theory, models, and numerical simulation)
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