Acceptor Concentration Effects on Photovoltaic Response in the La1-xSrxMnO3/SrNbyTi1-yO3 Heterojunction |
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Authors: | LIAO Leng JIN Kui-Juan HAN Peng ZHANG Li-Li LÜ Hui-Bin GE Chen |
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Institution: | Beijing National Laboratory for Condensed Matter Physics, Institute of Physics, Chinese Academic of Sciences, Beijing 100190 |
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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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