Manganite-based heterojunction and its photovoltaic effects
Manganite-based heterojunction and its photovoltaic effects
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DOI：
10.1063/1.1702128
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发表时间：
2004-04
影响因子：
4
通讯作者：
Jirong Sun;C. Xiong;B. Shen;P. Wang;Y. Weng
中科院分区：
文献类型：
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作者：
Jirong Sun;C. Xiong;B. Shen;P. Wang;Y. Weng
在掺Nb 0.5wt%的SrTiO 3（STON）衬底上生长La0.29Pr0.38Ca0.33MnO3（LPCM）薄膜，制备了异质结，并对其特性进行了实验研究。除了相当好的整流行为，异质结表现出显着的光伏效应。两个电极LPCM和STON上的光电压随激光功率（λ=532 nm）以约0.19 V/W的速率几乎呈线性增加，并且在高达100 mW的光功率下没有观察到饱和趋势。额外的载流子的寿命是7和9毫秒之间（轻微的脉冲激光能量依赖），从光电压的衰减后关闭光照明。本工作显示了锰氧化物基异质结作为光电器件的巨大潜力。
A heterojunction is fabricated by growing a La0.29Pr0.38Ca0.33MnO3 (LPCM) film on the 0.5 wt % Nb-doped SrTiO3 (STON) substrate, and its properties have been experimentally studied. In addition to fairly good rectifying behavior, the heterojunction exhibits a significant photovoltaic effect. The photovoltage on the two electrodes LPCM and STON increases almost linearly with the power of the laser beam (λ=532 nm) at a rate of ∼0.19 V/W, and no tendency to saturation is observed up to the light power of 100 mW. The lifetime of the extra carriers is between 7 and 9 ms (slightly pulse laser energy dependent), obtained from the decay of photovoltage after shutting down light illumination. The present work shows a great potential of the manganite-based heterojunction as photoelectric devices.