Localized photo-induced voltage with controlled polarity in single K enriched MoO3 nanobundle
Localized photo-induced voltage with controlled polarity in single K enriched MoO3 nanobundle
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DOI：
10.1088/0957-4484/23/47/475204
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发表时间：
2012-11
期刊：
影响因子：
3.5
通讯作者：
Zhibin Hu;E. Tok;C. Sow
中科院分区：
文献类型：
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作者：
Zhibin Hu;E. Tok;C. Sow
用聚焦激光束照射富钾MoO 3纳米束，研究了单个纳米束的光生电压。在没有外部偏压的情况下，在低激光功率（2.2 mW）下，在单个纳米束中产生显著的光诱导电压（36.5 mV）。值得注意的是，电压的幅度和极性可以通过聚焦激光光斑的位置来控制。不同于常见的光响应来自于杂化纳米材料中的金属-半导体结或PN结，所观察到的光诱导效应来自于纳米束本身，归因于材料的小带隙。
The photo-induced voltage in an individual K enriched MoO3 nanobundle was studied with localized focused laser beam irradiation. Without an external bias voltage, a significant photo-induced voltage (36.5 mV) was produced in a single nanobundle under low laser power (2.2 mW). Remarkably, the amplitude and polarity of the voltage could be controlled by the location of the focused laser spot. Unlike the common photo-response that comes from metal–semiconductor junction or PN junction in hybrid nanomaterial, the observed photo-induced effect is from the nanobundle itself, attributed to the small band gap of the material.