Photovoltages and hot electrons in plasmonic nanogaps
Photovoltages and hot electrons in plasmonic nanogaps
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DOI：
10.1117/12.2289114
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发表时间：
2018-01
期刊：
影响因子：
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通讯作者：
D. Natelson;Charlotte I. Evans;P. Zolotavin
中科院分区：
文献类型：
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作者：
D. Natelson;Charlotte I. Evans;P. Zolotavin
在光照下的金属纳米结构中，多种不同的过程可以驱动电流流动，在开环电路配置中，其中一些过程导致开路光伏的产生。在照明波长处具有等离子体共振的结构可以增强光电压响应，这是由于与入射辐射场的相互作用增加，以及通过等离子体激发本身的动力学使过程成为可能。本文综述了连续金属纳米线中由热电效应驱动的光电压响应，以及由热电子产生和隧穿驱动的光电压响应。我们讨论了通过局部等离子共振和传播表面等离子激元相结合来增强和量化热电子产生和响应的前景。
In metal nanostructures under illumination, multiple different processes can drive current flow, and in an opencircuit configuration some of these processes lead to the production of open-circuit photovoltages. Structures that have plasmonic resonances at the illumination wavelength can have enhanced photovoltage response, due to both increased interactions with the incident radiation field, and processes made possible through the dynamics of the plasmon excitations themselves. Here we review photovoltage response driven by thermoelectric effects in continuous metal nanowires and photovoltage response driven by hot electron production and tunneling. We discuss the prospects for enhancing and quantifying hot electron generation and response via the combination of local plasmonic resonances and propagating surface plasmon polaritons.