论文标题
扫描光电流图中的热力学互惠
Thermodynamic reciprocity in scanning photocurrent maps
论文作者
论文摘要
不均匀材料中的扫描光电流图包含非平凡的模式，通常只能通过设备几何形状和不均匀性的完整模型来理解这些图案。我们评论了线性响应中Onsager互惠对光电流的后果，并在光伏和光热效应中立即应用。特别是在光热效应的情况下，我们发现每瓦的一次性响应率完全由peltier诱导的温度偏移在同一设备中的温度变化来控制，当时偏移和电压偏置。我们以石墨烯为例表明，该原理有助于理解和建模光电流图。
Scanning photocurrent maps in inhomogeneous materials contain nontrivial patterns, which often can only be understood with a full model of device geometry and nonuniformities. We remark on the consequences of Onsager reciprocity to the photocurrent in linear response, with immediate applications in photovoltaic and photothermoelectric effects. In particular with photothermoelectric effects, we find that the ampere-per-watt responsivity is exactly governed by Peltier-induced temperature shifts in the same device when time-reversed and voltage-biased. We show, with the example of graphene, that this principle aids in understanding and modelling of photocurrent maps.
