Heat-flux control and solid-state cooling by regulating chemical potential of photons in near-field electromagnetic heat transfer
Heat-flux control and solid-state cooling by regulating chemical potential of photons in near-field electromagnetic heat transfer
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DOI：
10.1103/physrevb.91.134301
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发表时间：
2015-04-13
影响因子：
3.7
通讯作者：
Fan, Shanhui
中科院分区：
文献类型：
--
作者：
Chen, Kaifeng;Santhanam, Parthiban;Fan, Shanhui
我们考虑具有光子非零化学势的近场传热，就像可以发生在两个半导体体之间一样，保持在不同的温度下，至少有一个体在外部偏置下。我们表明，辐射热流通量对化学势的依赖使电子控制两个物体之间近场传热的方向和大小成为可能。此外，这种结构可以作为固态冷却装置运行，其效率在理想情况下可以接近卡诺极限。在存在固有非理想性的情况下，包括俄歇复合和寄生声子-极化子传热，也可以实现显著的冷却。
We consider near-field heat transfer with nonzero chemical potential for photons, as can occur between two semiconductor bodies, held at different temperatures with at least one of the bodies under external bias. We show that the dependence of radiative heat flux on chemical potential enables electronic control of both the direction and magnitude of near-field heat transfer between the two bodies. Moreover such a configuration can operate as a solid-state cooling device whose efficiency can approach the Carnot limit in the ideal case. Significant cooling can also be achieved in the presence of inherent nonidealities including Auger recombination and parasitic phonon-polariton heat transfer.