论文标题
用藻类销连接连接非辐射损失，用于近场的热粒子能量收获
Overcoming non-radiative losses with AlGaAs PIN junctions for near-field thermophotonic energy harvesting
论文作者
论文摘要
在能量收获构型中使用的热噬型设备中，热发光二极管（LED）通过电发光辐射耦合到光伏（PV）电池，以产生电力。使用波动电动力学和漂移扩散方程，我们优化了由藻类引脚LED制成的设备和具有匹配带盖的GAAS PIN PV细胞。我们发现，LED只能在近场的有效热泵中起作用，在近场中，波浪隧道增加了辐射传热。一个关键原因是，与该制度中的辐射性重组率相比，非辐射重组率降低了。在10 nm的间隙距离和100 cm.s-1有效的表面重组速度下，功率输出可以达到2.2 w.cm -2，对于600 K LED，这突出了低级能量收集的潜力。
In a thermophotonic device used in an energy-harvesting configuration, a hot light-emitting diode (LED) is coupled to a photovoltaic (PV) cell by means of electroluminescent radiation in order to produce electrical power. Using fluctuational electrodynamics and the drift-diffusion equations, we optimise a device made of an AlGaAs PIN LED and a GaAs PIN PV cell with matched bandgaps. We find that the LED can work as an efficient heat pump only in the near field, where radiative heat transfer is increased by wave tunnelling. A key reason is that non-radiative recombination rates are reduced compared to radiative ones in this regime. At 10 nm gap distance and for 100 cm.s --1 effective surface recombination velocity, the power output can reach 2.2 W.cm --2 for a 600 K LED, which highlights the potential for low-grade energy harvesting.
