Modeling and Performance of Microscale Thermophotovoltaic Energy Conversion Devices
Modeling and Performance of Microscale Thermophotovoltaic Energy Conversion Devices
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DOI：
10.1109/60.986450
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发表时间：
2002-08
期刊：
影响因子：
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通讯作者：
M. Whale;E. G. Gravaiho
中科院分区：
文献类型：
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作者：
M. Whale;E. G. Gravaiho
我们分析了在热光伏器件中利用微尺度辐射传递热能的能量转换器件的可行性。通过使热能源非常接近形成为pn结的接收器，辐射隧穿的近场效应可以增强净功率通量。我们使用波动电动力学的方法来解释微尺度辐射传输的间距效应，它提供了作为发射器和接收器之间的分离的函数的光子到接收器的净传输。我们使用标准的热光伏器件关系计算从微尺度器件输出的功率。基于砷化铟镓的器件的性能的结果表明，可以在效率损失很小的情况下实现功率吞吐量的十倍增加。此外，我们开发了一个模型的微型设备本身，表明半导体带隙能量，载流子寿命和掺杂的影响。
We analyze the feasibility of energy conversion devices that exploit microscale radiative transfer of thermal energy in thermophotovoltaic devices. By bringing a hot source of thermal energy very close to a receiver fashioned as a pn-junction, the near-field effect of radiation tunneling can enhance the net power flux. We use the fluctuational electrodynamic approach to microscale radiative transfer to account for the spacing effect, which provides the net transfer of photons to the receiver as a function of the separation between the emitter and receiver. We calculate the power output from the microscale device using standard thermophotovoltaic device relations. The results for the performance of a device based on indium gallium arsenide indicate that a ten-fold increase in power throughput may be realized with little loss in efficiency. Furthermore, we develop a model of the microscale device itself that indicates the influence of semiconductor band-gap energy, carrier lifetime, and doping.