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Electronic thermal transport and thermionic cooling in semiconductor multi-quantum-well structures

机译:半导体多量子阱结构中的电子热传输和热电子冷却

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摘要

Recently, it has been proposed that semiconductor or metal-semiconductor multilayer systems can be used as energy generator or cooling devices based on the principles of thermionic emission. Such thermionic cooling devices will have much higher figures of merit than thermoelectric devices. Multilayer thermionic structures have advantages of reduced phonon transport and thus increased thermal efficiency. In this work we present a numerical investigation of the electronic thermal transport in multilayer systems. The figure of merit for different multilayer structures is calculated and optimized to give bias and temperature as a function of work function of the material.
机译:近来,已经提出基于热电子发射原理,半导体或金属-半导体多层系统可以用作能量产生器或冷却装置。这样的热电子冷却装置将具有比热电装置更高的品质因数。多层热电子结构具有减少声子传输并因此提高热效率的优点。在这项工作中,我们提出了多层系统中电子热传输的数值研究。计算并优化了不同多层结构的品质因数,以根据材料的功函数给出偏差和温度。

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