Optimizing the performance of thermionic devices using energy filtering

Details Optimizing the performance of thermionic devices using energy filtering Optimizing the performance of thermionic devices using energy filtering

2004-01-21

arxiv.org/abs/cond-mat/0401377v1

J. Phys. D, Vol. 38 pg. 2051 (2005)

Physics

Condensed Matter

Statistical Mechanics

3 pages, 2 figures

Scientific paper

10.1088/0022-3727/38/12/029

Conventional thermionic power generators and refrigerators utilize a barrier in the direction of transport to selectively transmit high-energy electrons. Here we show that the energy spectrum of electrons transmitted in this way is not optimal, and we derive the ideal energy spectrum for operation in the maximum power regime. By using suitable energy filters, such as resonances in quantum dots, the power of thermionic devices can, in principle, be improved by an order of magnitude.

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