In this paper, we propose van del Waals heterostructure-based thermionic devices for the applications in cooling and power generation in the temperature range of 300 to 400 K. By using two-dimensional materials of low cross-plane thermal conductivity as the barrier materials and graphene as electrodes, our calculation demonstrates that our proposed device will have a higher efficiency as compared to other methods such as thermoelectric device and the traditional thermionic devices. By using the parameters within the current technology, we predict a cooling capability at more than 50% of the Carnot efficiency, and a 10 to 20 % efficiency in harvesting the wasted heat at 400 K.
@article{arxiv.1503.08325,
title = {High-Efficiency Van Der Waals heterostructure Thermionic Device With Graphene Electrodes},
author = {Shi-Jun Liang and Lay Kee Ang},
journal= {arXiv preprint arXiv:1503.08325},
year = {2015}
}
Comments
This paper has been withdrawn by the author due to incomplete information