Enhanced non-equilibrium Peltier cooling through electron gas expansion: A Monte Carlo simulation study

被引：0
|
作者：
Zebarjadi, Mona [1 ,2 ]
Tonni, Farjana Ferdous [1 ]
Yazawa, Kazuaki [3 ]
Shakouri, Ali [3 ]
机构：
[1] Department of Electrical and Computer Engineering, University of Virginia, Charlottesville,VA,22904, United States
[2] Department of Materials Science and Engineering, University of Virginia, Charlottesville,VA,22904, United States
[3] Birck Nanotechnology Center, Purdue University, 1205 Mitch Daniels Blvd, West Lafayette,IN,47907, United States
来源：
Materials Today Physics | 2024年 / 48卷
关键词：
D O I：
10.1016/j.mtphys.2024.101561
中图分类号：
TN3 [半导体技术]; TN4 [微电子学、集成电路（IC）];
学科分类号：
0805 ; 080501 ; 080502 ; 080903 ; 1401 ;
摘要：
We demonstrate enhanced Peltier cooling at the nanoscale using geometrical constriction. This nozzle structure leads to electron expansion under an applied bias, which in turn results in additional cooling. This extra cooling enhances the overall Peltier effect when the electrons are out of equilibrium with the lattice. An ensemble Monte Carlo simulation is used to demonstrate the non-equilibrium expansion of an electron gas using nanoscale trapezoidal geometric confinement. The proposed device operates under steady-state conditions, providing enhanced cooling compared to a one-dimensional flat geometry. We observe a five-fold increase in both the maximum cooling temperature and cooling power density, reaching more than 5 kW/cm2, when comparing the trapezoidal geometry to the regular flat geometry. © 2024
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