Nonequilibrium transport in GaAs Schottky mixers at 2.5 THz

19th International Conference on Electron Dynamics in Semiconductors, Optoelectronics and Nanostructures

Pardo, D.^1 ; Grajal, J.^1 ; Pérez, S.^2

Department of Signal, Systems and Radiocommunications, Technical University of Madrid, Av. Complutense 30, Madrid

28040, Spain^1

Department of Applied Physics, University of Salamanca, Plaza de la Merced s/n, Salamanca

37008, Spain^2

关键词: Harmonic balance techniques;    Intervalley transition;    Monte Carlo model;    Noise performance;    Nonequilibrium transport;    Schottky;    Self-consistent simulations;   

Others  :  https://iopscience.iop.org/article/10.1088/1742-6596/647/1/012038/pdf
DOI  :  10.1088/1742-6596/647/1/012038

来源: IOP

【 摘 要 】

This work presents an analysis of the electrical and the noise performances of a 2.5 THz mixer. Reliable and self-consistent simulations of the circuit are carried out by means of a Monte Carlo model of the diode coupled to a harmonic balance technique. Simulations with this tool have shown that hot electrons and intervalley transitions can highly degrade the performance of this mixer. Additionally, these phenomena can be mitigated by decreasing the epilayer length of the diode.