AN ENERGY TRANSPORT MODEL FOR HBTS USING ENERGY‐ AND COMPOSITION‐DEPENDENT TRANSPORT PARAMETERS
ISSN: 0332-1649
Article publication date: 1 April 1994
Abstract
In this paper, we describe an energy transport simulation method for graded AlGaAs/GaAs HBTs, which uses Al composition‐, doping density‐, and energy‐dependent transport parameters estimated by a Monte Carlo method. For several representative Al composition x and doping densities, parameters such as electron mobility, energy relaxation time and upper valley fraction are evaluated as a function of electron energy. For the other x, these are determined by linear extraporation. The problem of this extraporation method is also described. Calculated cutoff frequency characteristics and electron velocity profiles are compared with those by using more simplified approaches, indicating the importance of using adequate transport parameters.
Citation
Horio, K. and Nakatani, A. (1994), "AN ENERGY TRANSPORT MODEL FOR HBTS USING ENERGY‐ AND COMPOSITION‐DEPENDENT TRANSPORT PARAMETERS", COMPEL - The international journal for computation and mathematics in electrical and electronic engineering, Vol. 13 No. 4, pp. 567-577. https://doi.org/10.1108/eb051876
Publisher
:MCB UP Ltd
Copyright © 1994, MCB UP Limited