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Caughey-Thomas parameters for electron mobility calculations in GaAs

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2 Author(s)
C. M. Maziar ; Purdue University, School of Electrical Engineering, West Lafayette, USA ; M. S. Lundstrom

The Caughey-Thomas expression, an empirically derived formulation for carrier mobility, is used here to relate carrier compensation to electron mobility. A set of equations expressing the Caughey-Thomas parameters as functions of the compensation ratio are presented. Use of these expressions reproduces results of theoretical low-field mobility computations and provides a simple means of incorporating effects of carrier compensation as well as concentration in device analysis programs.

Published in:

Electronics Letters  (Volume:22 ,  Issue: 11 )