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Type: Artigo de periódico
Title: Mobility in n-doped wurtzite III-Nitrides
Author: Rodrigues, C.G.
Freire, Valder N.
Vasconcellos, Áurea R.
Luzzi, Roberto
Abstract: A study of the mobility of n-doped wurtzite III-Nitrides is reported. We have determined the nonequilibrium thermodynamic state of the III-Nitrides systems driven far away from equilibrium by a strong electric field in the steady state, which follows after a very fast transient. The dependence of the mobility (which depends on the nonequilibrium thermodynamic state of the sample) on the electric field strength is derived, which decreases with the strength of electric field. We analyzed the contributions to the mobility arising out of the different channels of electron scattering, namely, the polar optic, deformation, piezoelectric, interactions with the phonons, and with impurities. The case of n-InN, n-GaN, and n-AlN have been analyzed: as expected the main contribution comes from the polar-optic interactions in these strongly polar semiconductors. The other interactions are in decreasing order, the deformation acoustic, the piezoelectric, and the one due to impurities.
Subject: conductivity phenomena in semiconductors
scattering mechanisms
Editor: ABM, ABC, ABPol
Rights: aberto
Identifier DOI: 10.1590/S1516-14392003000100002
Date Issue: 1-Jan-2003
Appears in Collections:Artigos e Materiais de Revistas Científicas - Unicamp

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