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Catalytic role of Au in Ni/Au contact on GaN(0001)

Title
Catalytic role of Au in Ni/Au contact on GaN(0001)
Authors
Kim, CCKim, JKLee, JLJe, JHYi, MSNoh, DYHwu, YRuterana, P
POSTECH Authors
Kim, JKLee, JLJe, JH
Date Issued
Jan-2001
Publisher
AMER INST PHYSICS
Abstract
We investigated the structural behavior of the Ni/Au contact on GaN(0001) and found the catalytic role of Au during annealing, using in situ x-ray scattering. The oxidation kinetics of Ni during annealing in air was greatly affected by the presence of Au. The accelerated GaN decomposition and Ni nitride formation during annealing in N-2 also provide evidence of the catalytic role of Au. The results suggest that oxidized Ni/Au ohmic contact exhibit better thermal stability than that of the N-2 annealed Ni/Au contacts. (C) 2001 American Institute of Physics.
URI
http://oasis.postech.ac.kr/handle/2014.oak/19519
ISSN
0003-6951
Article Type
Article
Citation
APPLIED PHYSICS LETTERS, vol. 78, no. 24, page. 3773 - 3775, 2001-01
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 LEE, JONG LAM
Dept of Materials Science & Enginrg
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