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Chemical Effects of substrate Temperature and Feed Gas Composition on Ion Beam Deposited AlN and AlN:H

Published online by Cambridge University Press:  21 February 2011

L. Huang
Affiliation:
Materials Science Program, Washington State University, Pullman, WA 99164-4620, USA
X. D. Wang
Affiliation:
Materials Science Program, Washington State University, Pullman, WA 99164-4620, USA
K. W. Hipps
Affiliation:
Materials Science Program, Washington State University, Pullman, WA 99164-4620, USA
U. Mazur
Affiliation:
Materials Science Program, Washington State University, Pullman, WA 99164-4620, USA
J. T. Dickinson
Affiliation:
Materials Science Program, Washington State University, Pullman, WA 99164-4620, USA
R. Heffron
Affiliation:
Materials Science Program, Washington State University, Pullman, WA 99164-4620, USA
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Abstract

Direct ion beam sputter deposition of alN is studied using both pure nitrogen and a 75% N2/25% H2 mixture as the feed gas for the ion gun. the chemical characteristics of these films are probed using infrared spectroscopy and chemical etching. the presence of al-N2 species is associated with reactive and highly defective films. the presence of NHX species increases by several orders of magnitude the rate at which alN film are etched by base. However, stoichiometric and low defect alN films prepared by depositing alN:H onto substrates heated to 200 °C have reactivities similar to the best alN films produced in the absence of hydrogen.

Type
Research Article
Copyright
Copyright © Materials Research Society 1995

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