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Eu-doped Y2O3 phosphor films produced by electrostatic-assisted chemical vapor deposition

Published online by Cambridge University Press:  31 January 2011

K. L. Choy ,
J. P. Feist ,
A. L. Heyes  and
B. Su
K. L. Choy*
Affiliation:
Department of Materials, Imperial College of Science, Technology and Medicine, Prince Consort Road, London SW7 2BP, United Kingdom
J. P. Feist
Affiliation:
Department of Mechanical Engineering, Imperial College of Science, Technology and Medicine, Prince Consort Road, London SW7 2BP, United Kingdom
A. L. Heyes
Affiliation:
Department of Mechanical Engineering, Imperial College of Science, Technology and Medicine, Prince Consort Road, London SW7 2BP, United Kingdom
B. Su
Affiliation:
Department of Materials, Imperial College of Science, Technology and Medicine, Prince Consort Road, London SW7 2BP, United Kingdom
*
a) Address all correspondence to this author. e-mail: k.choy@ic.ac.uk
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Abstract

Europium-doped yttrium oxide (Y2O3:Eu) thermographic phosphor films were deposited on Ni-alloy substrates using a novel and cost-effective electrostatic-assisted chemical vapor deposition (EACVD) technique. The thermoluminescence properties were studied under irradiation by an ultraviolet laser. It was found that crystallized Y2O3: Eu films could be deposited at a temperature as low as 550 °C. Annealing of the as-deposited films at higher temperatures (>1000 °C) improved the luminescence properties due to further crystallization processes. The correlation of the lifetime decay and temperature change of the films showed that the EACVD-deposited films are suitable for use in phosphor thermometry for high-temperature applications.

Type
Articles
Information
Journal of Materials Research , Volume 14 , Issue 7 , July 1999 , pp. 3111 - 3114
Copyright
Copyright © Materials Research Society 1999

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References

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