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Proceedings Paper

Long-UV excited white-emitting phosphors
Author(s): Gustavo A. Hirata; Justin Carver; Eric J. Bosze; Joanna M. McKittrick
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Paper Abstract

In this work we have developed white-emitting phosphors that can be activated at long UV wavelengths. A blend of EuAlO3:Eu3+ (red), EuAlO3:Eu2+ (green) and Y2SiO5:Ce3+ (blue), prepared by the combustion synthesis technique, yielded a white luminescence spectrum that can be stimulated with long wavelength UV photons. White emission from rare earth doped single-host yttrium oxyorthosilicates, has been also investigated. (Y0.9625Ce0.0075Tb0.03)2SiO5 exhibits an efficient, nearly D65, white emission with chromaticity x=0.225, y=0.320 due to a non-radiative (inductive) energy transfer between Ce3+ and Tb3+.

Paper Details

Date Published: 26 November 2002
PDF: 6 pages
Proc. SPIE 4776, Solid State Lighting II, (26 November 2002); doi: 10.1117/12.469724
Show Author Affiliations
Gustavo A. Hirata, Univ. of California/San Diego (United States)
Univ. Nacional Autonoma de Mexico (Mexico)
Justin Carver, Univ. of California/San Diego (United States)
Eric J. Bosze, Univ. of California/San Diego (United States)
Joanna M. McKittrick, Univ. of California/San Diego (United States)


Published in SPIE Proceedings Vol. 4776:
Solid State Lighting II
Ian T. Ferguson; Nadarajah Narendran; Steven P. DenBaars; Yoon-Soo Park, Editor(s)

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