Long-UV excited white-emitting phosphors

Gustavo A. Hirata; Justin Carver; Eric J. Bosze; Joanna M. McKittrick

doi:10.1117/12.469724

26 November 2002 Long-UV excited white-emitting phosphors

Gustavo A. Hirata, Justin Carver, Eric J. Bosze, Joanna M. McKittrick

Proceedings Volume 4776, Solid State Lighting II; (2002) https://doi.org/10.1117/12.469724
Event: International Symposium on Optical Science and Technology, 2002, Seattle, WA, United States

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. (Y_0.9625Ce_0.0075Tb_0.03)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⁺.

Citation Download Citation

Gustavo A. Hirata, Justin Carver, Eric J. Bosze, and Joanna M. McKittrick "Long-UV excited white-emitting phosphors", Proc. SPIE 4776, Solid State Lighting II, (26 November 2002); https://doi.org/10.1117/12.469724

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