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Multicolor Luminescence from Ca3Y2(SiO4)3:Eu2+,Eu3+ Material

Published online by Cambridge University Press:  23 June 2011

Anna Dobrowolska  and
Eugeniusz Zych
Anna Dobrowolska
Affiliation:
Faculty of Chemistry, University of Wroclaw 14 F. Joliot-Curie Street 50-383 Wroclaw, Poland
Eugeniusz Zych
Affiliation:
Faculty of Chemistry, University of Wroclaw 14 F. Joliot-Curie Street 50-383 Wroclaw, Poland
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Abstract

Ca3Y2(SiO4)3 powder activated with Eu was prepared with ceramic method. Its spectroscopic properties in VUV-UV-Vis region together with structure and morphology were analyzed. Luminescence measurements indicated that Ca3Y2(SiO4)3 prepared in a reducing atmosphere contained both Eu2+ and Eu3+ ions. The excitation could be tuned to generate a complex luminescence consisting of a broad band related to a blue-greenish 5d → 4f emission of Eu2+ and 4f → 4f red luminescence of Eu3+. Their superposition covered the whole visible part of spectrum and appeared almost white among others upon excitation around 390 nm.

Keywords

defectsEuluminescence
Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 1342: Symposium V – Rare-Earth Doping of Advanced Materials for Photonic Applications , 2011 , mrss11-1342-v03-21
Copyright
Copyright © Materials Research Society 2011

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