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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

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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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