Influence of Al3+ Doping into the Zr4+ Site on the Photoluminescence Properties of Ca3-xEuxZrSi2O9+x/2 Phosphors

May 22, 2018

Title

Influence of Al3+ Doping into the Zr4+ Site on the Photoluminescence Properties of Ca3-xEuxZrSi2O9+x/2 Phosphors

Author

Yikang Zuo, Sun Woog Kim, Toshiyuki Masui, Nobuhito Imanaka

Year

2014

Journal

ECS Journal of Solid State Science and Technology

Abstract

Red-emitting Ca3−xEuxZr1−yAlySi2O9+(x−y)/2 (0.05 ≤ x ≤ 0.25, 0 ≤ y ≤ 0.07) phosphors were synthesized in a single phase form by the conventional solid-state reaction method and their photoluminescence properties were characterized. The charge-transfer efficiency from O2− to Eu3+ was controlled by the Al3+ doping into the Zr4+ site in the host Ca3ZrSi2O9 lattice, which resulted in the successful enhancement of the luminescent emission intensity of these phosphors. The highest emission intensity was obtained for Ca2.88Eu0.12Zr0.95Al0.05Si2O9.035, where the relative emission intensity of this phosphor was 94% compared with that of a commercial Y1.94Eu0.06O3phosphor.

Instrument

FP-8500

Keywords

Fluorescence, Photoluminescence, Optical properties