Luminescent mechanism of Y2SiO5:Ce phosphor powder

被引：32

作者：

Coetsee, E. ^{[1
]}

Terblans, J. J. ^{[1
]}

Ntwaeaborwa, O. M. ^{[1
]}

Swart, H. C. ^{[1
]}

机构：

[1] Univ Orange Free State, Dept Phys, ZA-9300 Bloemfontein, South Africa

来源：

PHYSICA B-CONDENSED MATTER | 2009年 / 404卷 / 22期

基金：

新加坡国家研究基金会;

关键词：

Y2SiO5:Ce; CL; PL and Gaussian peak fitting; DEGRADATION; CE3+;

D O I：

10.1016/j.physb.2009.09.015

中图分类号：

O469 [凝聚态物理学];

学科分类号：

070205 ;

摘要：

A luminescent mechanism was constructed for the broad band emission spectra of the X-1 phase of the Y2SiO5:Ce phosphor powder. Four Gaussian peaks fit to the cathodoluminescent (CL) and photoluminescent (PL) spectra were attributed to the two different sites (A1 and A2) of the Ce3+ ion in the host matrix and the difference in orientation of the neighbour ions in the complex crystal structure. Each Ce3+ site gives rise to transitions from the 5d to the two (therefore two peaks) 4f energy levels (F-2(5/2) and F-2(7/2) due to crystal field splitting). Energy transfer from other defect levels in the matrix was also observed. (C) 2009 Elsevier B.V. All rights reserved.

引用

页码：4426 / 4430

页数：5

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