Li+ co-doping effect on the photoluminescence time decay behavior of Y2O3:Er3+ films

被引：14
作者：
Meza-Rocha, A. N. [1 ]
Huerta, E. F. [2 ]
Caldino, U. [2 ]
Zaleta-Alejandre, E. [1 ]
Murrieta S, H. [3 ]
Hernandez, J. M. [3 ]
Camarillo, E. [3 ]
Rivera-Alvarez, Z. [1 ]
Righini, G. C. [4 ,5 ,6 ]
Falcony, C. [1 ]
机构：
[1] IPN, Ctr Invest & Estudios Avanzados, Dept Fis, Mexico City 07360, DF, Mexico
[2] Univ Autonoma Metropolitana Iztapalapa, Dept Fis, Mexico City 09340, DF, Mexico
[3] Univ Nacl Autonoma Mexico, Inst Fis, Mexico City 01000, DF, Mexico
[4] CNR, Inst Fis Applicata Nello Carrara, I-50019 Florence, Italy
[5] Museo Stor Fis, I-00184 Rome, Italy
[6] Ctr Studi & Ric Enrico Fermi, I-00184 Rome, Italy
来源：
JOURNAL OF LUMINESCENCE | 2014年 / 154卷
关键词：
Charge transfer model; Extended lifetimes of Er3+ ions; Enhanced luminescence; Li+ co-doping; ENHANCED LUMINESCENCE PROPERTIES; THIN-FILMS; PHOSPHORS; Y2O3-EU3+; DEFECTS;
D O I：
10.1016/j.jlumin.2014.04.015
中图分类号：
O43 [光学];
学科分类号：
070207 ; 0803 ;
摘要：
The effect of Li+ co-doping on photoluminescence time decay characteristics of Y2O3:Er3+ is reported for films deposited by ultrasonic spray pyrolysis at 500 degrees C. The Er3+ content was fixed at 1.5 at% while the Li+ content in the spraying solution was varied from 1 to 4 at% in relation to Y3+. It is observed that the addition of Li+ content up to 2 at%, besides resulting in an increase of the luminescence emission intensity, modifies the luminescence time decay behavior as well. A simple model in which charge transfer from localized centers to the Er3+ ions is used to describe the evolution with time of the luminescence emission. The introduction of Li+ ions in Y2O3:Er3+ seems to have an impact on the charge transfer process and on the total number of Er3+ ions contributing to the luminescence emission. (C) 2014 Elsevier B.V. All rights reserved.
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收藏
页码：106 / 110
页数：5
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