Fluorescence properties of novel near-infrared phosphor CaSc2O4:Ce3+, Nd3+

被引：14
|
作者：
Meng, J. X. [1 ,2 ]
Zhang, F. J. [1 ]
Peng, W. F. [1 ]
Wan, W. J. [1 ]
Xiao, Q. L. [1 ]
Chen, Q. Q. [1 ]
Cao, L. W. [1 ]
Wang, Z. L. [3 ]
机构：
[1] Jinan Univ, Dept Chem, Guangzhou 510632, Guangdong, Peoples R China
[2] Jinan Univ, Inst Nanochem, Guangzhou 510632, Guangdong, Peoples R China
[3] Yunnan Nationalities Univ, Sch Chem & Biotechnol, Kunming 650031, Peoples R China
来源：
JOURNAL OF ALLOYS AND COMPOUNDS | 2010年 / 508卷 / 01期
关键词：
Rare earth compounds; Co-precipitation methods; Near-infrared luminescence; Energy transfer; Sensitization; LIGHT-EMITTING-DIODES; CRYSTAL-STRUCTURE; ENERGY-TRANSFER; COMPLEXES; LUMINESCENCE; EU; LIGAND; IONS; TB;
D O I：
10.1016/j.jallcom.2010.08.064
中图分类号：
O64 [物理化学（理论化学）、化学物理学];
学科分类号：
070304 ; 081704 ;
摘要：
Novel near-infrared (NIR) phosphor, CaSc2O4:Ce3+, Nd3+, was synthesized by co-precipitation method followed by firing at 1300 degrees C in reduced atmosphere. When irradiated with blue light, the phosphor gives strong Nd3+ characteristic NIR emissions in the range of 880-930 nm. The NIR emission intensity gets a 200 times enhancement by co-doping of Ce3+. Detailed investigation on spectrum and fluorescence lifetimes indicated the NIR luminescence enhancement is obtained from an energy transfer process. The process initiates with efficient absorption of blue light by Ce3+ ions via an allowed 4f-5d transition, follow by efficient energy transfer from Ce3+ to Nd3+, and emitting strong Nd3+ characteristic fluorescence. (C) 2010 Elsevier B.V. All rights reserved.
引用
收藏
页码：222 / 225
页数：4
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