Development of two novel Eu2+-activated phosphors in the Na-Sc-Si-O system and their photoluminescence properties

被引：3
|
作者：
Min, Jihong [1 ]
Yamaguchi, Taichi [1 ]
Kato, Hideki [1 ]
Kobayashi, Makoto [1 ]
Yamane, Hisanori [1 ]
Kakihana, Masato [1 ]
机构：
[1] Tohoku Univ, Inst Multidisciplinaiy Res Adv Mat, Aoba Ku, Sendai, Miyagi 9808577, Japan
来源：
JOURNAL OF LUMINESCENCE | 2014年 / 154卷
关键词：
Na3ScSi3O9; NaScSi2O6; Solution method; Parallel synthesis; LIGHT-EMITTING-DIODES; FLUORESCENCE; EU2+;
D O I：
10.1016/j.jlumin.2014.05.006
中图分类号：
O43 [光学];
学科分类号：
070207 ; 0803 ;
摘要：
Two novel Eu2+-activated phosphors in the Na-Sc-Si-O system were developed in this study, NaScSi2O6:Eu and Na3ScSi3O9:Eu. NaScSi2O6:Eu2+ showed yellow emission with a peak at 555 nm under excitation at 220-430 nm. When flux-treatment was performed for NaScSi2O6:Eu2+, we found the existence of a new phase. We then succeeded in synthesis of a high-purity sample of this new compound by a parallel solution synthesis method. It was revealed that the new phase was Na3ScSi3O9 with isostructure to Na3YSi3O9, and Eu2+-activated Na3ScSi3O9 exhibited photoluminescence. Na3ScSi3O9:Eu showed green emission with a peak at 530 nm and a corresponding broad excitation band up to 500 nm. However, photoluminescence of Eu2+ was negligible for Na3YSi3O9:Eu because of the stabilization of Eu3+ at the Y3+ site. (C) 2014 Elsevier B.V. All rights reserved.
引用
收藏
页码：285 / 289
页数：5
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