Eu3+ and Ce3+ co-doped aluminosilicate glasses and transparent glass-ceramics containing gahnite nanocrystals

被引：16

作者：

Reza Dousti, M. ^{[1
,2
]}

Molla, Atiar R. ^{[3
,4
]}

Rodrigues, Ana Candida M. ^{[3
]}

de Camargo, Andrea S. S. ^{[1
]}

机构：

[1] Univ Sao Paulo, Sao Carlos Phys Inst, BR-13566590 Sao Carlos, SP, Brazil

[2] Univ Fed Alagoas, Phys Inst, BR-57072900 Maceio, AL, Brazil

[3] Univ Fed Sao Carlos, Dept Mat Engn, BR-13565905 Sao Carlos, SP, Brazil

[4] CSIR Cent Glass & Ceram Res Inst, Kolkata 700032, India

来源：

OPTICAL MATERIALS | 2017年 / 69卷

基金：

巴西圣保罗研究基金会;

关键词：

Aluminosilicate glass and glass-ceramics; Eu3+; Ce3+; Gahnite nanocrystals; EUROPIUM(III); FLUORESCENCE; BLUE;

D O I：

10.1016/j.optmat.2017.04.054

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Transparent zinc-aluminosilicate glass-ceramics containing cerium and europium ions were prepared by controlled thermal heating of parent glasses. Addition of CeO2 resulted in the improved transparency of the glasses in the visible spectral region: X-ray diffraction patterns of the glass-ceramics indicate the formation of the crystalline gahnite phase and there are evidences of Ce3+ and Eu3+ occupancies in this phase, as well as co-existence in the amorphous phase. Ce3+ emission corresponding to the allowed f-d transitions is identified, as well as an anomalous emission in the red-infrared region. The characteristic luminescence of Eu3+ in the red is observed. Judd-Ofelt analysis of Eu3+-doped samples reveals enhanced site asymmetry around the ion and a high branching ratio for the 612 nm emission after ceramization. Due to enhanced Ce3+ emission and Eu3+ emission quenching, color tunability is possible in the red to blue spectral region, depending on the heat treatment duration. (C) 2017 Elsevier B.V. All rights reserved.

引用

页码：372 / 377

页数：6

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