Blue and red dual emission nanophosphor CaMgSi2O6:Eun+; crystal structure and electronic configuration

被引：37

作者：

Pawar, A. U. ^{[1
]}

Jadhav, Abhijit P. ^{[1
]}

Pal, U. ^{[2
]}

Kim, Byung Kyu ^{[3
]}

Kang, Young Soo ^{[1
]}

机构：

[1] Sogang Univ, Dept Chem, Seoul 121742, South Korea

[2] Univ Autonoma Puebla, Inst Fis Benemerita, Puebla 72570, Pue, Mexico

[3] Pusan Natl Univ, Dept Polymer Sci & Engn, Pusan 609735, South Korea

来源：

JOURNAL OF LUMINESCENCE | 2012年 / 132卷 / 03期

基金：

新加坡国家研究基金会;

关键词：

Dual emission; Solvent effect; CaMgSi2O6:Eun+; Crystal structure; HIGH-PRESSURE; LUMINESCENT PROPERTIES; PHOSPHORS; DIOPSIDE; PHOTOSYNTHESIS; CONVERSION; ORIGIN; DYES; EU2+;

D O I：

10.1016/j.jlumin.2011.09.058

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

Well dispersed Eu doped CaMgSi2O6 (CMS) nanoparticles of 12-19 nm average sizes were synthesized by the co-precipitation method using different ratios of water and ethanol mixture as a solvent and subsequent air annealing. While ethanol as solvent produced pure CMS in monoclinic phase, pure water produced Ca2MgSi2O7 (C2MS) and CMS in the mixed phase. Apart from the composition of CMS and C2MS, concentration and ionization state of the activator depended strongly on the composition (effective dielectric constant) of the solvent. Both the blue and red emission bands could be revealed for the europium activated CMS nanoparticles using single europium precursor. Efficiency of blue and red emissions in the nanophosphors, controlled by the relative abundance of europium in Eu2+ and Eu3+ oxidation states, could be controlled by adjusting the water content in the solvent. The relative intensity of the red emission (615 nm) decreased with the increase of water content in the solvent. (C) 2011 Elsevier B.V. All rights reserved.

引用

页码：659 / 664

页数：6

共 39 条

[1] Self-location of acceptors as "isolated" or "stacked" energy traps in a supramolecular donor self-assembly: A strategy to wavelength tunable FRET emission [J].