Synthesis and photoluminescence of Ca3Si3O8F2: Ce4+, Eu3+, Tb3+ phosphor

被引：0

作者：

Suresh, K. ^{[1
]}

PoornachandraRao, Nannapaneni V. ^{[2
]}

Murthy, K. V. R. ^{[3
]}

机构：

[1] CSR Sarma Coll, Dept Phys, Ongole 523001, AP, India

[2] Rajiv Gandhi Univ Knowledge Technol, Dept Phys, IIIT, Basara 504101, AP, India

[3] Maharaja Sayajirao Univ Baroda, Fac Engn & Technol, Dept Appl Phys, Vadodara 390001, India

来源：

ADVANCES IN MATERIALS RESEARCH-AN INTERNATIONAL JOURNAL | 2014年 / 3卷 / 04期

关键词：

luminescence; phosphor; solid state reaction; raw materials; activators; LED;

D O I：

10.12989/amr.2014.3.4.227

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Ce4+, Eu3+, Tb3+ co-doped Ca3Si3O8F2 phosphor was synthesized via solid state reaction method using CaF2, CaCO3 and SiO2 as raw materials for the host and Eu2O3, CeO2, and Tb4O7 as activators. The luminescent properties of the phosphor was analysed by spectrofluorophotometer at room temperature. The effect of excitation wavelengths on the luminescent properties of the phosphor i. e. under near-ultraviolet (nUV) and visible excitations was investigated. The emission peaks of Ce4+, Eu3+, Tb3+ co-doped Ca3Si3O8F2 phosphor lays at 480(blue band), 550(green band) and 611nm (red band) under 380nm excitation wavelength, attributed to the Ce4+ ion, Tb3+ ion and Eu3+ ions respectively. The results reveal that the phosphor emits white light upon nUV (380nm) / visible (465nm) illumination, and a red light upon 395nm / 535nm illumination. RE ions doped Ca3Si3O8F2 is a promising white light phosphor for LEDs. The emission colours can be seen using Commission international de l'eclairage (CIE) co-ordinates. A single host phosphor emitting different colours under different excitations indicates that it is a potential phosphor having applications in many fields.

引用

页码：227 / 232

页数：6

共 9 条

[1] Effects of fluxes on the synthesis of Ca3Sc2Si3O12:Ce3+ green phosphors for white light-emitting diodes [J].