硅酸盐学报2017，Vol.45Issue(4)：542-547,6.DOI:10.14062/j.issn.0454-5648.2017.04.13
NaLaMgTeO6:Eu3+新型红色荧光粉的制备与发光性能
Preparation and Luminescent Properties of Novel Red-emitting Phosphor NaLaMgTeO6:Eu3+
摘要
Abstract
A series of red-emitting phosphors of NaLaMgTeO6:Eu3+ were prepared via the conventional solid-state reaction. The structure and morphology were investigated by X-ray diffraction and field emission scanning electron microscopy. The excitation and emission spectra were measured at 298?473K, and the critical distance for energy transfer, thermal activation energy and CIE chromaticity coordinate were determined. The results indicate that, the phosphors emit an intense red light under the excitation at 397nm or 466nm, corresponding to the5D0→ 7F2 transition of Eu3+. The optimal Eu3+ amount is 40% (in mole fraction), and the concentration quenching is ascribed to the dipole?dipole interaction. Moreover, the photoluminescence exhibits a favorable thermal stability and a high efficiency. In conclusion, NaLaMgTeO6:Eu3+phosphor is a promising material for LED applications.关键词
铕掺杂碲酸钠镧镁/高温固相法/红色荧光粉/发光性能Key words
europium-doped sodium lanthanum magnesium tellurate/solid-state reaction/red-emitting phosphor/luminescent properties分类
数理科学引用本文复制引用
郑庆华,周薇薇,吕兆承,赵旺..NaLaMgTeO6:Eu3+新型红色荧光粉的制备与发光性能[J].硅酸盐学报,2017,45(4):542-547,6.基金项目
国家自然科学基金(61205213,21201071) （61205213,21201071）
安徽省高等学校自然科学研究重点项目(KJ2016A673) （KJ2016A673）
安徽省高校优秀青年人才支持计划重点项目(gxyqZD2016259,gxyqZD2016260) （gxyqZD2016259,gxyqZD2016260）
淮南师范学院科研创新团队建设计划 （）
校级科学研究项目(2015xj11zd,2014xj57). （2015xj11zd,2014xj57）
