Luminescent properties of Eu3＋ doped NaY（WO4）2 nanophosphors prepared by molten salt method

Tetragonal phase NaY（WO4）2：Eu3＋phosphors were synthesized through a molten salt method. The X-ray powder diffraction （XRD） and field emission scanning electron microscopy （FE-SEM） were utilized to characterize the crystal structure and mor- phology. The emission and excited spectra were used to stud...

Full description

Saved in:
Bibliographic Details
Published in:中国稀土学报：英文版 2015, Vol.33 (9), p.915-921
Main Author: 刘婷 孟庆裕 孙文军
Format: Article
Language:English
Subjects:
NaY
X射线粉末衍射
制备
发光性能
场发射扫描电子显微镜
掺杂
熔盐法
纳米
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:Tetragonal phase NaY（WO4）2：Eu3＋phosphors were synthesized through a molten salt method. The X-ray powder diffraction （XRD） and field emission scanning electron microscopy （FE-SEM） were utilized to characterize the crystal structure and mor- phology. The emission and excited spectra were used to study the photoluminescence properties. The results of XRD and FE-SEM indicated that the samples prepared by this method were pure phase and the particle size was about 50 nm. The PL results showed that Eu3＋ 5D0--7F2 red luminescence at 616.5 nm could be excited by 394.5 nm near-UV light and 465 nm blue light in NaY（WO4）2host effectively, and the quenching concentration was 30 mol.%. The critical energy transfer distance and J-O parameters were calculated. The energy transfer type between Eu3＋was proved. What＇s more, the quantum efficieneies of the 5D0 level of Eu3＋ were calculated as well.
ISSN:1002-0721
2509-4963