Synthesis, optical properties, and packaging of Dy3+ doped Y2WO6, Y2W3O12, and Y6WO12 phosphors

被引：42

作者：

Cao, Chunyan ^{[1
]}

Wei, Shoujin ^{[1
]}

Zhu, Yongxing ^{[1
]}

Liu, Tao ^{[1
]}

Xie, An ^{[1
]}

Noh, Hyeon Mi ^{[2
]}

Jeong, Jung Hyun ^{[2
]}

机构：

[1] Xiamen Univ Technol, Sch Mat Sci & Engn, Fujian Key Lab Funct Mat & Applicat, Xiamen 361024, Peoples R China

[2] Pukyong Natl Univ, Dept Phys, Busan 608737, South Korea

来源：

MATERIALS RESEARCH BULLETIN | 2020年 / 126卷

基金：

新加坡国家研究基金会;

关键词：

Phosphors; Optical properties; Dy3+; WLED; LUMINESCENCE PROPERTIES; CRYSTAL-STRUCTURE; SINGLE-PHASE; TEMPERATURE; NANOPARTICLES;

D O I：

10.1016/j.materresbull.2020.110846

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Through a solid-state reaction method, Dy3+ doped monoclinic phase of Y2WO6, Y2W3O12, and hexagonal phase of Y6WO12 phosphors were synthesized. The Y2WO6 and Y2W3O12 were composed of micrometre-scale particles, and the Y6WO12 was composed of nanometre particles. The energy-dispersive spectra (EDS) suggested that the atom ratio of Y to W decreased with the sequence of Y6WO12, Y2WO6, and Y2W3O12 phosphors. The E g values were calculated based on the diffuse reflection (DR) spectra. The Dy3+ doped Y2WO6 phosphor had the most intense photoluminescence (PL) intensities and the optimal doping concentration was 2 mol%. The energy transfer efficiency from WO66- to Dy3+ was calculated. The lifetime of F-4(9/2)-> H-6(13/2) transition of Dy3+ was a few hundred nanoseconds. At 150 degrees C, the 2 mol% Dy3+ doped Y2WO6 phosphor kept 74 % intensity of 50 degrees C. The white light emitting diode (WLED) devices were fabricated by combining phosphors with 308 nm LED chips.

引用

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