White light emission and bidirectional energy transfer in an Eu3+/Tb3+ co-doped NaLa(WO4)2 phosphor

被引：16

作者：

Jiang, Hong-Xi ^{[1
,2
]}

Lu, Shu-Chen ^{[1
,3
]}

机构：

[1] Harbin Engn Univ, Harbin 150001, Peoples R China

[2] Heilongjiang Univ Sci & Technol, Harbin 150022, Peoples R China

[3] Harbin Normal Univ, Key Lab Photoelect Bandgap Mat, Minist Educ, Harbin 150025, Peoples R China

来源：

MATERIALS RESEARCH BULLETIN | 2021年 / 135卷

关键词：

Energy transfer; Photoluminescence; Phonon-assisted; Nanophosphor powders NaLa(WO4)(2)Eu3+Tb3+; LUMINESCENCE PROPERTIES; TUNABLE LUMINESCENCE; HYDROTHERMAL SYNTHESIS; NEAR-ULTRAVIOLET; EU3+; PHOTOLUMINESCENCE; NANOPARTICLES; TB3+;

D O I：

10.1016/j.materresbull.2020.111123

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Eu3+/Tb3+ co-doped NaLa(WO4)(2) phosphor was synthesized by a hydrothermal process. The structure of the samples were investigated by X-ray diffraction. The photoluminescence spectra, photoluminescence excitation spectra, and fluorescence lifetimes of the samples were measured to investigate the luminescence properties. We analyzed the bidirectional energy transfer processes between Eu3+ and Tb3+ in NaLa(WO4)(2) and gave out the explanations. By adjusting the doping concentrations of Tb3+ and Eu3+, we obtained a phosphor that emits white light. Under the excitation of 382 nm, the chromaticity coordinate of NaLa0.96(WO4)(2):1%Eu3+,3%Tb3+ are (0.31,0.33) and the correlated color temperature is 6472 K, indicating that it can be used as a candidate for white light emission.

引用

页数：7

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