Photoluminescence Properties of a New Orange-Red Phosphor Sr4Nb2O9：Sm3+

被引：0

作者：

Meng X. ^{[1
,2
]}

Zhou Q. ^{[1
]}

Xu Y. ^{[1
,2
]}

Liu C. ^{[1
]}

Yang W. ^{[1
]}

Lin X. ^{[1
]}

Wang J. ^{[1
]}

机构：

[1] School of Optoelectronics and Communication Engineering, Xiamen University of Technology, Xiamen

[2] Fujian Provincial Key Laboratory of Optoelectronic Technolo⁃ gy and Devices, Xiamen University of Technology, Xiamen

来源：

Zhongguo Xitu Xuebao/Journal of the Chinese Rare Earth Society | 2023年 / 41卷 / 02期

关键词：

high temperature solid-state reaction; orange-red phosphors; photoluminescence; rare earths; Sr[!sub]4[!/sub]Nb[!sub]2[!/sub]O[!sub]9[!/sub]：Sm[!sup]3+[!/sup; white LED;

D O I：

10.11785/S1000-4343.20230207

中图分类号：

学科分类号：

摘要：

A series of new orange-red phosphors of Sr4-xNb2O9：xSm3+ were synthesized via the high temperature solid state method. The phase structure，photoluminescence and fluorescence decay curves，and thermal stabili‑ ty were used to characterize the phosphors. The results show that Sr4-xNb2O9：xSm3+ phosphors can be effectively excited by near ultraviolet and blue light，and exhibit a strong orange-red light emission band at 607 nm. The concentration quenching mechanism of the samples was studied. And the optimum doping concentration was 0.02. Concentration quenching of photoluminescence in Sr4-xNb2O9：xSm3+ is attributed to the interaction between the electric dipoles of Sm3+ ions. In addition，the thermal stability of the Sr3.98Nb2O9：0.02Sm3+ sample is also dis‑ cussed. The luminescence intensity at 453 K is approximately 89.6% of that at room temperature. Finally，the fluorescence lifetime and CIE of the sample were investigated. It is found that the fluorescence lifetime decreas‑ es with the increase of doping concentration of Sm3+. All samples have the characteristics of low correlated color temperature and high color purity. The results indicate that Sm3+ doped Sr4Nb2O9 orange-red phosphor has poten‑ tial application prospects in the field of solid-state lighting. © 2023 Chinese Society of Rare Earths. All rights reserved.

引用

页码：272 / 278

页数：6

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