Luminescent and thermal properties of a novel double perovskite La2MgTiO6:Dy3+ phosphors for w-LEDs application

被引：7

作者：

Long, Juling ^{[1
]}

Xu, Yamin ^{[1
]}

Cheng, Kang ^{[1
]}

Liu, Xinyue ^{[1
]}

Huang, Weichao ^{[1
]}

Deng, Chaoyong ^{[1
]}

机构：

[1] Guizhou Univ, Coll Big Data & Informat Engn, Key Lab Funct Composite Mat Guizhou Prov, Guiyang 550025, Guizhou, Peoples R China

来源：

JOURNAL OF MATERIALS SCIENCE-MATERIALS IN ELECTRONICS | 2023年 / 34卷 / 05期

基金：

中国国家自然科学基金;

关键词：

RED PHOSPHOR; WHITE; PHOTOLUMINESCENCE; EMISSION; GLASS; BAND;

D O I：

10.1007/s10854-022-09754-w

中图分类号：

TM [电工技术]; TN [电子技术、通信技术];

学科分类号：

0808 ; 0809 ;

摘要：

A novel yellow emitting double perovskite La2MgTiO6:Dy3+ phosphor was synthesized by a high-temperature solid-phase method. The emission spectra of La2MgTiO6:Dy3+ phosphor show three emission bands at 479 nm (blue), 573 nm (yellow), and 668 nm (red) at 351 nm excitation owing to the F-4(9/2)-H-6(15/2), F-4(9/2)-H-6(13/2), and F-4(9/2)-H-6(11/2) energy level jumps of Dy3+ ions, respectively. The concentration quenching of the phosphor sample at x = 0.07 mol is caused by dipole-dipole interaction. La2MgTiO6: Dy3+ phosphor has superior thermal stability with a luminous intensity of 85.6% at 423 K. The activation energy of the Dy3+ ion is 0.18 eV. The Commission Internationale de I'Eclairage (CIE) coordinates for the phosphors were calculated in the white light region, and the correlated color temperature (CCT) values are in the range of 4376-4586 K for warm white light. The results show that La2MgTiO6:Dy3+ phosphors may be a potential for application in w-LEDs.

引用

页数：10

共 42 条

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