Enhancing quantum efficiency and thermal stability in Gd2SrAl2O7: Mn4+, Bi3+, Na+ far-red emitting phosphor by energy transfer and cation substitution strategy for indoor plant growth LED lighting

被引：15

作者：

Yan, Yifeng ^{[1
]}

Luo, Chaolian ^{[1
]}

Ling, Shaokun ^{[1
]}

Liang, Jie ^{[1
]}

Liao, Sen ^{[1
,2
,3
]}

Huang, Yingheng ^{[1
]}

机构：

[1] Guangxi Univ, Sch Resources Environm & Mat, Nanning 530004, Guangxi, Peoples R China

[2] Guangxi Univ, Sch Chem & Chem Engn, Nanning 530004, Guangxi, Peoples R China

[3] Guangxi Univ, Sch Resources Environm & Mat, Nanning, Guangxi, Peoples R China

来源：

JOURNAL OF ALLOYS AND COMPOUNDS | 2023年 / 947卷

基金：

中国国家自然科学基金;

关键词：

Phosphor; Bi3+-Mn4+energy transfer; Luminescence thermal stability; Cation substitution; CO-DOPED LA2MGGEO6; PHOTOLUMINESCENCE PROPERTIES; LUMINESCENCE PROPERTIES; COLOR; PHOTORECEPTORS; PERFORMANCE; EMISSIONS; YB3+; ND; LA;

D O I：

10.1016/j.jallcom.2023.169609

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

In this work, we synthesized a series of Gd2SrAl2O7: Mn4+/Bi3+/Na+phosphors by sol-gel method. The ex-perimental results show that there is energy transfer from Bi3+ to Mn4+. By introducing Bi3+ and Na+ ions into the host, emission intensity of the optimal phosphor can be increased to 2.5 times that of Gd2SrAl2O7: Mn4+ and its internal quantum yield is as high as 79.9%. Furthermore, the optimal phosphor also exhibits satisfactory luminescence thermal stability, whose PL intensity at 423 K retained 80.2% of that at room temperature and the activation energy reaches up to 0.45 eV. Mechanism of photoluminescence im-provement can be attributed to efficient energy transfer, charge compensation and enhanced crystal ri-gidity. Packaged LED device exhibits dazzle far red light and its PL spectrum widely overlaps with the absorption band of phytochrome PFR. The performance indexes support the prospective application of the optimal phosphor in plant growth lighting.(c) 2023 Elsevier B.V. All rights reserved.

引用

页数：13