Broadband near-infrared luminescence and energy transfer of Cr3+, Ce3+ co-doped Ca2LuHf2Al3O12 phosphors

被引：74

作者：

Wu, Jinpin ^{[1
,2
,3
]}

Zhuang, Weidong ^{[1
,2
,3
]}

Liu, Ronghui ^{[1
,2
,3
]}

Liu, Yuanhong ^{[1
,2
,3
]}

Gao, Tongyu ^{[1
,2
,3
]}

Yan, Chunpei ^{[4
]}

Cao, Min ^{[1
,2
,3
]}

Tian, Junhang ^{[1
,2
,3
]}

Chen, Xiaoxia ^{[1
,2
,3
]}

机构：

[1] GRINM Grp Co Ltd, Natl Engn Res Ctr Rare Earth Mat, Beijing 100088, Peoples R China

[2] GRIREM Adv Mat Co Ltd, Beijing 100088, Peoples R China

[3] Gen Res Inst Nonferrous Met, Beijing 100088, Peoples R China

[4] East China Univ Technol, Sch Chem Biol & Mat Sci, Jiangxi Prov Key Lab Polymer Micronano Mfg & Devi, Nanchang 330046, Jiangxi, Peoples R China

来源：

JOURNAL OF RARE EARTHS | 2021年 / 39卷 / 03期

关键词：

Broadband near-infrared; Energy transfer; Garnet phosphor; Rare earths;

D O I：

10.1016/j.jre.2020.05.008

中图分类号：

O69 [应用化学];

学科分类号：

081704 ;

摘要：

Broadband near-infrared phosphors are highly desirable for food testing. Targeted Ca2LuHf2Al3O12:Cr3+ (CLHA:Cr3+) and Ca2LuHf2Al3O12:Ce3+,Cr3+ (CLHA:Ce3+, Cr3+) phosphors were synthesized by the conventional high-temperature solid state reaction. The CLHA:Cr(3+ )phosphor, with a good thermal stability, shows a red shift owing to radiation reabsorption and non-radiative transition with increasing Cr3+ content. For co-doped sample, the emission intensity of Cr3+ can be enhanced by three times due to the energy transfer from Ce3+ to Cr3+, which can be evidenced by a significant overlap between the PLE of Cr3+ single-doped phosphor and the PL of Ce3+ single-doped phosphor. In addition, the mechanism of energy transfer is identified as a quadrupole-quadrupole interaction according to decay lifetime and Dexter's energy transfer formula. The broadband NIR emission peaked at 775 nm of CLHA:Cr3+,Ce3+ phosphor shows a bright prospect in nondestructive quality-control analysis systems for food. (C) 2020 Published by Elsevier B.V. on behalf of Chinese Society of Rare Earths.

引用

页码：269 / 276

页数：8

共 41 条

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