Broadband UV-Excitation and Red/Far-Red Emission Materials for Plant Growth: Tunable Spectrum Conversion in Eu3+,Mn4+Co-doped LaAl0.7Ga0.3O3 Phosphors

被引：32

作者：

Ding, Fan ^{[1
,2
]}

Zhou, Yiqing ^{[1
,2
]}

He, Yue ^{[1
,2
]}

Liang, Yuanyuan ^{[1
,2
]}

Luo, Peilan ^{[1
,2
]}

Zhou, Wenli ^{[1
,2
]}

Zhang, Jilin ^{[1
,2
]}

Yu, Liping ^{[1
,2
]}

Qiu, Zhongxian ^{[1
,2
]}

Lian, Shixun ^{[1
,2
]}

机构：

[1] Minist Educ, Hunan Prov Coll, Key Lab Light Energy Convers Mat, Key Lab Chem Biol & Tradit Chinese Med Res, Changsha 410081, Hunan, Peoples R China

[2] Hunan Normal Univ, Coll Chem & Chem Engn, Changsha 410081, Hunan, Peoples R China

来源：

INORGANIC CHEMISTRY | 2023年 / 62卷 / 07期

基金：

中国国家自然科学基金;

关键词：

LUMINESCENCE PROPERTIES; HIGHLY LUMINESCENT; LIGHT; PEROVSKITE;

D O I：

10.1021/acs.inorgchem.2c04022

中图分类号：

O61 [无机化学];

学科分类号：

070301 ; 081704 ;

摘要：

Broadband ultraviolet (UV) excitation and red/far-red emission phosphors can effectively convert solar spectrum to enhance photosynthesis and promote morphogenesis in plants. Based on the above application requirements, Eu3+ single-doped LaAl1-yGayO3 solid solutions and Eu3+,Mn4+ codoped LaAl0.7Ga0.3O3 phosphors were designed and synthesized in this work. The LaAl0.7Ga0.3O3:0.05Eu3+ (LAG:Eu3+) phosphor exhibits a strong charge transfer band (CTB) excitation and characteristic 5D0-*7F2 transition red emission (619 nm), which is very similar to the luminescence properties of Eu3+-organic ligand compound (EuL3). Rietveld refinement studies further revealed that the cation substitution disturbs the site symmetry. The optimal Eu3+, Mn4+ co-doped LaAl0.7Ga0.3O3 (LAG:Eu,Mn) phosphor possesses a dual -band excitation spectrum in broadband ultraviolet (UVA, UVB) area and a dual-band emission spectrum within red/far-red area. Under the sunlight radiation, the real-time spectrum of luminous laminated glasses fabricated by coating the LAG:Eu,Mn phosphor shows the percentage of radiant intensity in the red/far-red region significantly increases, suggesting that the phosphor can be a promising candidate for solar spectral conversion in plant cultivation. We believe this work provides a new idea for developing novel broadband ultraviolet excitation and red/far-red emission phosphors.

引用

页码：3141 / 3152

页数：12

共 48 条

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