Tunable photoluminescence in novel Ca2La1-xGdxNbO6:Bi3+ double perovskite phosphor for the application of luminescent cement-based composite materials

被引：5

作者：

Liu, Shiqi ^{[1
]}

Zhang, Bing ^{[1
]}

Zhou, Zichen ^{[1
]}

Zeng, Ming ^{[1
]}

Tu, Dong ^{[2
]}

机构：

[1] MCC, Wuhan Res Inst Met Construct, Wuhan 430081, Peoples R China

[2] Wuhan Univ, Suzhou Inst, Suzhou 215123, Peoples R China

来源：

JOURNAL OF SOLID STATE CHEMISTRY | 2022年 / 312卷

基金：

中国国家自然科学基金;

关键词：

Double perovskite; Structure tailoring; Tunable luminescence; Luminescent cement-based composite; MODULATION; CATIONS; COLOR; BI3+; SR; BA; CA;

D O I：

10.1016/j.jssc.2022.123264

中图分类号：

O61 [无机化学];

学科分类号：

070301 ; 081704 ;

摘要：

In this study, novel luminescent cement-based composite materials with tunable emission color were prepared. A series of novel Bi3+ doped double perovskite Ca2La1-xGdxNbO6 phosphors were firstly synthesized and the relationships between structure variation and tunable luminescence were discussed. The Gd substitution for La led to the change of crystal compressive strain, average bond length and polyhedron distortion of (Ca/Ln)O-6 polyhedron, which caused the emission color of Ca2La1-xGdxNbO6:Bi3+ tuned from (0.2020, 0.2472) to (0.1581, 0.0992). Furthermore, the synthesized Ca2La1-xGdxNbO6:Bi3+ phosphors were combined with cementitious materials, which made the luminescent specimens displayed tunable cyan-blue to blue emission color, and the XRD, SEM and EDS tests presented that the phosphors and cement were uniformly mixed in the cementitious material. These brilliant properties indicated that the synthesized phosphor could be used in exploring novel luminescent cement-based composite materials.

引用

页数：9

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