A novel high thermal stability Ba2CaWO6 : Mn4+ far-red emitting phosphor with a double-perovskite structure for plant growth LEDs

被引：29

作者：

Zhao, Sanni ^{[1
,2
]}

Xiang, Jinmeng ^{[1
,2
]}

Fang, Mu-Huai ^{[3
]}

Chen, Changheng ^{[1
,2
]}

Jin, Minkun ^{[1
,2
]}

Zhang, Niumiao ^{[1
,2
]}

机构：

[1] Northwest Univ, Inst Photon & Photon Technol, Xian 710127, Peoples R China

[2] Northwest Univ, Sch Phys, Xian 710127, Peoples R China

[3] Natl Taiwan Univ, Dept Chem, Taipei 106, Taiwan

来源：

OPTICAL MATERIALS | 2022年 / 124卷

基金：

中国国家自然科学基金;

关键词：

Double-perovskite; Phosphors; Tungstate; Far-red emitting; Plant growth; PHOTOLUMINESCENCE PROPERTIES; LUMINESCENCE PROPERTIES; SITE OCCUPANCY; EFFICIENCY;

D O I：

10.1016/j.optmat.2022.112052

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

A series of Ba2CaW1-xO6: xMn(4+) (BCWO: xMn(4+)) far-red emitting phosphors were successfully synthesized via a high-temperature solid-state reaction method. The phase purity and crystal structure were analyzed by X-ray diffraction (XRD) and Rietveld refinement. The luminescent properties and crystal field strength of Mn4+ occupied octahedra [WO6] environment were estimated according to the photoluminescence (PL) and photoluminescence excitation (PLE) spectra. Under near ultraviolet light (n-UV) excitation, far-red light (peaking at 695 nm) was obtained from BCWO: 0.75%Mn4+ , which matches well with the absorption band of the phytochrome P-FR. In addition, the thermal stability of the phosphor was investigated according to temperature-dependent PL spectra. The Mn4+ doped Ba2CaWO6 phosphor offers good luminescence performance and high thermal stability, and shows great potential for application in plant cultivation LEDs as a suitable far-red emitting phosphor.

引用

页数：8

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