Structural and luminescent properties of solid-solution phosphor BaxSr1-xAl2O4: Eu2+

被引：4

作者：

Fang, Hongwei ^{[1
]}

Wei, Xiantao ^{[1
]}

Wang, Zizhe ^{[1
]}

Cheng, Jun ^{[1
]}

Yin, Min ^{[1
]}

Chen, Yonghu ^{[1
]}

机构：

[1] Univ Sci & Technol China, Chinese Acad Sci, Sch Phys Sci, Key Lab Strongly Coupled Quantum Matter Phys, 96 Jinzhai Rd, Hefei 230026, Anhui, Peoples R China

来源：

JOURNAL OF LUMINESCENCE | 2017年 / 191卷

基金：

中国国家自然科学基金;

关键词：

Solid-solution; Structural phase transition; Non-monotonous spectral shift; Site occupation; AB-INITIO; NANOCRYSTALS; ALUMINATE; SRAL2O4;

D O I：

10.1016/j.jlumin.2016.12.027

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

Solid-solution BaxSr1-xAl2O4 doped with Eu2+ phosphors with various x were successfully synthesized via conventional solid-state method. The structural properties were characterized by X-ray diffraction and the luminescent properties were studied via photoluminescence spectra. We observed an obvious phase transition in the solid-solution BaxSr1-xAl2O4 host, and the turning point located at around x = 0.45, which fitted well with our calculated result based on DFT approach. In addition, the photoluminescence emission spectra witnessed a non-monotonous shift of peak's position with various compositions. The non-monotonicity was not due to structural anomaly as all the samples were confirmed to be solid-solutions by XRD measurements. Our analysis suggests that the non-monotonous spectral shift is mainly determined by the site Eu2+ ions opt to occupy in the solid-solution. (C) 2016 Elsevier B.V. All rights reserved.

引用

页码：46 / 50

页数：5

共 27 条

[11] From ultrasoft pseudopotentials to the projector augmented-wave method [J].