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
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
收藏
页码:46 / 50
页数:5
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