Synthesis, Structure, Morphology, and Luminescent Properties of Ba2MgWO6: Eu3+ Double Perovskite Obtained by a Novel Co-Precipitation Method

被引：35

作者：

Vu, Thi Hong Quan ^{[1
]}

Bondzior, Bartosz ^{[1
]}

Stefanska, Dagmara ^{[1
]}

Miniajluk, Natalia ^{[1
]}

Deren, Przemyslaw J. ^{[1
]}

机构：

[1] Polish Acad Sci, Inst Low Temp & Struct Res, Okolna 2, PL-50422 Wroclaw, Poland

来源：

MATERIALS | 2020年 / 13卷 / 07期

关键词：

double perovskite; Eu3+; high symmetry site; inversion center; co-precipitation method; RED EMISSION; TRANSITIONS; PHOSPHORS;

D O I：

10.3390/ma13071614

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

Eu3+ doped Ba2MgWO6 (BMW) double-perovskite was successfully synthesized for the first time by the co-precipitation method. The synthesis procedure, crystal structure, as well as morphology of obtained samples are presented. Domination of the D-5(0)-F-7(1) magnetic-dipole over forced electric-dipole transitions in the emission spectra indicates that Eu3+ ions are located in the high symmetry site with inversion center. Only one emission line assigned to the D-5(0)-F-7(0) transition was observed, confirming that europium substituted for only one host cation site. The photoluminescence excitation (PLE) spectrum is dominated by a strong and broad band related to the O2- -> Eu3+ and O2- -> W6+ charge transfer. The decay of the emission from the D-5(0) and D-5(1) levels was investigated. The temperature-dependent emission spectra showed that the T-0.5 is equal to 350 K. Extinguishing mechanisms of the Eu3+ luminescence in the studied host are discussed.

引用

页数：13

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