| Article ID | Journal | Published Year | Pages | File Type |
|---|---|---|---|---|
| 5458998 | Journal of Alloys and Compounds | 2017 | 8 Pages |
Abstract
Eu3+-doped double perovskite (Ba, Sr)LaMgSbO6 phosphors were synthesized by the traditional solid-state reaction method. Structure evolution was investigated by X-ray diffraction and Rietveld structure refinement. The crystallographic data of powders were given in detail. Also, the photoluminescence properties, including excitation spectra, emission spectra, intensity ratios of I (5D0-7F2)/I (5D0-7F1), Commission International de L'Eclairage (CIE) chromaticity coordinates, UV-vis diffuse reflectance spectra, lifetimes, and the thermal quenching properties were thoroughly discussed. With the increase of Sr2+ concentration, the emission intensities increased and the decay times decreased. Band gap was calculated to explain the phenomenon of the increased emission intensity. The phosphors showed temperature-sensitive luminescent properties based on the thermal quenching performance. The configurational coordinate diagram was used to explain the thermal quenching mechanism.
Related Topics
Physical Sciences and Engineering
Materials Science
Metals and Alloys
Authors
Quan Liu, Lixi Wang, Wentao Huang, Le Zhang, Mingxun Yu, Qitu Zhang,