| Article ID | Journal | Published Year | Pages | File Type |
|---|---|---|---|---|
| 5397445 | Journal of Luminescence | 2017 | 4 Pages |
Abstract
The unusual photoluminescence (PL) properties and temperature dependent decay behavior of Eu2+ in KBaBP2O8 are reported and discussed. The emission spectrum is so complicate that it can be deconvoluted into three fitting peaks. The emission bands peaking at 380 and 444Â nm can be assigned to the 4f65d1â4f7 transition of Eu2+ centers substituting for K+ and Ba2+ site, while the emission band at 497Â nm may be attributed to the Eu2+ center on K+ site with a nearby charge-compensated vacancy. The decay time of the 4f65d emission increases with temperature. This increase can be explained by either thermal population of the 4f7 (6P7/2) level or thermal population of higher energetic 4f65d states.
Keywords
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Physical Sciences and Engineering
Chemistry
Physical and Theoretical Chemistry
Authors
Luyi Wu, Xinmin Zhang, Jiaxin Yang, Yang Xu, Hongzhi Zhang, Mengdong He, Guangming Yuan, Hyo Jin Seo,