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Optical Performances of YAG :Re 3+ (Re = Ce, Eu) Phosphor Films with Co‐Doping Tb 3+ as Energy‐Transfer Sensitizer
Author(s) -
Zhao Yunyun,
Xu Huarui,
Zhang Xiuyun,
Zhu Guisheng,
Yan Dongliang,
Ling Qia,
Chen Minsheng,
Yu Aibing
Publication year - 2016
Publication title -
journal of the american ceramic society
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.9
H-Index - 196
eISSN - 1551-2916
pISSN - 0002-7820
DOI - 10.1111/jace.14098
Subject(s) - phosphor , doping , materials science , energy transfer , excited state , ultraviolet , absorption (acoustics) , analytical chemistry (journal) , quenching (fluorescence) , irradiation , fluorescence , luminescence , optoelectronics , photochemistry , optics , chemistry , atomic physics , physics , chromatography , nuclear physics , molecular physics , composite material
The paper investigates the effect of co‐doping Tb 3+ as an energy‐transfer sensitizer on optical properties of YAG :Re 3+ (where, Re = Ce, Eu) phosphor films synthesized by sol–gel route. The results suggest that, Tb 3+ is a promising sensitizer for improving the optical performances of the as‐prepared YAG :Re 3+ films, and a Tb 3+ co‐doping concentration of 20% was found to be an optimum level on account of Tb 3+ concentration quenching. Due to the energy‐transfer processes of Tb 3+ →Re 3+ , the as‐prepared Y 0.8 Tb 0.2 AG:Re 3+ films displayed strong abilities of absorption in the ultraviolet ( UV ) light range, and bright green–yellow emission for YAG :Ce 3+ or red emission for YAG :Eu 3+ under 275 nm irradiation, which could be utilized for UV ‐excited WLED and display applications.