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Zero‐Thermal Quenching of Mn 2+ Red Luminescence via Efficient Energy Transfer from Eu 2+ in BaMgP 2 O 7
Author(s) -
Shi Rui,
Ning Lixin,
Wang Zhiqiang,
Chen Jiatang,
Sham TsunKong,
Huang Yan,
Qi Zeming,
Li Cuijin,
Tang Qiang,
Liang Hongbin
Publication year - 2019
Publication title -
advanced optical materials
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 2.89
H-Index - 91
ISSN - 2195-1071
DOI - 10.1002/adom.201901187
Subject(s) - luminescence , phosphor , materials science , quenching (fluorescence) , analytical chemistry (journal) , persistent luminescence , energy transfer , doping , photoluminescence , photochemistry , atomic physics , optoelectronics , fluorescence , optics , thermoluminescence , chemistry , physics , chromatography
Mn 2+ ‐activated phosphors usually show green to red luminescence depending on the crystal field strength in the lattice. However, the severe intensity loss of Mn 2+ luminescence at elevated temperatures remains to be a serious problem. Here, the observation of zero‐thermal quenching of Mn 2+ red luminescence (λ em = 620 nm) up to 500 K in Eu 2+ , Mn 2+ ‐codoped BaMgP 2 O 7 is reported. This phenomenon arises from an efficient energy transfer from sensitizers Eu 2+ which, when singly doped, exhibits a substantial thermal‐induced enhancement of 5d→4f emission intensity at 400 nm, along with a high luminescence efficiency and a large UV light absorption capacity. The present results open up a new path to the exploration of Eu 2+ , Mn 2+ ‐codoped materials for thermally stable red phosphors.