发光
分析化学(期刊)
材料科学
猝灭(荧光)
持续发光
能量转移
兴奋剂
光致发光
荧光粉
光化学
化学
原子物理学
荧光
光学
光电子学
热释光
物理
色谱法
作者
Rui Shi,Lixin Ning,Zhiqiang Wang,Jiatang Chen,Tsun‐Kong Sham,Yan Huang,Zeming Qi,Cui‐Jin Li,Qiang Tang,Hongbin Liang
标识
DOI:10.1002/adom.201901187
摘要
Abstract 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.
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