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用于白光发光二极管的(Tb Mn )Al(Al Si )O:Ce固溶体的颜色可调光致发光和能量转移

Color-tunable photoluminescence and energy transfer of (Tb Mn )Al(Al Si )O:Ce solid solutions for white light emitting diodes.

作者信息

Lang Tianchun, Han Tao, Zhao Cong, Cao Shixiu, Fang Shuangqiang, Li Shuai, Zhao Lei, Korepanov Vladimir I, Yakovlev Alexey N

机构信息

Research Institute for New Materials Technology, Chongqing University of Arts and Sciences Chongqing 402160 China

Institute of High Technology Physics, National Research Tomsk Polytechnic University Tomsk 634050 Russia.

出版信息

RSC Adv. 2018 Oct 23;8(63):36056-36062. doi: 10.1039/c8ra07994c. eCollection 2018 Oct 22.

DOI:10.1039/c8ra07994c
PMID:35558494
原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC9088733/
Abstract

(Tb Mn )Al(Al Si )O:Ce solid solution phosphors were synthesized by introducing the isostructural MnAl(SiO) (MAS) into TbAlO:Ce (TbAG). Under 456 nm excitation, (Tb Mn )Al(Al Si )O:Ce shows energy transfers (ET) in the host, which can be obtained from the red emission components to enhance color rendering. Moreover, (Tb Mn )Al(Al Si )O:Ce ( = 0-0.2) exhibits substantial spectral broadening (68 → 86 nm) due to the 5d → 4f transition of Ce and the T → A transition of Mn. The efficiency of energy transfer ( , Ce → Mn) gradually increases with increasing Mn content, and the value reach approximately 32% at = 0.2. Namely, the different characteristics of luminescence evolution based on the effect of structural variation by substituting the (MnSi) pair for the larger (TbAl) pair. Therefore, with structural evolution, the luminescence of the solid solution phosphors could be tuned from yellow to orange-red, tunable by increasing the content of MAS for the applications of white light emitting diodes (wLED).

摘要

通过将同结构的MnAl(SiO)（MAS）引入TbAlO:Ce（TbAG）中，合成了(Tb Mn )Al(Al Si )O:Ce固溶体荧光粉。在456 nm激发下，(Tb Mn )Al(Al Si )O:Ce在基质中表现出能量转移（ET），这可以从红色发射分量中获得以增强显色性。此外，由于Ce的5d→4f跃迁和Mn的T→A跃迁，(Tb Mn )Al(Al Si )O:Ce（ = 0 - 0.2）表现出显著的光谱展宽（68→86 nm）。能量转移效率（ ，Ce→Mn）随着Mn含量的增加而逐渐增加，在 = 0.2时该值达到约32%。也就是说，基于用较大的（MnSi）对替代（TbAl）对的结构变化效应，发光演化具有不同的特征。因此，随着结构演化，通过增加MAS的含量，固溶体荧光粉的发光可以从黄色调谐到橙红色，可用于白光发光二极管（wLED）的应用。

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