Ce~(3+) to Tb~(3+) energy transfer in alkaline earth (Ba, Sr or Ca) sulphate phosphors

M.T. Jose; A.R. Lakshmanan

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Ce~(3+) to Tb~(3+) energy transfer in alkaline earth (Ba, Sr or Ca) sulphate phosphors

机译：碱土金属（Ba，Sr或Ca）硫酸盐磷光体中Ce〜（3+）到Tb〜（3+）的能量转移

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摘要

Energy transfer between Ce~(3+) and Tb~(3+) dopants in alkaline earth (Ba, Sr or Ca) sulphate phosphors is investigated. Among these three phosphors, CaSO_4:Ce~(3+),Tb~(3+) showed maximum Tb~(3+) green emission on excitation with UV light. Photoluminescence measurements reveal that the emission intensity from CaSO_4:Ce~(3+),Tb~(3+) is comparable with that of the commercial green lamp phosphor Ce_(0.65)Tb_(0.35)MgAl_(11)O_(19). Optimum concentrations of dopants in CaSO_4:Ce~(3+),Tb~(3+) are 0.2 mol% each and the optimum sintering treatment following re-crystallisation is 600℃ for 1 h duration. The effect of charge compensator in all the three phosphors is also studied.

机译：研究了碱土（Ba，Sr或Ca）硫酸盐荧光粉中Ce〜（3+）和Tb〜（3+）掺杂剂之间的能量转移。在这三种荧光粉中，CaSO_4：Ce〜（3 +），Tb〜（3+）在紫外光激发下显示出最大的Tb〜（3+）绿光发射。光致发光测量表明，CaSO_4：Ce〜（3 +），Tb〜（3+）的发射强度与商用绿灯磷光体Ce_（0.65）Tb_（0.35）MgAl_（11）O_（19）相当。 CaSO_4：Ce〜（3 +），Tb〜（3+）中的最佳掺杂浓度分别为0.2 mol％，重结晶后的最佳烧结处理温度为600℃，持续1 h。还研究了所有三种荧光粉中电荷补偿剂的作用。

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来源
《Optical Materials》 |2004年第4期|p.651-659|共9页
作者
M.T. Jose; A.R. Lakshmanan;
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作者单位

Health and Safety Division Indira Gandhi Centre for Atomic Research Kalpakkam 603 102 India;

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收录信息美国《科学引文索引》(SCI);美国《工程索引》(EI);
原文格式 PDF
正文语种 eng
中图分类工程材料学;
关键词
energy transfer; lamp phosphor; green emission; alkaline earth sulphates; rare earth;

机译：能量转移;荧光粉绿色排放;碱土硫酸盐;稀土;

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2. A broadband-excited and narrow-line GdBO_3: Ce~(3+), Tb~(3+), Eu~(3+) red phosphor with efficient Ce~(3+) → (Tb~(3+))_n → Eu~(3+) energy transfer for NUV LEDs [J] . Xinguo Zhang, Liya Zhou, Qi Pang, Optical Materials . 2014,第7期

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6. Tunable Luminescence in Sr2MgSi2O7:Tb3+ Eu3+Phosphors Based on Energy Transfer [O] . Minhong Li, Lili Wang, Weiguang Ran, 2017

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8. Theoretical Free-Ion Energies,Derivatives and Reduced Matrix Elements I. Pr(3+),Tm(3+),Nd(3+),and Er(3+). [R] . morrison,clyde a. karayianis,nick 1977

机译：理论自由离子能量，衍生物和还原的基质元素I. pr（3 +），Tm（3 +），Nd（3 +）和Er（3+）。

Ce~(3+) to Tb~(3+) energy transfer in alkaline earth (Ba, Sr or Ca) sulphate phosphors

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