Luminescence in Eu2+ Activated (Ca5-xSrx)(PO4)3Cl (x=0.1, 2.4) Phosphors

被引:2
作者
Mungmode, C. D. [1 ]
Gahane, D. H. [2 ]
Tupte, B., V [3 ]
Bhave, M. M. [2 ]
Moharil, S., V [4 ]
机构
[1] MG Coll, Armori 441208, India
[2] NH Coll, Bramhapuri 441206, India
[3] SGM Coll, Kurkheda 441209, India
[4] RTM Nagpur Univ, Nagpur 440010, Maharashtra, India
关键词
Photoluminescence; Phosphor; Apatite; LED; CHLOROAPATITE;
D O I
10.1016/j.matpr.2019.04.120
中图分类号
T [工业技术];
学科分类号
08 ;
摘要
Phosphates materials are low in cost, environmental friendly, have good thermal stability and good photoluminescence properties. In the present work Eu2+ doped (Ca5-xSrx)(PO4)(3)Cl (x = 0.1, 2.4) novel phosphors are prepared using wet chemical synthesis method. Intense blue emission is observed when characterised for photoluminescence spectrum. Photoluminescence spectrum of (Ca5-xSrx)(PO4)(3)Cl exhibit emission peak cantered at around 449 nm attributed to 4f(6)5d to 4f(7) transition of Eu2+ upon excitation by 365 nm radiations. Excitation spectrum of the phosphors shows efficient response in near UV region. CIE chromaticity coordinates for (Ca2.55Eu0.05) Sr-2.4(PO4)(3)Cl are x = 0.1508 to and y = 0.0331 and those for (Ca4.85Eu0.05) Sr-0.1(PO4)(3)Cl are x = 0.1510 and y = 0.0321 (red dot), indicating the emitting colour is tunable in blue region. Thus, results showed that (Ca5-xSrx) (PO4)(3)Cl:Eu2+ phosphors can be used as a blue host for white LED. (C) 2019 Elsevier Ltd. All rights reserved.
引用
收藏
页码:555 / 559
页数:5
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