Energy transfer from Ce3+ to Dy3+ ions for white light emission in Sr2MgAl22O36:Ce3+, Dy3+ phosphor

被引：20

作者：

Dev, Kapil ^{[1
]}

Selot, Anupam ^{[1
]}

Nair, Govind B. ^{[2
]}

Barai, Vijay L. ^{[2
]}

Haque, Fozia Z. ^{[3
]}

Aynyas, M. ^{[4
]}

Dhoble, S. J. ^{[2
]}

机构：

[1] Sadhu Vaswani Coll, Dept Phys, Bhopal 462030, India

[2] RTM Nagpur Univ, Dept Phys, Nagpur 440033, Maharashtra, India

[3] Maulana Azad Natl Inst Technol, Dept Phys, Opt Nanomat Lab, Bhopal 462003, India

[4] Govt PG Coll, Dept Phys, Sehore 462016, India

来源：

JOURNAL OF LUMINESCENCE | 2019年 / 206卷

关键词：

Photoluminescence; Energy transfer; Phosphor; Aluminate; PHOTOLUMINESCENCE PROPERTIES; LUMINESCENCE PROPERTIES; NANO PHOSPHOR; COLOR; EU2+; PR3+;

D O I：

10.1016/j.jlumin.2018.10.092

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

Series of Sr2MgAl22O36:Ce3+, Sr2MgAl22O36:Dy3+ and Sr2MgAl22O36:Ce3+,Dy3+ phosphors were synthesized by urea-assisted combustion method. The identification of phase and morphology of the prepared samples were characterized by X-ray diffraction (XRD) and scanning electron microscopy (SEM). Photoluminescence excitation (PLE) and emission spectra of the as-prepared samples were investigated. Photoluminescence studies revealed that the luminescence intensity of Ce3+ ion increases with increasing concentration in Sr2MgAl22O36:Ce3+ and no concentration quenching have been witnessed. Similar trend was observed for Sr2MgAl22O36:Dy3+ with increasing Dy3+ concentration. The energy transfer from Ce3+ to Dy3+ in Sr2MgAl22O36 host has been achieved successfully to produce white light emission. The calculated Commission Internationale de L'Eclairage (CIE) chromaticity coordinates for the Sr2MgAl22O36:Ce3+, Dy3+ phosphor are (x = 0.302, y = 0.357). The values of CIE chromaticity coordinates and correlated color temperature (CCT) of 6798 K endorse Sr2MgAl22O36:Ce3+, Dy3+ phosphor as potential candidate for cool white-light emission.

引用

页码：380 / 385

页数：6

共 38 条

[1] Ce3+ sensitized bright white light emission from colloidal Ln3+ doped CaF2 nanocrystals for the development of transparent nanocomposites [J].