Photoluminescence properties of LaSr2AlO5:Eu3+ phosphors for near UV-based w-LEDs

被引：1
作者：
Yerojwar, R. M. [1 ]
Kokode, N. S. [2 ]
Nandanwar, C. M. [2 ]
Ingole, D. K. [1 ]
Peddiwar, S. T. [3 ]
机构：
[1] Gondwana Univ, Mohasinbhai Zaweri Mahavidyalaya Desaiganj, Dept Phys, Gadchiroli 441207, MS, India
[2] NH Coll, Chandrapur 441206, MH, India
[3] Gondwana Univ, Mohasinbhai Zaweri Mahavidyalaya Desaiganj, Dept Chem, Gadchiroli 441207, MS, India
来源：
JOURNAL OF OPTICS-INDIA | 2024年 / 53卷 / 04期
关键词：
SEM; Combustion synthesis; w-LEDs; Phosphor; Photoluminescence; LUMINESCENCE PROPERTIES; EU3+; DY3+;
D O I：
10.1007/s12596-023-01427-z
中图分类号：
O43 [光学];
学科分类号：
070207 ; 0803 ;
摘要：
The combustion synthesis is used to prepare a series of LaSr2AlO5:Eu3+ phosphors. The morphology, photoluminescence properties and chromaticity are thoroughly investigated. The excitation peaks, which are located at 362 nm, 382 nm, 394 nm, and 417 nm, respectively, corresponding to the F-7(0) -> D-5(4), F-7(0) -> (5)G(3), F-7(0) -> L-5(6) and F-7(0) -> D-5(3) wavelengths. Upon 394 nm excitation, two emission peaks are observed at 591 nm (orange) and 613 nm (red), which correspond to the transitions D-5(0) -> F-7(1) and D-5(0) -> F-7(2) of Eu3+ ions, respectively. The emission spectra indicate red band of highest intensity from the electric dipole transition for D-5(0) -> F-7(2) at 613 nm. The Concentration quenching occurs at 0.5 mol % of Eu3+ ions. The results indicate that LaSr2AlO5:Eu3+ orange-red emitting phosphors under n-UV excitation can convert w-LEDs.
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收藏
页码：2951 / 2954
页数：4
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