Intense infrared, visible up and down emissions in Er3+/Yb3+ co-doped SrAl12O19 obtained by urea assisted combustion route

SrAl 12 O 19 phosphors containing the Yb 3+ and the Er 3+ were prepared using the urea-assisted combustion process. The formation of the combustion products was confirmed by the XRD analysis, indicating the formation of the hexagonal phase. The Er 3+ emission at 1.5 µm and the IR-to-visible up-conve...

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Bibliographic Details
Published in:Journal of materials science. Materials in electronics 2018-10, Vol.29 (19), p.16516-16522
Main Authors: Singh, Vijay, Seshadri, M., Radha, M., Singh, N., Nandyala, Sooraj H.
Format: Article
Language:English
Subjects:
Characterization and Evaluation of Materials
Chemistry and Materials Science
Clean energy
Combustion products
Diodes
Emission analysis
Energy
Erbium
Excitation
Hexagonal phase
Lasers
Materials Science
Nitrates
Optical and Electronic Materials
Optoelectronic devices
Phosphors
Upconversion
Ureas
Ytterbium
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Summary:SrAl 12 O 19 phosphors containing the Yb 3+ and the Er 3+ were prepared using the urea-assisted combustion process. The formation of the combustion products was confirmed by the XRD analysis, indicating the formation of the hexagonal phase. The Er 3+ emission at 1.5 µm and the IR-to-visible up-conversion emission upon the 980-nm excitation were evaluated as a function of the excitation power. The stronger green-emission band ( 4 S 3/2  →  4 I 15/2 ) at 546 nm became evident. The intensity of the visible, up, and down emission bands were significantly enhanced in the Er 3+ /Yb 3+ :SrAl 12 O 19 phosphor due to the energy transfer from the Yb 3+ ions to the Er 3+ ions. The results indicate the potential of Er 3+ and Er 3+ /Yb 3+ :SrAl 12 O 19 phosphors for applications in optoelectronic devices.
ISSN:0957-4522
1573-482X
DOI:10.1007/s10854-018-9745-1