Effect of the Er3+ Co-dopant on the Green Upconversion Emission of LaSr2AlO5:Yb3+ Phosphors

This work presents the structural, morphological and optical properties of LaSr 2 AlO 5 :Yb 3+ ,Er 3+ phosphors (LSA:Yb,Er) synthesized by a combustion method. The Yb 3+ concentration was kept constant at 2 mol.%, while the Er 3+ concentration changed from 0.2 mol.% to 6 mol.%. X-ray diffraction mea...

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Bibliographic Details
Published in:Journal of electronic materials 2018-11, Vol.47 (11), p.6567-6574
Main Authors: Oliva, J., García, C. R., Díaz Torres, L. A., Camacho, C., Guzman-Rocha, M., Romero, M. T., Hirata, G. A.
Format: Article
Language:English
Subjects:
Aluminum
Characterization and Evaluation of Materials
Chemistry and Materials Science
Codopants
Electronics and Microelectronics
Emission spectra
Energy
Erbium
Fourier transforms
Instrumentation
Luminescence
Materials Science
Morphology
Nitrates
Optical and Electronic Materials
Optical properties
Phosphors
Rare earth elements
Scanning electron microscopy
Solid State Physics
Upconversion
X-ray diffraction
Ytterbium
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Summary:This work presents the structural, morphological and optical properties of LaSr 2 AlO 5 :Yb 3+ ,Er 3+ phosphors (LSA:Yb,Er) synthesized by a combustion method. The Yb 3+ concentration was kept constant at 2 mol.%, while the Er 3+ concentration changed from 0.2 mol.% to 6 mol.%. X-ray diffraction measurements revealed that all the LSA:Yb,Er phosphors presented a pure tetragonal phase. Scanning electron microscopy images show that LSA:Yb,Er phosphors increased their size as the Er 3+ concentration increases (from 1.95 μm for Er 3+ concentrations 
ISSN:0361-5235
1543-186X
DOI:10.1007/s11664-018-6570-5