Optical investigation of Tb3+-doped Y2O3 nanocrystals prepared by Pechini-type sol–gel process

We report an optical study of Tb 3+ -doped Y 2 O 3 nanocrystals synthesized by Pechini-type sol–gel method. The particles are investigated in terms of size and morphology by means of X-ray diffraction and transmission electron microscopy analysis. It is shown how the simple Pechini method allows for...

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Bibliographic Details
Published in:Journal of nanoparticle research : an interdisciplinary forum for nanoscale science and technology 2012-03, Vol.14 (4), Article 792
Main Authors: Back, M., Massari, A., Boffelli, M., Gonella, F., Riello, P., Cristofori, D., Riccò, R., Enrichi, F.
Format: Article
Language:English
Subjects:
Characterization and Evaluation of Materials
Chemistry and Materials Science
Inorganic Chemistry
Lasers
Materials Science
Nanotechnology
Optical Devices
Optics
Photonics
Physical Chemistry
Research Paper
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Summary:We report an optical study of Tb 3+ -doped Y 2 O 3 nanocrystals synthesized by Pechini-type sol–gel method. The particles are investigated in terms of size and morphology by means of X-ray diffraction and transmission electron microscopy analysis. It is shown how the simple Pechini method allows for the growth of monocrystalline nanoparticles with a volume-weighted average size of about 30 nm. The optical properties of Tb 3+ in the host lattice are studied in terms of PL, PLE, and lifetimes. Moreover, a correlation between the type of decay curves, the emission and excitation bands' shapes, and the site location of the emitting Tb 3+ in the host material Y 2 O 3 is proposed.
ISSN:1388-0764
1572-896X
DOI:10.1007/s11051-012-0792-x