Nano Archive

Luminescence, energy transfer, and upconversion mechanisms of Y2O3 nanomaterials doped with Eu3+, Tb3+, Tm3+, Er3+, and Yb3+ ions

Anh, TranKim and Benalloul, Paul and Barthou, Charles and Giang, Lam thiKieu and Nguyen , Vu and LeQuoc, Minh (2007) Luminescence, energy transfer, and upconversion mechanisms of Y2O3 nanomaterials doped with Eu3+, Tb3+, Tm3+, Er3+, and Yb3+ ions. JOURNAL OF NANOMATERIALS, Volume 2007 (2007), Article ID 48247 ( 10 ).

[img]
Preview
PDF - Published Version
1712Kb

Official URL: http://www.hindawi.com/GetArticle.aspx?doi=10.1155...

Abstract

Luminescence, energy transfer, and upconversion mechanisms of nanophosphors (Y2O3 : Eu3+, Tb3+, Y2O3 : Tm3+, Y2O3 : Er3+, Yb3+) both in particle and colloidal forms were studied. The structure, phase, and morphology of the nanopowders and nanocolloidal media were determined by high-resolution TEM and X-ray diffraction. It was shown that the obtained nanoparticles have a round-spherical shape with average size in the range of 4 to 20 nm. Energy transfer was observed for Y2O3 : Eu3+, Tb3+ colloidal and powders, upconversion transitions were observed for both Y2O3 : Er3+ and Y2O3 : Er3+, Yb3+ nanophosphors. The dependence of photoluminescence (PL) spectra and decay times on doping concentration has been investigated. The infrared to visible conversion of emission in Y2O3 : Er3+, Yb3+ system was analyzed and discussed aiming to be applied in the photonic technology. Copyright (C) 2007 TranKim Anh et al.

Item Type:Article
Subjects:Analytical Science > Microscopy and probe methods
Material Science > Nanostructured materials
ID Code:1457
Deposited By:Farnush Anwar
Deposited On:15 Dec 2008 11:29
Last Modified:13 Jan 2009 12:20

Repository Staff Only: item control page