Photoluminescence Properties Of Tb3+-Doped Stalk-Like Al2O3

Keywords

Al O : Tb 2 3 3+; Hydrothermal route; Photoluminescence

Abstract

Uniform Al2O3 : Tb3+ samples were successfully fabricated via a hydrothermal method and subsequent thermal decomposition of Tb3+ doped precursors. Scanning electron microscopy results showed Tb3+-doped Al2O3 was stalk-like with an average length about 1.5 μm. Photoluminescence spectra indicated that the 5D4 → 7F5 (545 nm) electric dipole transition was most intense upon excitation at 227 nm. It is shown that 1.5 mol.% doping concentration of Tb3+ ions in Al2O3 : Tb3+ is optimum. According to Dexter's theory, the critical distance between Tb3+ ions in Al2O3 for energy transfer was determined to be 14 Å.

Publication Date

3-1-2016

Publication Title

International Journal of Materials Research

Volume

107

Issue

3

Number of Pages

280-282

Document Type

Article

Personal Identifier

scopus

DOI Link

https://doi.org/10.3139/146.111335

Socpus ID

84962861249 (Scopus)

Source API URL

https://api.elsevier.com/content/abstract/scopus_id/84962861249

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