Please use this identifier to cite or link to this item: http://hdl.handle.net/10397/2892
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Title: Effects of site substitutions and concentration on upconversion luminescence of Er³⁺-doped perovskite titanate
Authors: Zhang, Y
Hao, JH 
Mak, CL 
Wei, X
Issue Date: 31-Jan-2011
Source: Optics express, 31 Jan. 2011, v. 19, no. 3, p. 1824-1829
Abstract: Upconversion photoluminescence (PL) of Er³⁺-doped BaTiO₃ (BTO) with perovskite ABO₃ structure is studied in terms of Er³⁺ substitutions for Ba (A-) and Ti (B-site) with different Er³⁺ doping concentrations. PL quenching with an increase Er³⁺ doping concentration is investigated based on the structural change and energy transfer of cross-relaxation process in BTO: Er, i.e. ²H[sub 11/2] + ⁴I[sub 15/2]→⁴I[sub 9/2] + ⁴I[sub 13/2]. Temperature dependence of the PL in BTO: Er is revealed, which is associated with phase transitions of BTO host. The results imply that the emission from substituted Er³⁺ ions may be used as a structural probe for the ferroelectric titanates.
Keywords: Upconversion
Rare-earth-doped materials
Ferroelectrics
Publisher: Optical Society of America
Journal: Optics express 
EISSN: 1094-4087
DOI: 10.1364/OE.19.001824
Rights: © 2011 Optical Society of America. This paper was published in Optics express and is made available as an electronic reprint with the permission of OSA. The paper can be found at the following URL on the OSA website: http://www.opticsinfobase.org/oe/abstract.cfm?URI=oe-19-3-1824. Systematic or multiple reproduction or distribution to multiple locations via electronic or other means is prohibited and is subject to penalties under law.
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