Luminescence Properties of Ytterbium Activated PLZT Ceramics

Abstract:

In the present work the influence of co-doping with ytterbium ions (for 0, 0.5, 1.5, 2.5 wt.% of Yb³⁺) on physical properties of 8/65/35 PLZT was studied. The ceramic powders were synthesized by the modified sol-gel method, and underwent consolidation by the pressure-less sintering techniques, in Ts=1200°C/6h. Our investigations give a detailed account of the relationships between concentrations of trivalent ytterbium ions in PLZT matrix, on their structure, microstructure, as well as luminescence properties. Near-infrared luminescence spectra at about 1020 nm were registered, which correspond to ²F_5/2 - ²F_7/2 transition of Yb³⁺. Based on decay measurements, the luminescence lifetimes for the ²F_5/2 excited state of Yb³⁺ were determined. Luminescence decay analysis indicates that the ²F_5/2 lifetime increase with increasing activator concentration (Yb³⁺) in PLZT ceramic matrix.

• Periodical: Advances in Science and Technology (Volume 98)
• Pages: 64-69
• DOI: https://doi.org/10.4028/www.scientific.net/AST.98.64
• Online since: October 2016
• Authors: Malgorzata Plonska*, Wojciech A. Pisarski, Joanna Pisarska
• Keywords: Luminescence Properties, PLZT, Sol-Gel Ceramics, Ytterbium

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