Preparation and the PL Properties of Er³⁺ - Ce³⁺ Co-Doped TiO₂ Powders

Abstract:

The 0.5-3.0 mol% Er³⁺-Ce³⁺ co-doped TiO₂ powders have been prepared by sintering the hybrid materials Er_0.5Ce_0.5(AA)₃phen-doped TiO₂/PMMA, which were prepared by sol-gel method, using the modified titanium (IV) n-butoxide [Ti(O-Bu)_4-x(AAPhen)_x] as precursors which were given by the chelate reaction between Ti(O-Bu)₄, AA and Phen at 70°C. The hybrid matrix TiO₂/PMMA improved the dispersion of Er³⁺, which caused an enhancement in the photoluminescence (PL) peak intensity at 1.53 mm of the 1 mol% Er (AA)₃phen-doped TiO₂/PMMA powders sintered at 700 °C of about 23 times higher than that only had TiO₂ as its matrix. When co-doped with Ce³⁺, the above ratio of the PL peak intensity was raised to 75 times, which illustrated the obvious sensitization and dispersion effects of Ce³⁺ on Er³⁺.

• Periodical: Applied Mechanics and Materials (Volume 528)
• Pages: 30-33
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.528.30
• Online since: February 2014
• Authors: Ling Yun Bai*, Long Fa Jiang, Jun Huai Xiang
• Keywords: Hybrid Material, PL Property, Sol-Gel Method, TiO₂/PMMA

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