Preparation and Research on Luminescent Properties of Eu-Doped TiO₂-ZnO Composite Powders

Abstract:

The Eu-doped TiO₂ nanocrystals with different content of Eu³⁺ and the Eu-doped TiO₂-ZnO composite powders with different content of ZnO were prepared by sol-gel method. The X-ray diffraction (XRD) spectra and photoluminescence(PL) spectra indicated that all of the Eu-doped TiO₂ have anatase structure. It indicated that the incorporation of Eu³⁺ can inhibit the transformation of TiO₂ from anatase to rutile phase. With the increase of the content of Eu³⁺, the luminous intensity first increased and then decreased, and luminescent properties were best when the content of Eu³⁺ is 1.1%. Considering the Eu-doped TiO₂-ZnO composite powders, with the increasing of the proportion of ZnO, a Zn₂TiO₄ phase has been gradually generated. When the content of ZnO up to 40%, the luminescent properties are the best.

• Periodical: Advanced Materials Research (Volumes 652-654)
• Pages: 622-627
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.652-654.622
• Online since: January 2013
• Authors: Bao Xiang Jiao, Meng Ting Li, Xia Zhang, Xu Wang
• Keywords: Eu-Doped, Luminescent, Sol-Gel (SG), TiO₂-Zno

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