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Proceedings Paper

Optical behavior of Pr3+-doped barium titanate-calcium titanate material prepared by sol-gel method
Author(s): Xiaoyan Wang; Yanxue Tang; Xiyun He; Pingsun Qiu; Qizhuang He; Zifei Peng; Dazhi Sun
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Paper Abstract

Photoluminescence performances of Pr-doped alkaline-earth titanates (Ba,Ca)TiO3 (with rich barium) prepared by a solgel technique are investigated at room temperature. A relatively strong red luminescence is observed in (Ba0.80Ca0.20)TiO3 material when Pr-BaTiO3 material does not exhibit obvious red luminescence. The phenomenon is discussed with respect to the substitute of Ca and the two-photon luminescence effect. The red luminescence is enhanced by a fast thermal treatment. The wavelength range of luminescence near red and infrared light is broadened by the same process as well. These behaviors are ascribed to the randomization of distribution of Ca and Ba at A site in ABO3 perovskite structure. The experimental results provide not only a possible way to develop new materials with pastel visual impression, but also a potential technique to modify photoluminescence properties that can be controlled by external fields because the microscopic structure of BaTiO3, such as electric domains, can be changed by electric field, temperature, and so on.

Paper Details

Date Published: 20 October 2009
PDF: 8 pages
Proc. SPIE 7493, Second International Conference on Smart Materials and Nanotechnology in Engineering, 74936A (20 October 2009); doi: 10.1117/12.843046
Show Author Affiliations
Xiaoyan Wang, Shanghai Normal Univ. (China)
Yanxue Tang, Shanghai Normal Univ. (China)
Xiyun He, Shanghai Institute of Ceramics (China)
Pingsun Qiu, Shanghai Institute of Ceramics (China)
Qizhuang He, Shanghai Normal Univ. (China)
Zifei Peng, Shanghai Normal Univ. (China)
Dazhi Sun, Shanghai Normal Univ. (China)

Published in SPIE Proceedings Vol. 7493:
Second International Conference on Smart Materials and Nanotechnology in Engineering
Jinsong Leng; Anand K. Asundi; Wolfgang Ecke, Editor(s)

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