Synthesis of CaTiO₃: Pr, Al phosphors by sol-gel method and their luminescence properties

Authors: Yin, Shengyu; Chen, Donghua; Tang, Wanjun; Yuan, Yuhong

Source: Journal of Materials Science, Volume 42, Number 8, April 2007 , pp. 2886-2890(5)

Publisher: Springer

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Abstract:

Red long afterglow CaTiO₃: Pr, Al phosphors have been synthesized by sol-gel method using ethanol as solvent and citric acid as a chelating agent. TG-DTG curves and X-ray diffraction analysis indicate that crystalline calcium titanate has been synthesized at calcining temperature of 700 °C for 5 h. Photoluminescence and decay curves indicate that the luminescence properties of phosphors synthesized by sol-gel method are better than that prepared by solid-state reaction and the sample heated at 900 °C exhibits the optimal luminous property. Using ultrasonic dispersing technique improved the luminescence properties of phosphors.

Document Type: Research article

DOI: http://dx.doi.org/10.1007/s10853-007-1655-1

Affiliations: 1: Email: chendh46@hotmail.com

Publication date: 2007-04-01