Photoluminescence and Energy Storage Traps in CaTiO₃:Pr³⁺

Authors

Xianmin Zhang, Liaoning University
Chunyan Cao, Jinggangshan UniversityFollow
Chenghua Zhang, Liaoning UniversityFollow
Shiyao Xie, Liaoning University
Guangwen Xu, Liaoning University
Jiahua Zhang, Chinese Academy of SciencesFollow
Xiao-Jun Wang, Georgia Southern UniversityFollow

Document Type

Article

Publication Date

12-2010

Publication Title

Materials Research Bulletin

DOI

10.1016/j.materresbull.2010.09.022

Abstract

Red-emitting CaTiO₃:Pr³⁺ phosphors are fabricated using a solid state method and structurally characterized by X-ray diffraction and field emission scanning electron microscopy. The optical properties are investigated using photoluminescence emission, excitation, photoluminescence decay curves, diffused reflectance and thermoluminescence spectra, and persistent phosphorescence decay curves. The optimal fabrication temperatures for photoluminescence and persistent phosphorescence are found at 1200–1300 °C for photoluminescence and 1400 °C for persistent phosphorescence. The energy storage traps for persistent phosphorescence in the system are analyzed based on the dependence of photoluminescence and persistent phosphorescence on sintering temperature. The distribution of energy storage traps is further characterized by thermoluminescence spectra and the parameters of the traps are calculated. Oxygen vacancies as the main trapping centers play the key role for persistent phosphorescence in CaTiO₃:Pr³⁺.

Recommended Citation

Zhang, Xianmin, Chunyan Cao, Chenghua Zhang, Shiyao Xie, Guangwen Xu, Jiahua Zhang, Xiao-Jun Wang. 2010. "Photoluminescence and Energy Storage Traps in CaTiO₃:Pr³⁺." Materials Research Bulletin, 45 (12): 1832-1836. doi: 10.1016/j.materresbull.2010.09.022
https://digitalcommons.georgiasouthern.edu/physics-facpubs/68