中国物理B ›› 2010, Vol. 19 ›› Issue (7): 77805-077805.doi: 10.1088/1674-1056/19/7/077805

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The fluorescence and thermoluminescence characteristics of α-Al2O3:C ceramics

张斌, 陆神洲, 张浩佳, 杨秋红   

  1. School of Materials Science and Engineering, Shanghai University, Shanghai 200072, China
  • 出版日期:2010-07-15 发布日期:2010-07-15
  • 基金资助:
    Project supported by the National Natural Science Foundation of China (Grant No. 60578041), the Sciences and Technology Commission Foundation of Shanghai, China (Grant No. 08520707300) and the Key Basic Research Project of Science and Technology of Shanghai (Grant No. 09JC1406500).

The fluorescence and thermoluminescence characteristics of $\alpha$-Al2O3:C ceramics

Zhang Bin(张斌)a), Lu Shen-Zhou(陆神洲)a), Zhang Hao-Jia(张浩佳)a), and Yang Qiu-Hong(杨秋红) a)†   

  1. School of Materials Science and Engineering, Shanghai University, Shanghai 200072, China
  • Online:2010-07-15 Published:2010-07-15
  • Supported by:
    Project supported by the National Natural Science Foundation of China (Grant No. 60578041), the Sciences and Technology Commission Foundation of Shanghai, China (Grant No. 08520707300) and the Key Basic Research Project of Science and Technology of Shanghai (Grant No. 09JC1406500).

摘要: This paper reports that polycrystalline α-Al2O3:C ceramics are fabricated by conventional ceramics process. The excitation, emission spectra, thermoluminescence (TL) and optical stimulated luminescence (OSL) of α-Al2O3:C polycrystalline ceramics are investigated. There exists 410nm maximum emission peak which is caused by recombination of an electron with F+ centre to produce an excited F centre. The samples show three clear TL glow peaks at 405, 493 and 610K. The attenuation constant of exponentially decaying fast component (τ1) and slow component(τ2) of OSL curve are 8.43s and 41.73s, respectively. Those fluorescence and thermoluminescence characteristics are similar with α-Al2O3:C crystal.

Abstract: This paper reports that polycrystalline $\alpha$-Al2O3:C ceramics are fabricated by conventional ceramics process. The excitation, emission spectra, thermoluminescence (TL) and optical stimulated luminescence (OSL) of $\alpha$-Al2O3:C polycrystalline ceramics are investigated. There exists 410nm maximum emission peak which is caused by recombination of an electron with F+ centre to produce an excited F centre. The samples show three clear TL glow peaks at 405, 493 and 610K. The attenuation constant of exponentially decaying fast component ($\tau$1) and slow component($\tau$2) of OSL curve are 8.43s and 41.73s, respectively. Those fluorescence and thermoluminescence characteristics are similar with $\alpha$-Al2O3:C crystal.

Key words: $\alpha$-Al2O3:C, ceramics, thermoluminescence, optical stimulated luminescence

中图分类号:  (Other solid inorganic materials)

  • 78.55.Hx
78.60.Kn (Thermoluminescence) 81.05.Je (Ceramics and refractories (including borides, carbides, hydrides, nitrides, oxides, and silicides))