The fluorescence and thermoluminescence characteristics of α-Al_2O_3:C ceramics  

作　　者：张斌 陆神洲 张浩佳 杨秋红 

机构地区：[1]School of Materials Science and Engineering,Shanghai University

出　　处：《Chinese Physics B》2010年第7期581-584,共4页中国物理B（英文版）

基　　金：supported by the National Natural Science Foundation of China (Grant No. 60578041);the Sciences and Technology Commission Foundation of Shanghai,China (Grant No. 08520707300);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 610 K. 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.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 610 K. 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.

关 键 词：α-Al2O3：C CERAMICS THERMOLUMINESCENCE optical stimulated luminescence 

分 类 号：O482.31[理学—固体物理]