Influence of carbon on the thermoluminescence and optically stimulated luminescence of alpha-al2o3:c crystals
文献类型：期刊论文
| 作者 | Yang, Xin-Bo1,4; Li, Hong-Jun1; Bi, Qun-Yu3,4; Cheng, Yan3,4; Tang, Qiang2; Xu, Jun1 |
| 刊名 | Journal of applied physics
 |
| 出版日期 | 2008-12-15 |
| 卷号 | 104期号:12页码:6 |
| 关键词 | Absorption coefficients Alumina Carbon Doping profiles F-centres Photoluminescence Thermoluminescence Vacancies (crystal) |
| ISSN号 | 0021-8979 |
| DOI | 10.1063/1.3050344 |
| 通讯作者 | Yang, xin-bo(yangxinbo2000@163.com) |
| 英文摘要 | Alpha-al2o3:c crystal shows excellent thermoluminescence (tl) and optically stimulated luminescence (osl) properties but the real role carbon plays in this crystal is still not clearly understood so far. in this work, alpha-al2o3:c crystal doping with different amounts of carbon were grown by the temperature gradient technique, and tl and osl properties of as-grown crystals were investigated. additionally, a mechanism was proposed to explain the role of carbon in forming the tl and osl properties of alpha-al2o3:c. tl and osl intensities of as-grown crystals increase with the increasing amount of carbon doping in the crystal, but no shift is found in the glow peak location at 465 k. as the amount of carbon doping in the crystals decreases, osl decay rate becomes faster. with the increase in heating rate, the integral tl response of as-grown crystals decreases and glow peak shifts to higher temperatures. tl response decrease rate increases with the increasing amount of carbon doping in the crystals. all the tl and osl response curves of as-grown crystals show linear-sublinear-saturation characteristic, and osl dose response exhibits higher sensitivity and wider linear dose range than that of tl. the crystal doping with 5000 ppm carbon shows the best dosimetric properties. carbon plays the role of a dopant in alpha-al2o3:c crystal and four-valent carbon anions replace the two-valent anions of oxygen during the crystal growth process, and large amounts of oxygen vacancies were formed, which corresponds to the high absorption coefficient of f and f+ centers in the crystals. |
| WOS关键词 | F-CENTER ; AL2O3-C |
| WOS研究方向 | Physics |
| WOS类目 | Physics, Applied |
| 语种 | 英语 |
| WOS记录号 | WOS:000262225100013 |
| 出版者 | AMER INST PHYSICS |
| URI标识 | http://www.irgrid.ac.cn/handle/1471x/2391998 |
| 专题 | 中国科学院大学 |
| 通讯作者 | Yang, Xin-Bo |
| 作者单位 | 1.Chinese Acad Sci, Shanghai Inst Ceram, Shanghai 201800, Peoples R China 2.Zhongshan Univ, Dept Phys, Guangzhou 510275, Guangdong, Peoples R China 3.Chinese Acad Sci, Shanghai Inst Opt & Fine Mech, Shanghai 201800, Peoples R China 4.Chinese Acad Sci, Grad Sch, Beijing 100039, Peoples R China |
| 推荐引用方式 GB/T 7714 | Yang, Xin-Bo,Li, Hong-Jun,Bi, Qun-Yu,et al. Influence of carbon on the thermoluminescence and optically stimulated luminescence of alpha-al2o3:c crystals[J]. Journal of applied physics,2008,104(12):6. |
| APA | Yang, Xin-Bo,Li, Hong-Jun,Bi, Qun-Yu,Cheng, Yan,Tang, Qiang,&Xu, Jun.(2008).Influence of carbon on the thermoluminescence and optically stimulated luminescence of alpha-al2o3:c crystals.Journal of applied physics,104(12),6. |
| MLA | Yang, Xin-Bo,et al."Influence of carbon on the thermoluminescence and optically stimulated luminescence of alpha-al2o3:c crystals".Journal of applied physics 104.12(2008):6. |
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来源：中国科学院大学
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