Synthesis and Photoluminescence of γ-Al2O3 and C-doped γ-Al2O3 Powders

被引：14

作者：

Wang, S. F. ^{[1
]}

Zhuang, C. F. ^{[1
]}

Yuan, Y. G. ^{[1
]}

Xiang, X. ^{[1
]}

Sun, G. Z. ^{[1
]}

Ding, Q. P. ^{[1
]}

Li, Z. J. ^{[1
]}

Zu, X. T. ^{[1
]}

机构：

[1] Univ Elect Sci & Technol China, Sch Phys Elect, Chengdu 610054, Sichuan, Peoples R China

来源：

TRANSACTIONS OF THE INDIAN CERAMIC SOCIETY | 2014年 / 73卷 / 01期

基金：

中国国家自然科学基金;

关键词：

Chelating agent; Emission peak; C-doped gamma-Al2O3; gamma-Al2O3; RADIATION-DOSIMETRY; LUMINESCENCE; ALUMINA; ALPHA-AL2O3-C; AL2O3-C; CARBON; TL;

D O I：

10.1080/0371750X.2014.890464

中图分类号：

TQ174 [陶瓷工业]; TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

The gamma-Al2O3 and C-doped gamma-Al2O3 powders have been synthesized by a modified polyacrylamide gel method. XRD, SEM and luminescence characterization have been used to study the prepared samples. The results indicate that the particle size and morphology of the samples depend on the choice of chelating agent. In comparison with pure gamma-Al2O3 sample, the intensity of emission peak at 420 nm of C-doped gamma-Al2O3 powders has been obviously enhanced, which is expected to widen the potential applications of C-doped gamma-Al2O3 composite powders. The photoluminescence spectrum detected at lambda(ex)= 386 nm shows a new peak located at 440 nm due to oxygen vancancies distributed on the surface of the composite. Interestingly, the intensity of the emission peak located at 440 nm (C-doped gamma-Al2O3) increases with the decrease of crystallite size.

引用

页码：37 / 42

页数：6

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