Photoluminescence of Cr3+ in nanostructured Al2O3 synthesized by evaporation using a continuous wave CO2 laser

被引：21
|
作者：
Kostyukov, Anton [1 ]
Baronskiy, Mark [1 ]
Rastorguev, Alexander [1 ]
Snytnikov, Valeriy [1 ,2 ]
Snytnikov, Vladimir [1 ]
Zhuzhgov, Aleksey [1 ]
Ishchenko, Arcady [1 ]
机构：
[1] Boreskov Inst Catalysis, Novosibirsk 630090, Russia
[2] Novosibirsk State Univ, Novosibirsk 630090, Russia
来源：
RSC ADVANCES | 2016年 / 6卷 / 03期
基金：
俄罗斯基础研究基金会;
关键词：
LASER-ABLATION; NANOPARTICLES; LUMINESCENCE; RUBY;
D O I：
10.1039/c5ra19455e
中图分类号：
O6 [化学];
学科分类号：
0703 ;
摘要：
Laser evaporation of an Al2O3 target by a continuous wave CO2 laser was used to obtain nanostructured Al2O3 condensates with a mean crystallite size of 6 nm, one nominally pure and another doped with chromium at a concentration of 0.2 wt%. Photoluminescence of Cr3+ was observed in all the samples of the Al2O3 condensate. In all the Al2O3 condensates the alpha-Al2O3 phase, undetectable by XRD and HRTEM, was revealed by Cr3+ probing. Photoluminescence studies with the use of Cr3+ as a probe also revealed the theta- and (gamma + delta)-crystal phases of Al2O3; this finding was supported by XRD and HRTEM data.
引用
收藏
页码：2072 / 2078
页数：7
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