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

页码：2072 / 2078

页数：7

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