Photoluminescence of oxygen vacancies in nanostructured Al2O3

被引：38

作者：

Kostyukov, Anton I. ^{[1
]}

Zhuzhgov, Aleksey V. ^{[1
]}

Kaichev, Vasily V. ^{[1
,2
]}

Rastorguev, Alexander A. ^{[1
]}

Snytnikov, Vladimir N. ^{[1
]}

Snytnikov, Valeriy N. ^{[1
,2
]}

机构：

[1] Boreskov Inst Catalysis, Lavrentieva Ave 5, Novosibirsk 630090, Russia

[2] Novosibirsk State Univ, Pirogova Str 2, Novosibirsk 630090, Russia

来源：

OPTICAL MATERIALS | 2018年 / 75卷

基金：

俄罗斯基础研究基金会;

关键词：

Al2O3; nanoparticles; Photoluminescence; Oxygen vacancies; Laser evaporation; ALUMINA SINGLE-CRYSTALS; OPTICAL-PROPERTIES; ELECTRONIC EXCITATIONS; ANODIC ALUMINA; LUMINESCENCE; ALPHA-AL2O3; OXIDE; DEFECTS; IONS; NANOPARTICLES;

D O I：

10.1016/j.optmat.2017.11.040

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Oxygen vacancies represented by F and F-2 centers were detected in faceted Al2O3 nanoparticles with the size less than 10 nm by a photoluminescence method. Al2O3 nanoparticles with such intrinsic defects were synthesized by evaporation of cz-Al2O3 in flowing helium using a continuous wave CO2 laser. The XRD analysis showed that the crystal structure of Al2O3 nanoparticles is represented mostly by the low temperature gamma- and/or eta-A1203 phases. The luminescence maxima of F and F-2 centers in the Al2O3 nanoparticles were found to be 3.07 and 2.47 eV. These values are close to the luminescence maxima of F and F-2 centers in bulk alpha-Al2O3. (C) 2017 Elsevier B.V. All rights reserved.

引用

页码：757 / 763

页数：7

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