Quantum Size Effect and very localized random laser in ZnO@mesoporous silica nanocomposite following a two-photon absorption process

被引：6

作者：

Bouvy, Claire ^{[1
]}

Chelnokov, Evgeny ^{[2
]}

Marine, Wladimir ^{[3
]}

Sporken, Robert ^{[4
]}

Su, Bao-Lian ^{[1
,5
]}

机构：

[1] Univ Namur, FUNDP, Lab Inorgan Mat Chem, B-5000 Namur, Belgium

[2] Russian Acad Sci, Inst Appl Phys, Nizhnii Novgorod 603950, Russia

[3] Univ Aix Marseille 2, CNRS, Ctr Rech Mat Condensee & Nanosci, UPR 7251, Marseille, France

[4] Univ Namur, FUNDP, Lab Phys Mat Elect, B-5000 Namur, Belgium

[5] Wuhan Univ Technol, State Key Lab Adv Technol Mat Synth & Proc, Wuhan 430070, Peoples R China

来源：

JOURNAL OF NON-CRYSTALLINE SOLIDS | 2009年 / 355卷 / 18-21期

关键词：

II-VI semiconductors; Laser-matter interactions; Optical spectroscopy; STEM/TEM; TEM/STEM; Powders; Nano-composites; Nanoparticles; Quantum wells; wires and dots; Lasers; Luminescence; Non-linear optics; Silica; X-ZEOLITE MATRIX; PHOTOLUMINESCENT PROPERTIES; OPTICAL-PROPERTIES; ZINC-OXIDE; CMI-1; NANOPARTICLES; NANOCRYSTALS; LUMINESCENCE; CHEMISTRY; LIGHT;

D O I：

10.1016/j.jnoncrysol.2009.01.053

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：

ZnO@mesoporous silica nanocomposite was prepared by the impregnation of a CMI-1 material in a Zn(NO3)(2) solution followed by calcination under O-2. Intensive characterization was carried out by N-2 adsorption-desorption measurements, scanning and transmission electron microscopy. The optical properties of the ZnO@mesoporous silica nanocomposite were studied by photoluminescence spectroscopy. Quantum Size Effect was firstly demonstrated by subjecting the sample to a 254 nm excitation light, and was further confirmed by using a 680 nm excitation laser beam, which implies a two-photon absorption process. By focusing the 680 nm laser beam on different places in the sample, a very localized random laser effect, also induced by a two-photon absorption process, was detected. (C) 2009 Elsevier B.V. All rights reserved.

引用

页码：1152 / 1156

页数：5

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