Langmuir-Blodgett films composed of size-quantized ZnO nanoparticles:: Fabrication and optical characterization

被引：28
|
作者：
Naszalyi, Livia
Deak, Andras
Hild, Elizabeth
Ayral, Andre
Kovacs, Attila L.
Horvolgyi, Z. [1 ]
机构：
[1] Budapest Univ Technol & Econ, Dept Phys Chem, Ctr Colloid Chem, H-1521 Budapest, Hungary
[2] Univ Montpellier 2, CNRS, ENSCM, UMII,UMR 5635,Inst Europeen Membranes, F-34095 Montpellier 5, France
[3] Eotvos Lorand Univ, Cell Physiol Lab, Dept Anat Cell & Dev Biol, H-1518 Budapest, Hungary
来源：
THIN SOLID FILMS | 2006年 / 515卷 / 04期
关键词：
zinc oxide nanoparticles; Langmuir-Blodgett (LB) films; nanostructures; optical properties;
D O I：
10.1016/j.tsf.2006.05.006
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
ZnO alcosols were synthesized by wet colloid chemical route. The particle diameters were found to be in the range of 3-6 mn studied by small angle X-ray scattering, transmission electron microscopy and UV-Vis spectroscopy. Mono- and multilayered films were prepared by Langmuir-Blodgett (LB) technique on fused silica and silicon supports. The films were studied by UV-Vis spectroscopy and scanning angle reflectometry (SAR). The experimentally determined optical band gap values (3.48-3.70 eV) revealed size-quantized ZnO particles in the LB films. After annealing the multilayers at 400 degrees C for 3 h, a nearly bulk-type semiconductor behaviour of particles was found (3.35-3.33 eV). SAR examinations, however, showed significant porosity (0.493) for the annealed films. (c) 2006 Elsevier B.V. All rights reserved.
引用
收藏
页码：2587 / 2595
页数：9
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