The influence of dispersing and stabilizing of indium tin oxide nanoparticles upon the characteristic properties of thin films

被引：28

作者：

Reindl, A. ^{[1
]}

Mahajeri, M. ^{[1
]}

Hanft, J. ^{[1
]}

Peukert, W. ^{[1
]}

机构：

[1] Univ Erlangen Nurnberg, Inst Particle Technol, D-91058 Erlangen, Germany

来源：

THIN SOLID FILMS | 2009年 / 517卷 / 05期

基金：

芬兰科学院;

关键词：

Indium tin oxide; ITO; Nanoparticles; Dispersion; Stability; Thin films; Morphology; Transmittance; Conductivity; ELECTRICAL-PROPERTIES; ITO COATINGS; SOL; DECOMPOSITION; MODELS;

D O I：

10.1016/j.tsf.2008.09.071

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Stable suspensions of indium tin oxide nanoparticles were prepared by dispersing for 1 h in ethanol and stabilizing with 2-[2-(2-Methoxyethoxy)ethoxy]acetic acid. Particle size, morphology. and structure were characterized by a combination of dynamic light scattering, high resolution transmission electron microscopy, and X-ray diffraction. Spin coating of the stable suspensions resulted in densely packed films with a high transparency. Dispersing times exceeding 1 h led to a significant "overdispersing" effect, i.e. an increasing aggregate size of the suspensions was observed. Zeta-potential, pH, and X-ray photoelectron spectroscopy measurements were conducted to achieve a detailed understanding of the effect of "overdispersing". With an increasing time of dispersion, i.e. with a decreasing stability of the suspensions, the thin films fabricated by spin coating displayed an increasing pore size distribution and surface roughness. In addition a strong decrease in transmittance and in conductivity was observed. (C) 2008 Elsevier B.V. All rights reserved.

引用

页码：1624 / 1629

页数：6

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