Production of dispersions with small particle size from commercial indium tin oxide powder for the deposition of highly conductive and transparent films

被引：16
作者：
Mahajeri, M. [1 ]
Schneider, A. [1 ]
Baum, M. [2 ,4 ]
Rechtenwald, T. [3 ]
Voigt, M. [1 ]
Schmidt, M. [2 ,3 ,4 ]
Peukert, W. [1 ]
机构：
[1] Univ Erlangen Nurnberg, Inst Particle Technol, D-91058 Erlangen, Germany
[2] Univ Erlangen Nurnberg, Chair Photon Technol, D-91052 Erlangen, Germany
[3] Bayer Laserzentrum GmbH, D-91052 Erlangen, Germany
[4] Univ Erlangen Nurnberg, Erlangen Grad Sch Adv Opt Technol SAOT, D-91052 Erlangen, Germany
来源：
THIN SOLID FILMS | 2012年 / 520卷 / 17期
关键词：
Indium tin oxide; Nanoparticles; Suspension; Conductivity; Laser treatment; Forming gas treatment; STIRRED MEDIA MILLS; ELECTRICAL-PROPERTIES; THIN-FILMS; NANOPARTICLES; ITO; ENHANCEMENT; COATINGS; DEVICES; LAYERS;
D O I：
10.1016/j.tsf.2012.03.121
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
Indium tin oxide (ITO) nanoparticle films for applications in printable electronics were prepared by dip-coating. The dispersion conditions (bead size, stabilizer concentration) strongly affect the particle size of the ITO suspensions and consequently determine the surface morphology of the ITO films. Deposition from ethanolic ITO suspensions with an extremely small particle size of 17 nm to 21 nm led to the formation of extremely smooth and spike-free ITO films with a typical root mean square surface roughness of 4.5 nm +/- 0.2 nm and a high optical transparency above 95%. The effect of annealing with forming gas and CO2 laser treatment on the electrical properties of the ITO films was investigated. Annealing with forming gas and CO2 laser treatment led to a temporary increase in the electrical conductivity of the ITO films by up to a factor of 10 and 6, respectively. Specific conductivities of up to 196 S cm(-1) were obtained for our ITO nanoparticle films under optimized conditions. (C) 2012 Elsevier B.V. All rights reserved.
引用
收藏
页码：5741 / 5745
页数：5
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