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Dispersion and microwave processing of nano-sized ITO powder for the fabrication of transparent conductive oxides
journal contribution
posted on 2016-10-07, 09:46 authored by Shaghayegh Ghanizadeh, Nirmal Peiris, D.S.Y. (Subhashi) Jayathilake, David HuttDavid Hutt, Upul Wijayantha-Kahagala-Gamage, Darren SoutheeDarren Southee, Paul ConwayPaul Conway, P. Marchand, J.A. Darr, I.P. Parkin, C.J. CarmaltAqueous dispersions of tin-doped indium oxide (ITO) nanopowder were prepared and the effect of the addition of PEG 400, Tween 80 and β-alanine as dispersants was investigated using zeta potential and particle size distribution measurements. Both PEG 400 and β-alanine were found to produce stable dispersions that were used to deposit ITO thin films on glass substrates by dip and spin coating methods. The ITO thin films were heat-treated using both conventional and microwave heat treatment in order to improve the inter-particle connections and hence the resistivity and transparency of the films. All the films exhibited an average transmittance of >80% over the visible spectrum after being subjected to the heat treatment process. ITO films prepared with no dispersant showed very high resistivity values for both heating methods, however addition of 2 wt% PEG 400 to the dispersion yielded a reduction in the resistivity values to 1.4×10−1 Ω cm and 3.8×10−2 Ω cm for conventionally and microwave treated films, respectively. The surface morphological studies confirmed that addition of dispersants improved the film uniformity and inter-particle connections of the ITO films considerably.
Funding
This research was funded by the UK Engineering and Physical Sciences Research Council (EPSRC) under grant number EP/L017709/1.
History
School
- Mechanical, Electrical and Manufacturing Engineering
Published in
Ceramics InternationalVolume
42Issue
16Pages
18296-18302Citation
GHANIZADEH, S. ... et al, 2016. Dispersion and microwave processing of nano-sized ITO powder for the fabrication of transparent conductive oxides. Ceramics International, 42 (16), pp. 18296-18302.Publisher
© ElsevierVersion
- AM (Accepted Manuscript)
Publisher statement
This work is made available according to the conditions of the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International (CC BY-NC-ND 4.0) licence. Full details of this licence are available at: https://creativecommons.org/licenses/by-nc-nd/4.0/Acceptance date
2016-08-25Publication date
2016-09-01Copyright date
2016Notes
This paper was accepted for publication in the journal Ceramics International and the definitive published version is available at http://dx.doi.org/10.1016/j.ceramint.2016.08.157.ISSN
0272-8842Publisher version
Language
- en