2016-Sustainable Industrial Processing Summit
SIPS 2016 Volume 6: Yagi Intl. Symp. / Metals & Alloys Processing
| Editors: | Kongoli F, Akiyama T, Nogami H, Saito K, Fujibayashi A |
| Publisher: | Flogen Star OUTREACH |
| Publication Year: | 2016 |
| Pages: | 480 pages |
| ISBN: | 978-1-987820-46-1 |
| ISSN: | 2291-1227 (Metals and Materials Processing in a Clean Environment Series) |
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Recent Research Trend of Nanoparticulate Advanced Functional Ceramics Materials
Atsushi Muramatsu1;1TOHOKU UNIVERSITY, Sendai, Japan;
Type of Paper: General Plenary
Id Paper: 142
Topic: 3
Abstract:
Recent Research Trend will be presented for nanoparticulate advanced functional ceramics materials, in particular, in our laboratory.　Here, we will focus our attention on transparent conductive oxides (TCO). Among TCO, the indium-tin-oxides (ITO) thin film is generally prepared by the sputtering process with ITO target, but only 20% of ITO yielded from the target is deposited on the substrate. Namely, about 80% ITO is exhausted by the deposition elsewhere far from the substrate. The recycling process of indium is limited so that ca 20% ITO of the starting material is lost without any recovery. Even if the recycling of ITO has been carried out in this process, we should prepare ITO target of 5 times more than apparent use of ITO on film. If we change it to printing process from the sputtering, the reduction in ITO use is expected as ca. 50%, considering the increase in film thickness by printing. Our target technology also includes ITO nanoink for the project. As a result, monodispersed ITO nanoparticles (NPs) with a cubic shape were fabricated by using quaternary ammonium hydroxide-assisted metal hydroxide organogels. These NPs have perfect uniformity in size with beautiful shape, and perfect single crystalline structure including Sn. As we were attempted to make a thin film with ITO nanoink, it was successfully fabricated below 200 nm in thickness and the resistivity was drastically decreased below 1.0 x 10-3 ohm cm after heat treatments. GZO nanoink as substitute of ITO has also been developed.