High performance ITO nanoparticles as nanoink for printing as a substitute process of sputtering

Atsushi Muramatsu, Kiyoshi Kanie, Takafumi Sasaki, Masafumi Nakaya

研究成果: Conference article査読

2 被引用数 (Scopus)

抄録

Generally, indium-tin-oxides (ITO) thin film is 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 is limited so that ca 20% ITO of the starting target 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 thin film with ITO nanoink, it was successfully fabricated below 200 nm in thickness and the resistivity was drastically decreased below 1.0 × 10-3 Ω cm after heat treatments. GZO nanoink as substitute of ITO has also been developed.

本文言語English
ジャーナルMaterials Research Society Symposium Proceedings
1699
DOI
出版ステータスPublished - 2014
イベント2014 MRS Spring Meeting - San Francisco, United States
継続期間: 2014 4 212014 4 25

ASJC Scopus subject areas

  • 材料科学(全般)
  • 凝縮系物理学
  • 材料力学
  • 機械工学

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