Semitransparent conductive thin porous Au films on a thiol-containing primer layer formed from au nanoparticle ink

Koichi Nagase, Masahiko Kawashima, Masaru Nakagawa

Research output: Contribution to journalArticle

1 Citation (Scopus)

Abstract

We demonstrated that thin porous Au films showing semi-transparency in the region of visible light and electric conductivity were prepared by spincoating an α-terpineol ink containing decanethiol-passivated Au nanoparticles onto silica and silicon substrates modified with 3-mercaptopropyltriethoxysilane and subsequent annealing for sintering the Au nanoparticles. A thin film of the α-terpineol ink was transformed to droplets on unmodified silica and silicon substrates by dewetting after spincoating, while it was changed to a thin porous film on the modified substrates by suppressing a progress of dewetting. The porous structure remained after sintering at 300 °C, resulting in the formation of semitransparent and conductive thin porous Au films with a transmittance of about 40% in the visible light region and a surface resistivity of 10-2 - 10-3ω/square. We also demonstrated that the thin porous Au film was available as a wet etching mask for silicon microprocessing using a hydrogen fluoride (HF) aqueous solution.

Original languageEnglish
Pages (from-to)265-268
Number of pages4
JournalJournal of Photopolymer Science and Technology
Volume23
Issue number2
DOIs
Publication statusPublished - 2010 Sep 30

Keywords

  • 3-mercaptopropyltriethoxysilane
  • Au nanoparticle ink
  • Dewetting control
  • Semitransparent conductive porous Au film

ASJC Scopus subject areas

  • Polymers and Plastics
  • Organic Chemistry
  • Materials Chemistry

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