Printable porous silicon films produced by depositing silicon nanoparticle inks

2017 Fiscal Year Final Research Report

• Project/Area Number: 15K05994
• Research Category: Grant-in-Aid for Scientific Research (C)
• Allocation Type: Multi-year Fund
• Section: 一般
• Research Field: Electronic materials/Electric materials
• Research Institution: University of Hyogo
• Principal Investigator: Sato Seiichi 兵庫県立大学, 物質理学研究科, 助教 (90326299)
• Project Period (FY): 2015-04-01 – 2018-03-31
• Keywords: シリコン / 表面修飾 / ナノコロイド / ナノ粒子インク / プリンテッドエレクトロニクス / ガスセンサー / 光導電性

Outline of Final Research Achievements

Silicon (Si) inks for forming porous Si films were produced by modifying the Si ink particle surface with various organic molecules. The obtained films were semiconductive, and showed gas sensing properties: the electrical conductivity changed during exposure to oxidizing gas (oxygen and carbon dioxide) or reducing gas (carbon monoxide). Besides, the films showed photoconductivity peculiar to Si nanostructures: The conductivity largely increased during exposure to light the photon energy of which was higher than twice the bandgap energy.

Free Research Field

コロイド科学