Electrochemically Active Thin Carbon Films with Enhanced Adhesion to Silicon Substrates

Pengfei Niu, Laura Asturias-Arribas, Martí Gich, César Fernández-Sánchez, Anna Roig

    Research output: Contribution to journalArticleResearchpeer-review

    3 Citations (Scopus)

    Abstract

    © 2016 American Chemical Society. Thin carbon films deposited on technologically relevant substrates, such as silicon wafers, can be easily implemented in miniaturized electrochemical devices and used for sensing applications. However, a major issue in most carbon films is the weak film/substrate adhesion that shortens the working device lifetime. This paper describes the facile preparation of robust thin carbon films on silicon substrates by one-pot sol-gel synthesis. The improved adherence of these carbon films is based on the incorporation of silica through the controlled synthesis of a resorcinol/formaldehyde gel modified with aminopropyltriethoxysilane. The films demonstrate excellent adhesion to the silicon substrate, good homogeneity, excellent electrical conductivity and superior electrochemical performance. Moreover, this approach opens the door to the fabrication of carbon thin-film electrodes by photolithographic techniques.
    Original languageEnglish
    Pages (from-to)31092-31099
    JournalACS Applied Materials and Interfaces
    Volume8
    Issue number45
    DOIs
    Publication statusPublished - 16 Nov 2016

    Keywords

    • adhesion
    • carbon films
    • electrochemical sensors
    • hybrid materials
    • silica
    • sol-gel

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