Strongly reduced thermal conductivity in hybrid ZnO/nanocellulose thin films

Hua Jin, Giovanni Marin, Ashutosh Giri, Tommi Tynell, Marie Gestranius, Benjamin P. Wilson, Eero Kontturi, Tekla Tammelin, Patrick E. Hopkins, Maarit Karppinen

    Research output: Contribution to journalArticleScientificpeer-review

    11 Citations (Scopus)

    Abstract

    Utilizing a combination of atomic layer deposition and dip-coating techniques, we have incorporated natural nanocellulose fibers into an inorganic matrix in order to create a layered hybrid inorganic-organic thin-film structure. Such layer-engineered hybrid materials with an unorthodox combination of components are highly potential candidates for exciting new properties. Here, we show a more than an order of magnitude reduction in the cross-plane thermal conductivity for ZnO thin films achieved with the regular inclusion of the cellulose nanofiber layers. We foresee that a similar approach as presented here for ZnO could also be applied to other inorganic materials based on earth-abundant elements to influence their thermal transport properties.
    Original languageEnglish
    Pages (from-to)6093-6099
    Number of pages7
    JournalJournal of Materials Science
    Volume52
    Issue number10
    DOIs
    Publication statusPublished - 1 May 2017
    MoE publication typeA1 Journal article-refereed

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