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*

*Corresponding author for this work

Research output: Contribution to journalArticleScientificpeer-review

11 Citations (Scopus)
81 Downloads (Pure)

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 - May 2017
MoE publication typeA1 Journal article-refereed

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