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Room temperature self-assembled growth of vertically aligned columnar copper oxide nanocomposite thin films on unmatched substrates.

Abstract：

:In this work, we report the self-assembled growth of vertically aligned columnar Cu2O + Cu4O3 nanocomposite thin films on glass and silicon substrates by reactive sputtering at room temperature. Microstructure analyses show that each phase in nanocomposite films has the columnar growth along the whole thickness, while each column exhibits the single phase characteristics. The local epitaxial growth behavior of Cu2O is thought to be responsible for such an unusual microstructure. The intermediate oxygen flow rate between those required to synthesize single phase Cu2O and Cu4O3 films produces some Cu2O nuclei, and then the local epitaxial growth provides a strong driving force to promote Cu2O nuclei to grow sequentially, giving rise to Cu2O columns along the whole thickness. Lower resistivity has been observed in such kind of nanocomposite thin films than that in single phase thin films, which may be due to the interface coupling between Cu2O and Cu4O3 columns.

journal_name

Sci Rep

journal_title

Scientific reports

authors

Wang Y,Ghanbaja J,Bruyère S,Soldera F,Horwat D,Mücklich F,Pierson JF

doi

10.1038/s41598-017-10540-6

subject

Has Abstract

pub_date

2017-09-11 00:00:00

pages

11122

issue

1

issn

2045-2322

pii

10.1038/s41598-017-10540-6

journal_volume

7

pub_type

杂志文章

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