In Situ Observations of Free-Standing Graphene-like Mono- and Bilayer ZnO Membranes

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Title
In Situ Observations of Free-Standing Graphene-like Mono- and Bilayer ZnO Membranes
Author(s)
Huy Ta Quang; Bachmatiuk, A.; Dianat, A.; Ortmann, F.; Jiong Zhao; Warner, J.H.; Eckert, J.; Cunniberti, G.; Mark H. Rümmeli
Publication Date
2015-11
Journal
ACS NANO, v.9, no.11, pp.11408 - 11413
Publisher
AMER CHEMICAL SOC
Abstract
ZnO in its many forms, such as bulk, thin films, nanorods, nanobelts, and quantum dots, attracts significant attention because of its exciting optical, electronic, and magnetic properties. For very thin ZnO films, predictions were made that the bulk wurtzite ZnO structure would transit to a layered graphene-like structure. Graphene-like ZnO layers were later confirmed when supported over a metal substrate. However, the existence of free-standing graphene-like ZnO has, to the best of our knowledge, not been demonstrated. In this work, we show experimental evidence for the in situ formation of free-standing graphene-like ZnO mono- and bilayer ZnO membranes suspended in graphene pores. Local electron energy loss spectroscopy confirms the membranes comprise only Zn and O. Image simulations and supporting analysis confirm that the membranes are graphene-like ZnO. Graphene-like ZnO layers are predicted to have a wide band gap and different and exciting properties as compared to other ZnO structures. © 2015 American Chemical Society
URI
https://pr.ibs.re.kr/handle/8788114/2246
ISSN
1936-0851
Appears in Collections:
Center for Integrated Nanostructure Physics(나노구조물리 연구단) > Journal Papers (저널논문)
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