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Enhanced optical properties of ZnO and CeO2-coated ZnO nanostructures achieved via spherical nanoshells growth on a polystyrene template

Eltayeb, Asmaa and Daniels, Stephen and McGlynn, Enda (2017) Enhanced optical properties of ZnO and CeO2-coated ZnO nanostructures achieved via spherical nanoshells growth on a polystyrene template. Scientific Reports, 7 . p. 3737. ISSN 2045-2322

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Abstract

In this paper, ZnO, CeO2 and CeO2-coated ZnO nanostructures were synthesised by simple and efficient low temperature wet chemical methods on Si (100) and quartz substrates. The ZnO films were prepared by a drop coating deposition method. This was then combined with a thin layer of the redox active material CeO2 to form CeO2-coated ZnO films. Spherical ZnO nanoshell structures and CeO2-coated ZnO nanoshells have been prepared using polystyrene (PS) sphere monolayer templates. The structural properties and morphologies of the nanostructures were analysed by x-ray diffraction (XRD) and scanning electron microscopy (SEM). The nanostructure compositions are studied in more detail using secondary ion mass spectroscopy (SIMS). The optical properties of the nanostructures were measured using ultraviolet-visible (UV-Vis) absorption spectroscopy in order to ascertain the effects of the nanoshell structures and the whispering gallery modes associated with these structures on the optical properties of the deposits. Our data show UV and visible light absorption was very significantly enhanced due to this nanostructuring.

Item Type:Article (Published)
Refereed:Yes
Uncontrolled Keywords:CeO2; ceria; ZnO; nanoshell; NSL
Subjects:Engineering > Materials
Physical Sciences > Thin films
Physical Sciences > Spectrum analysis
Physical Sciences > Nanotechnology
Physical Sciences > Photonics
Physical Sciences > Crystallography
DCU Faculties and Centres:Research Initiatives and Centres > National Centre for Plasma Science and Technology (NCPST)
DCU Faculties and Schools > Faculty of Science and Health > School of Physical Sciences
Publisher:Nature Publishing Group
Official URL:http://dx.doi.org/10.1038/s41598-017-03905-4
Copyright Information:© Nature
Use License:This item is licensed under a Creative Commons Attribution-NonCommercial-Share Alike 3.0 License. View License
Funders:Irish government’s PRTLI cycle 5, National Development Plan 2007-2014 assisted by the European Regional Development Fund.
ID Code:21847
Deposited On:06 Jul 2017 16:47 by Enda McGlynn. Last Modified 06 Jul 2017 16:47

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