Optical, phonon and fluorescence properties of PVA-GO-ZnO free standing films

We report optical properties of ZnO nanorods dispersed graphene oxide (GO)—polyvinyl alcohol (PVA) free standing composite films (PVA-GO-ZnO) which are prepared by ex-situ method. It has been found that the loading of ZnO nanorods altered the influence of GO on PVA matrix. Optical absorption results...

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Bibliographic Details
Published in:Applied physics. A, Materials science & processing Materials science & processing, 2019-12, Vol.125 (12), p.1-7, Article 847
Main Author: Karthikeyan, B.
Format: Article
Language:English
Subjects:
Applied physics
Characterization and Evaluation of Materials
Condensed Matter Physics
Covalent bonds
Fluorescence
Graphene
Hydroxyl groups
Machines
Manufacturing
Materials science
Nanorods
Nanotechnology
Optical and Electronic Materials
Optical properties
Photoluminescence
Physics
Physics and Astronomy
Polyvinyl alcohol
Processes
Surfaces and Interfaces
Thin Films
Zinc oxide
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Summary:We report optical properties of ZnO nanorods dispersed graphene oxide (GO)—polyvinyl alcohol (PVA) free standing composite films (PVA-GO-ZnO) which are prepared by ex-situ method. It has been found that the loading of ZnO nanorods altered the influence of GO on PVA matrix. Optical absorption results show the band related to π → π* transitions of aromatic C–C bonds in GO, which is shifted to higher wavelength side when loading ZnO in GO-PVA. Raman spectral studies show that the incorporation of ZnO in GO-PVA film decreases the interaction of GO with hydroxyl groups in PVA matrix. Steady state and time resolved photoluminescence show the suppression of PVA luminescence and decay time due to interactions with GO, which is recovered after the loading of ZnO in the PVA-GO.
ISSN:0947-8396
1432-0630
DOI:10.1007/s00339-019-3136-1