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Tunable optical properties of graphene oxide by tailoring the oxygen functionalities using infrared irradiation

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dc.contributor.author Maiti, R.
dc.contributor.author Midya, A.
dc.contributor.author Narayana, Chandrabhas
dc.contributor.author Ray, S. K.
dc.date.accessioned 2017-02-16T11:32:48Z
dc.date.available 2017-02-16T11:32:48Z
dc.date.issued 2014
dc.identifier.citation Maiti, R; Midya, A; Narayana, C; Ray, SK, Tunable optical properties of graphene oxide by tailoring the oxygen functionalities using infrared irradiation. Nanotechnology 2014, 25 (49), 495704 http://dx.doi.org/10.1088/0957-4484/25/49/495704 en_US
dc.identifier.citation Nanotechnology en_US
dc.identifier.citation 25 en_US
dc.identifier.citation 49 en_US
dc.identifier.issn 0957-4484
dc.identifier.uri https://libjncir.jncasr.ac.in/xmlui/10572/2316
dc.description Restricted Access en_US
dc.description.abstract The modification of individual oxygen functional groups and the resultant optical properties of a graphene oxide suspension were investigated using a controlled photothermal reduction by infrared irradiation. The evolution of the structural and optical characteristics of GO suspensions was obtained from Raman spectra, x-ray photoelectron spectroscopy, optical absorption, and steady state and time-resolved photoluminescence spectroscopy. The results suggest the gradual restoration of sp(2) clusters within the sp(3) matrix with an increase of the reduction time and power density. The yellow-red emission (similar to 610 nm) originated from the defect-assisted localized states in GO due to epoxy/hydroxyl (C-O/-OH) functional groups and that of the blue emission (similar to 500 nm) was ascribed to the carbonyl (C=O)-assisted localized electronic states. With an increase in the reduction time and IR power density, the intensity of the yellow-red emission was found to decrease, with the blue emission being prominent. These experimental findings open up a new dimension for controlling the optical absorption and emission properties of graphene oxide by tailoring the oxygen functional groups, which may lead to the potential application of graphene-based optoelectronic devices. en_US
dc.description.uri 1361-6528 en_US
dc.description.uri http://dx.doi.org/10.1088/0957-4484/25/49/495704 en_US
dc.language English en
dc.language.iso English en_US
dc.publisher IoP Publishing Ltd en_US
dc.rights @IoP Publishing Ltd, 2014 en_US
dc.subject Nanoscience & Nanotechnology en_US
dc.subject Materials Science en_US
dc.subject Applied Physics en_US
dc.subject Graphene Oxide en_US
dc.subject Disorder-Induced Localized State en_US
dc.subject Tunable Emission en_US
dc.subject Deoxygenation en_US
dc.subject Graphite Oxide en_US
dc.subject Reduction en_US
dc.subject Films en_US
dc.subject Photoluminescence en_US
dc.subject Conductivity en_US
dc.subject Transparent en_US
dc.subject Dispersions en_US
dc.subject Nanosheets en_US
dc.subject Sheets en_US
dc.subject Blue en_US
dc.title Tunable optical properties of graphene oxide by tailoring the oxygen functionalities using infrared irradiation en_US
dc.type Article en_US


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