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 |