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Materials 2015, 8(12), 8460-8466; doi:10.3390/ma8125470

Raman Spectra of Luminescent Graphene Oxide (GO)-Phosphor Hybrid Nanoscrolls

School of Information and Communications, Gwangju Institute of Science and Technology, Oryongdong, Buk-gu, Gwangju 61005, Korea
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Author to whom correspondence should be addressed.
Academic Editor: Owen Guy
Received: 20 October 2015 / Revised: 27 November 2015 / Accepted: 30 November 2015 / Published: 4 December 2015
(This article belongs to the Special Issue Graphene)
View Full-Text   |   Download PDF [2773 KB, uploaded 4 December 2015]   |  

Abstract

Graphene oxide (GO)-phosphor hybrid nanoscrolls were synthesized using a simple chemical method. The GO-phosphor ratio was varied to find the optimum ratio for enhanced optical characteristics of the hybrid. A scanning electron microscope analysis revealed that synthesized GO scrolls achieved a length of over 20 μm with interior cavities. The GO-phosphor hybrid is extensively analyzed using Raman spectroscopy, suggesting that various Raman combination modes are activated with the appearance of a low-frequency radial breathing-like mode (RBLM) of the type observed in carbon nanotubes. All of the synthesized GO-phosphor hybrids exhibit an intense luminescent emission around 540 nm along with a broad emission at approximately 400 nm, with the intensity ratio varying with the GO-phosphor ratio. The photoluminescence emissions were gauged using Commission Internationale d'Eclairage (CIE) coordinates and at an optimum ratio. The coordinates shift to the white region of the color spectra. Our study suggests that the GO-phosphor hybrid nanoscrolls are suitable candidates for light-emitting applications. View Full-Text
Keywords: graphene oxide (GO); nanoscrolls; raman analysis; photoluminescence graphene oxide (GO); nanoscrolls; raman analysis; photoluminescence
This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. (CC BY 4.0).

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MDPI and ACS Style

Rani, J.R.; Oh, S.-I.; Jang, J.-H. Raman Spectra of Luminescent Graphene Oxide (GO)-Phosphor Hybrid Nanoscrolls. Materials 2015, 8, 8460-8466.

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