Poole-Frenkel emission on functionalized, multilayered-packed reduced graphene oxide nanoplatelets

Nanotechnology
Mawin Martinez MartínezAntonio Riul

Abstract

The unique electronic, mechanical and optical properties of graphene make it a remarkable 2D material, widely explored in a plethora of applications. However, graphene zero-band gap and the production of defect-free pristine graphene in large areas still limit some applications. To circumvent these issues, graphene-derived 2D materials have arisen as attractive candidates for low-dimensional systems, which requires a better comprehension of their properties. Here, we report a detailed investigation of the conduction mechanisms of two functionalized reduced graphene oxides (rGOs) nanoplatelets, named GPAH and GPSS. The functionalized rGO nanoplatelets were bottom-up assembled via the layer-by-layer (LbL) technique, enabling molecular-level thickness control of nanostructures with well-defined composition and structure. For the reported multilayered GPAH/GPSS films the charge carriers followed Mott's law, presenting a typical conduction behavior of 2D systems described by the Poole-Frenkel model. The multilayered GPAH/GPSS nanostructure presented a conductivity of 10-4 S cm-1, optical bandgap of ~ 3.3 eV and a relative dielectric permittivity (εr) of 6.4. Temperature-dependent I-V measurements indicated a strong variation of εr w...Continue Reading

References

Jul 21, 2006·The Journal of Physical Chemistry. B·Carlos Cesar Bof BufonJürgen Heinze
Jul 21, 2006·Nature·Sasha StankovichRodney S Ruoff
Dec 25, 2007·Nano Letters·Konstantin N KudinRoberto Car
Jul 26, 2008·Nature Nanotechnology·Dan LiGordon G Wallace
Jun 1, 2010·Nature Nanotechnology·Frank Schwierz
May 9, 2012·ACS Nano·Biddut K Sarker, Saiful I Khondaker
Nov 13, 2012·Scientific Reports·Jingzhi ShangGagik G Gurzadyan
Nov 20, 2012·Nanoscale·Hsin-Cheng HsuKuei-Hsien Chen
Feb 23, 2013·Science·F Javier García de Abajo
Apr 5, 2013·Nature Nanotechnology·Andrea C Ferrari, Denis M Basko
Jan 25, 2014·Advanced Materials·Guangmin ZhouHui-Ming Cheng
Oct 7, 2014·Nature Nanotechnology·Wei HanJaroslav Fabian
Nov 20, 2014·Journal of Physics. Condensed Matter : an Institute of Physics Journal·Mark D ScafettaSteven J May
Oct 28, 2016·Advanced Materials·Usman KhanSang-Woo Kim

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