Skip to main content

Research Repository

See what's under the surface

Advanced Search

Mobility enhancement of CVD graphene by spatially correlated charges

Turyanska, Lyudmila; Makarovsky, Oleg; Eaves, Laurence; Patanè, Amalia; Mori, N.

Authors

Lyudmila Turyanska

Oleg Makarovsky

Laurence Eaves

Amalia Patanè

N. Mori



Abstract

The manuscript presents a strategy for enhancing the carrier mobility of single layer CVD graphene (CVD SLG) based on spatially correlated charges. Our Monte Carlo simulations, numerical modeling and the experimental results confirm that spatial correlation between defects with opposite charges can provide a means to control independently the carrier concentration and mobility of planar field effect transistors in which graphene is decorated with a layer of colloidal quantum dots (QDs). We show that the spatial correlation between electrically charged scattering centres close to the graphene/SiO2 interface and the localised charges in a QD layer can smooth out the electrostatic potential landscape, thus reducing scattering and enhancing the carrier mobility. The QD capping molecules influence the distribution and correlation of electrical charges in the vicinity of SLG and provide a means of tuning the carrier concentration and increasing the carrier mobility in graphene. These results represent a significant conceptual advance and provide a novel strategy for control of the electronic properties of 2D materials that could accelerate their utilization in optoelectronic devices.

Journal Article Type Article
Publication Date Feb 1, 2017
Journal 2D Materials
Electronic ISSN 2053-1583
Publisher IOP Publishing
Peer Reviewed Peer Reviewed
Volume 4
Issue 2
Article Number 025026
APA6 Citation Turyanska, L., Makarovsky, O., Eaves, L., Patanè, A., & Mori, N. (2017). Mobility enhancement of CVD graphene by spatially correlated charges. 2D Materials, 4(2), https://doi.org/10.1088/2053-1583/aa55b4
DOI https://doi.org/10.1088/2053-1583/aa55b4
Publisher URL http://iopscience.iop.org/article/10.1088/2053-1583/aa55b4/meta
Copyright Statement Copyright information regarding this work can be found at the following address: http://creativecommons.org/licenses/by/4.0

Files

Turyanska_2017_2D_Mater._4_025026.pdf (1.6 Mb)
PDF

Copyright Statement
Copyright information regarding this work can be found at the following address: http://creativecommons.org/licenses/by/4.0





You might also like



Downloadable Citations

;