Please use this identifier to cite or link to this item:
|Title:||Large scale graphene/hexagonal boron nitride heterostructure for tunable plasmonics|
hexagonal boron nitride
plasma chemical vapor deposition
|Citation:||Zhang, K., Yap, F.L., Li, K., Ng, C.T., Li, L.J., Loh, K.P. (2014-02-12). Large scale graphene/hexagonal boron nitride heterostructure for tunable plasmonics. Advanced Functional Materials 24 (6) : 731-738. ScholarBank@NUS Repository. https://doi.org/10.1002/adfm.201302009|
|Abstract:||Vertical integration of hexagonal boron nitride (h-BN) and graphene for the fabrication of vertical field-effect transistors or tunneling diodes has stimulated intense interest recently due to the enhanced performance offered by combining an ultrathin dielectric with a semi-metallic system. Wafer scale fabrication and processing of these heterostructures is needed to make large scale integrated circuitry. In this work, by using remote discharged, radio-frequency plasma chemical vapor deposition, wafer scale, high quality few layer h-BN films are successfully grown. By using few layer h-BN films as top gate dielectric material, the plasmon energy of graphene can be tuned by electrostatic doping. An array of graphene/h-BN vertically stacked micrometer-sized disks is fabricated by lithography and transfer techniques, and infrared spectroscopy is used to observe the modes of tunable graphene plasmonic absorption as a function of the repeating (G/h-BN)n units in the vertical stack. Interestingly, the plasmonic resonances can be tuned to higher frequencies with increasing layer thickness of the disks, showing that such vertical stacking provides a viable strategy to provide wide window tuning of the plasmons beyond the limitation of the monolayer. An array of graphene/h-BN vertically stacked micrometer-sized disks is fabricated by lithography and transfer techniques, and infrared spectroscopy is used to observe the modes of tunable graphene plasmonic absorption as a function of the repeating (G/h-BN)n units in the vertical stack. © 2013 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim.|
|Source Title:||Advanced Functional Materials|
|Appears in Collections:||Staff Publications|
Show full item record
Files in This Item:
There are no files associated with this item.
checked on Jan 16, 2019
WEB OF SCIENCETM
checked on Jan 16, 2019
checked on Dec 14, 2018
Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.