Doping of bi‐layer graphene by gradually polarizing a ferroelectric polymer. Issue 12 (4th October 2013)

• Record Type: Journal Article
• Authors: Kalbac, Martin; Kong, Jing; Dresselhaus, Mildred S.
• Is Part Of: Physica status solidi. Volume 250:Issue 12(2013:Dec.)
• Page Start: 2649
• Page End: 2652
• Publication Date: 2013-10-04
• Subjects: Solid state physics -- Periodicals; Solids -- Periodicals; Atomic structure -- Periodicals; 530.41
• DOI: 10.1002/pssb.201300053
• Languages: English
• ISSNs: 0370-1972

Abstract

<abstract abstract-type="main" xml:lang="en"> <title> <x xml:space="preserve">Abstract</x> </title> <sec id="pssb201300053-sec-0001" sec-type="section"> <p>The influence of the gradual polarization of a ferroelectric polymer on isotopically labeled bi‐layer graphene has been investigated by Raman spectroscopy. The Raman frequencies of the ¹³C graphene modes are downshifted with respect to the Raman frequencies of ¹²C graphene, which enabled us to study the individual layer components of bi‐layer graphene. The polarization of the ferroelectric polymer has a similar influence on the electron and hole concentration at the ¹³C graphene and the ¹²C graphene layer despite the ¹³C graphene layer being only in direct contact with the ferroelectric polymer. In the Raman experiment the doping of graphene was confirmed by a similar frequency shift of the G modes and similar changes in the intensities of the G′ modes during the electrochemical charging of the ferroelectric polymer.</p> </sec> </abstract>