Premium
Carrier Accumulation in Graphene with Electron Donor/Acceptor Molecules
Author(s) -
Akiyoshi Hidehiko,
Goto Hidenori,
Uesugi Eri,
Eguchi Ritsuko,
Yoshida Yukihiro,
Saito Gunzi,
Kubozono Yoshihiro
Publication year - 2015
Publication title -
advanced electronic materials
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 2.25
H-Index - 56
ISSN - 2199-160X
DOI - 10.1002/aelm.201500073
Subject(s) - graphene , materials science , molecule , acceptor , doping , homo/lumo , chemical physics , adsorption , electron acceptor , molecular orbital , fermi level , electron , nanotechnology , physics , chemistry , photochemistry , condensed matter physics , optoelectronics , quantum mechanics
Electron transfer between graphene and an adsorbed molecule is systematically studied using a variety of electron acceptor/donor molecules. Doping efficiency is determined by the difference between the Fermi energy of graphene and the lowest unoccupied molecular orbital or highest unoccupied molecular orbital level of the molecule. The maximum carrier density accumulated by molecular adsorption is limited by the small density of states in graphene.