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Cover Feature: Optically Triggered Control of the Charge Carrier Density in Chemically Functionalized Graphene Field Effect Transistors (Chem. Eur. J. 29/2020)
Author(s) -
Tang Zian,
George Antony,
Winter Andreas,
Kaiser David,
Neumann Christof,
Weimann Thomas,
Turchanin Andrey
Publication year - 2020
Publication title -
chemistry – a european journal
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.687
H-Index - 242
eISSN - 1521-3765
pISSN - 0947-6539
DOI - 10.1002/chem.202001491
Subject(s) - graphene , nanosheet , materials science , surface modification , optoelectronics , benzene , field effect transistor , heterojunction , electron mobility , transistor , charge carrier , molecule , van der waals force , nanotechnology , chemical physics , chemistry , organic chemistry , physics , voltage , quantum mechanics
Non‐destructive functionalization of devices based on two‐dimensional materials via the assembly of van der Waals heterostructures with atomically thin molecular nanosheets is reported. The field‐effect transistor depicted in the cover consists of graphene and ∼1 nm thick molecular nanosheet with grafted azo‐benzene molecules. Irradiation of this device with UV/VIS light results in the conformational changes of azo‐benzene, which induces modification of the charge carrier concentration in the graphene. In this way the transport characteristics are tuned by an optical stimuli. More information can be found in the Communication by A. Turchanin et al. on page 6473.