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Electrical characterization of benzenedithiolate molecular electronic devices with graphene electrodes on rigid and flexible substrates

Title
Electrical characterization of benzenedithiolate molecular electronic devices with graphene electrodes on rigid and flexible substrates
Author
정희준
Keywords
molecular electronics; benzeneditholates; multilayer graphene (MLG); flexible electronics; inelastic electron tunneling spectroscopy (IETS); SELF-ASSEMBLED MONOLAYERS; TUNNELING SPECTROSCOPY; LARGE-AREA; JUNCTIONS; FILMS; TRANSPORT; CONTACTS; CONDUCTANCE; FABRICATION; RESISTANCE
Issue Date
2016-02
Publisher
IOP PUBLISHING LTD
Citation
NANOTECHNOLOGY, v. 27, No. 14, Article no. 145301
Abstract
We investigated the electrical characteristics of molecular electronic devices consisting of benzenedithiolate self-assembled monolayers and a graphene electrode. We used the multilayer graphene electrode as a protective interlayer to prevent filamentary path formation during the evaporation of the top electrode in the vertical metal-molecule-metal junction structure. The devices were fabricated both on a rigid SiO2/Si substrate and on a flexible poly(ethylene terephthalate) substrate. Using these devices, we investigated the basic charge transport characteristics of benzenedithiolate molecular junctions in length- and temperature-dependent analyses. Additionally, the reliability of the electrical characteristics of the flexible benzenedithiolate molecular devices was investigated under various mechanical bending conditions, such as different bending radii, repeated bending cycles, and a retention test under bending. We also observed the inelastic electron tunneling spectra of our fabricated graphene-electrode molecular devices. Based on the results, we verified that benzenedithiolate molecules participate in charge transport, serving as an active tunneling barrier in solid-state graphene-electrode molecular junctions.
URI
http://iopscience.iop.org/article/10.1088/0957-4484/27/14/145301/metahttp://hdl.handle.net/20.500.11754/49599
ISSN
0957-4484; 1361-6528
DOI
10.1088/0957-4484/27/14/145301
Appears in Collections:
COLLEGE OF SCIENCE AND CONVERGENCE TECHNOLOGY[E](과학기술융합대학) > APPLIED PHYSICS(응용물리학과) > Articles
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