Title
Electrical characteristics of conjugated self-assembled monolayers in large-area molecular junctions
Author
Kronemeijer, A.J.
Huisman, E.H.
Akkerman, H.B.
Goossens, A.M.
Katsouras, I.
van Hal, P.A.
Geuns, T.C.T.
van der Molen, S.J.
Blom, P.W.M.
de Leeuw, D.M.
TNO Industrie en Techniek
Publication year
2010
Abstract
We have studied the electrical characteristics of close-packed monolayers of conjugated para-phenylene oligomers as a function of molecular length in large-area molecular junctions. An exponential increase in resistance with molecular length is observed, Rexp (βL), with β=0.26±0.04 Å-1 and β=0.20±0.06 Å-1 for dithiol and monothiol derivatives, respectively. The decay coefficients are lower than previously determined experimentally using scanning probe or breakjunction techniques. We tentatively explain the low values by the forced planer geometry of the self-assembled molecules.
Subject
Physics
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TNO identifier
425162
ISSN
0003-6951
Source
Applied Physics Letters, 97 (17)
Article number
No.: 173302
Document type
article