TY - JOUR
T1 - Electrical Transport Study of Phenylene-Based π-Conjugated Molecules in a Three-Terminal Geometry
AU - Lee, Jeong O.
AU - Lientschnig, Günther
AU - Wiertz, Frank G H
AU - Struijk, Martin
AU - Janssen, Réne A J
AU - Egberink, Richard
AU - Reinhoudt, David N.
AU - Grimsdale, Andrew C.
AU - Müllen, Klaus
AU - Hadley, Peter
AU - Dekker, Cees
PY - 2003/12
Y1 - 2003/12
N2 - We fabricated three-terminal devices with conjugated molecules. Two different device layouts were used to measure both very short molecules (with one or two benzene rings) and relatively long ones (as long as 8 nm). To achieve an optimum gate effect, we used aluminum gates covered with a very thin native oxide layer. Molecules with thiol end groups were positioned between the source and drain electrodes by self-assembly. The device yield was low for short molecules, most likely due to defects in the self-assembled monolayers. Most of the devices made with short molecules did not show any gate effect at all; a small gate effect was only observed in two samples made with 1,3-benzenedithiol. Some devices showed clear negative differential conductance peaks. In some devices made with long molecules, we observed a small change of conductance with gate voltage.
AB - We fabricated three-terminal devices with conjugated molecules. Two different device layouts were used to measure both very short molecules (with one or two benzene rings) and relatively long ones (as long as 8 nm). To achieve an optimum gate effect, we used aluminum gates covered with a very thin native oxide layer. Molecules with thiol end groups were positioned between the source and drain electrodes by self-assembly. The device yield was low for short molecules, most likely due to defects in the self-assembled monolayers. Most of the devices made with short molecules did not show any gate effect at all; a small gate effect was only observed in two samples made with 1,3-benzenedithiol. Some devices showed clear negative differential conductance peaks. In some devices made with long molecules, we observed a small change of conductance with gate voltage.
KW - Conjugated molecules
KW - Molecular electronics
KW - Transistor
UR - http://www.scopus.com/inward/record.url?scp=9144258396&partnerID=8YFLogxK
U2 - 10.1196/annals.1292.008
DO - 10.1196/annals.1292.008
M3 - Article
C2 - 14976014
AN - SCOPUS:9144258396
SN - 0077-8923
VL - 1006
SP - 122
EP - 132
JO - Annals of the New York Academy of Sciences
JF - Annals of the New York Academy of Sciences
ER -