Sub-nanometer control of the interlayer spacing in thin films of intercalated rodlike conjugated molecules.
Organic molecular beam co-deposition of rodlike conjugated molecules with an alkylated analogue resulted in thin film structures with layers of alternating semiconducting (conjugated molecular parts) and insulating (alkyl parts) character. By varying the alkylated molecule ratio, we could adjust the distance between conjugated layers with sub-nanometer precision, exploiting the mechanical flexibility of the alkyl chains. Furthermore, due to mutual molecular intercalation, mixed layers containing two conjugated moieties with vastly different electronic properties could be fabricated.
Institut für Physik, Humboldt-Universität zu Berlin, Newtonstrasse 15, D-12489 Berlin, Germany.
Jörn-Oliver
JO
Vogel
Ingo
I
Salzmann
Ricarda
R
Opitz
Steffen
S
Duhm
Bert
B
Nickel
Jürgen P
JP
Rabe
Norbert
N
Koch