2008 APS March Meeting
Volume 53, Number 2
Monday–Friday, March 10–14, 2008;
New Orleans, Louisiana
Session W22: Focus Session: Organic Photovoltaics and LEDs
2:30 PM–5:18 PM,
Thursday, March 13, 2008
Morial Convention Center
Chair: Chang Ryu, Rensselaer Polytechnic Institute
Abstract ID: BAPS.2008.MAR.W22.9
Abstract: W22.00009 : Organic Semiconductors: devices, growth and ordered assembly*
4:06 PM–4:42 PM
Organic semiconductors are employed in devices such as field-effect
transistors (FETs), light-emitting diodes and photovoltaic cells.
their technological interest, these devices are model systems to
physical processes in organic semiconductors .
Light-emitting field effect transistors (OLEFETs) based on organic
semiconducting films are a novel class of devices integrating the
function with the light emission . I will discuss LEFETs based on
oligothiophenes  and oligoacenes  , in particular their
optoelectronic properties and the films growth physics.
A unique property of organic semiconductors is the ability to
assemblies at surfaces that can be studied by scanning tunneling
(STM). I will discuss the adsorption and self-assembly on
of copper of two organic semiconductors: the linear and planar
quinquethiophene  and the branched non-planar rubrene .
show the ability of organic semiconductors to form fascinating
self-assembled motifs and are of paramount importance to
early stages of growth of organic films.
Organic electrochemical transistors (OECTs) are expected to play
a key role
in future organic electronics. OECTs are ideal candidates for
applications thanks to their low driving voltage and their
operate in aqueous environment. A great deal of work is needed to
the device physics of OECTs and optimize their performance. I
advances in the field drawing examples from studies on devices
based on the
conducting polymer PEDOT:PSS.
 G. G. Malliaras, R. H. Friend, Phys. Today 58, 53, 2005;
 F. Cicoira, C. Santato Adv. Funct. Mater. 17, 3421, 2007;
 F. Cicoira et al. Adv. Mater. 18, 169, 2006;
 F. Cicoira et al. Adv. Funct. Mater. 15, 375, 2005;
 F. Cicoira et al. J. Mater. Chem. in press;
 F. Cicoira et al. Small 2, 1366, 2006;
 F. Cicoira et al. J. Phys. Chem. A in press.
*Support from the European Union under grant MOIF-CT2006-040864 is acknowledged.
To cite this abstract, use the following reference: http://meetings.aps.org/link/BAPS.2008.MAR.W22.9