workshop aims at bringing together researchers with a strong interest in the
intrinsic electronic properties of organic semiconductors. A main focus will be
on the transport properties of high-quality crystals measured by means of
different techniques (field effect transistors, space charge limited current
spectroscopy, time of flight measurements, etc.). Other topics of interest
(e.g. optical and electron spectroscopy), providing insight in the microscopic
physics of organic semiconductors will be discussed as well.
attention will be devoted to the experimental aspects and techniques, including
crystal growth, and all aspects of sample preparation and characterization,
particularly critical in this field. We intend to make a distinction between
high-quality materials and the materials normally used in organic electronic
applications since the latter are only of limited use in the study of the
fundamental physics of these materials, owing to the presence of chemical and
participation of a number of selected theorists will clarify the present
theoretical status in the field and address open issues for future research.
believe that, also because of the confusion originated from the well-known case
of scientific misconduct that has occurred at the Lucent laboratories, a
workshop focussed on the intrinsic electronic properties of organic
semiconductors is now particularly timely. There exist a number of groups
actively involved in the study of the transport properties of high-quality
single crystals of organic molecules and interesting results are starting to
physical and technical issues should now be addressed. These include:
the nature of the interaction between charge
carriers and lattice vibrations (are polarons being formed?) and its dependence
on carrier density.
the role of electron-electron interaction at
low and high density (high temperature Wigner crystallization, Mott-Hubbard
like correlations, etc.)
a realistic assessment of the possibilities
offered by electrostatic doping (which charge densities can be achieved? what
are the best dielectric materials? what technical problems can be envisaged?).
together key researchers in the field will help to clarify the present
situation and to establish a community where information can be exchanged
effectively, results analyzed in detail and future prospects discussed openly.
Although organic semiconductors have been studied for a long time, work on
high-purity materials is mainly starting now. For these reasons the field has a
large potential for future research and it is worth to stimulate work in this