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Lewis
Rothberg
Professor
Ph.D. 1984, Harvard
200 Hutchison
(585)273-4725
rothberg@chem.rochester.edu
Website:
http://www.chem.rochester.edu/Faculty/Rothberg.html
Research Topics:
Polymer electronics, optoelectronic devices, light-emitting diodes,
thin-film transistors, photodetectors, Xerographic photoreceptors,
biological sensors, electrooptic modulators
Research Overview: The goal of our
research group centers on understanding the materials science
necessary to make viable optoelectronic devices from organic materials.
These include, for example, light-emitting diodes, thin-film transistors,
photodetectors, Xerographic photoreceptors, biological sensors
and electrooptic modulators. The promise of organic materials
is that they are amenable to processing and device fabrication
schemes which can make them significantly less expensive than
conventional alternatives. The first research mission involves
study of the fundamental photophysics and charge transport properties
of several classes of organic materials including conjugated polymers
and oligomers, molecularly doped polymers and molecular crystals.
Specifically, measurements of transient excited state spectroscopy,
photoconductivity and photoluminescence are of import to determine
the fundamental performance limits for organic electronics. The
second line of research is the fabrication and characterization
of organic devices. The purpose of these studies, in conjunction
with the fundamental studies, is to understand the mechanism by
which these devices work and to ascertain the practical limits
on them. These are deduced from electrical and spectroscopic measurements
on functioning devices. The final area of experimentation is aimed
at developing new ways to make these devices and systems based
upon them which take advantage of the processibility of organics.
This involves research into the workings of various patterning
and layering schemes such as "self-assembly" to create
useful supramolecular structures. The ultimate vision motivating
this avenue of investigation would be to make circuitry or displays
on plastic using simple process technology which could bypass
the need for expensive lithography and vacuum deposition
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