 n
the interview below, we talk with Professor John Rogers
about his paper, "Elastomeric transistor stamps: reversible
probing of charge transport in organic crystals" (Sundar VC,
et al., Science 303[5664]: 1644-6, 12 March 2004).
This paper is a core paper in the Research Front on
Single-Crystal Thin-Film
Transistors in our Special Topic on Organic Thin-Film
Transistors, and currently has 156 citations to its credit.
In
Essential
Science IndicatorsSM,
Professor Rogers’s citation record includes 188 papers cited
a total of 4,484 times to date. These papers can be found in
the fields of Physics, Chemistry, and Materials Science.
Professor Rogers is a Founder Professor of Engineering,
Professor of Materials Science and Engineering, and
Professor of Chemistry at the University of Illinois at
Urbana-Champaign. |
 Would
you please describe the significance of your paper and why it is highly
cited?
|
Professor John A. Rogers's
most-cited paper with 564 cites to date: |
|
Xia YN,
et al., "Unconventional methods for
fabricating and patterning nanostructures," Chem.
Rev. 99(7): 1823-48, July 1999. |
|
|
Professor John A. Rogers's paper(s)
represented in the Research
Front map with 156 cites to date: |
|
Sundar
VC, et al., "Elastomeric transistor stamps:
reversible probing of charge transport in organic
crystals," Science 303(5664): 1644-6, 12
March 2004. |
|
|
Source:
Essential Science Indicators. |
|
The work is highly cited, we believe, for two reasons: (1) the
techniques that we described are useful to others for study of these
kinds of systems and (2) the large, directionally anisotropic
mobilities that we reported in rubrene are of interest. Widespread
adoption of these and related methods provide evidence for the first
reason. Other groups reproducing these results and extending them in
interesting ways support the significance of the latter reason.
How
did you become involved in this research and were there any particular
successes or obstacles that stand out?
We have been interested in organic semiconductor materials for
some time, mainly for their use in flexible electronics. The study
of single-crystal samples of rubrene reported in this paper involved
a collaboration with a materials physics group at Rutgers, aimed at
exploring upper limits in transport properties for more
technologically relevant thin-film materials. The mechanical and
chemical fragility of the crystals demanded new approaches to
examine their electrical properties, in this case through the use of
field-effect transistor structures. The soft contact, "transistor
stamp" approach that we reported enables non-destructive and
reversible measurement of the intrinsic properties of transport on
the pristine surfaces of such samples.
Where
do you see your research and the broader field leading in the future?
The organic electronics community continues to make impressive
progress, not only on the basic science of organic semiconductors
but also on their transition to commercial technologies. In fact, a
large fraction of the research and development in this area now
occurs at companies. Many university groups, including ours, are
shifting their attention to newer classes of advanced materials that
have the potential to offer improved performance.
Do
you foresee practical or commercial applications?
Yes, there are commercial opportunities for organic
semiconductors. The most promising initial applications are in
active matrix circuit backplanes for flexible display systems.
Impressive prototypes of paperlike electrophoretic displays and
flexible organic light-emitting diode devices, together with
associated commercialization plans, have been announced recently by
several companies.
John A. Rogers, Ph.D.
Department of Materials Science and Engineering
University of Illinois at Urbana-Champaign
Urbana, IL, USA
<• Return to
Research Front Map
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A Closer Look...
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Below
are images sent in by Professor John A. Rogers which correspond with the featured
paper, or current research. |
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Figure 1:
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Figure 2:
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<• Return to
Research Front Map |
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ESI Special
Topics: July 2007
Citing URL: http://esi-topics.com/otft/interviews/rfm3_JohnARogers.html
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