Nan-Rong Chiou
PREVIOUS INSTITUTION:
BS, Tunghai University, Taichung,
Taiwan; RA, Institute of Chemistry, Academia Sinica,
Taipei, Taiwan, 2000; MS, The Ohio State University, 2002
DATE JOINED GROUP: September 2000
AREAS OF STUDY: Nanofibers based on conductive
polymers; All-polymer field effect devices (FEDs)
based on highly conductive polymers
EMAIL: osunrc@yahoo.com
CURRENT RESEARCH
All-polymer field effect devices (FEDs) based on
highly doped conductive polymers are reported. These FEDs
are fabricated from line pattern, in-situ polymerization, optical adhesive
construction and spin-coating construction. High turn-off voltage, slow
response time can be found in optical adhesive processing. After the
optimization of the fabrication, spin-coating processing exhibits many
advantages to extend these FEDs to the commercial
applications.
Different highly doped conductive homopolymers and
copolymers, such as poly (o-toluidine)/Cl-, poly (aniline-co-pyrrole)/Cl-, poly (aniline-co-2-fluoroaniline)/Cl-,
polyaniline/Cl-, polypyrrole/Cl-, polypyrrole/PSS-,
poly (pyrrole-co-N-methylpyrrole)/Cl-,
poly (pyrrole-co-o-anisidine)/Cl-,
are studied here to demonstrate that these kinds of highly doped conductive
polymers are sensitive to an electric field. I-V characteristic shows that
polyaniline/Cl- has very low turn-off voltage, and
fast response time, which makes it become a promising material in all-polymer FEDs.
The observation of field effect in highly doped conductive polymers is a
completely unusual phenomenon. It can be mainly explained by these FEDs coupling with electron and ion motion when gate
voltage applied. The FED degradation might be attributed to the possible
participation of atmosphere oxygen.
PUBLICATIONS
·
N.-R. Chiou, M.S. Thesis at The Ohio
State University (2002)
·
A.J. Epstein, F.-C. Hsu, N.-R. Chiou, and
V.N. Prigodin, "Doped Conducting Polymer-Based
Field Effect Devices", Synthetic Metals, ICSM (2002)
·
A.J. Epstein, F.-C. Hsu, N.-R. Chiou, and
V.N. Prigodin, "Electric-field induced
ion-leveraged metal–insulator transition in conducting polymer-based field
effect devices", Current Applied Physics 2, 339 (2002)
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