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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