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Bio Organic-Based Gate Dielectric Materials for Thin Film Transistors

Published online by Cambridge University Press:  24 May 2012

James G. Grote ,
Fahima Ouchen ,
Donna M. Joyce ,
Kristi M. Singh ,
Narayanan Venkat ,
Steven R. Smith ,
Perry P. Yaney ,
Emily M. Heckman ,
Carrie M. Bartsch  and
Rajesh R. Naik
James G. Grote
Affiliation:
US Air Force Research Laboratories, Wright-Patterson Air force Base, OH 45433
Fahima Ouchen
Affiliation:
US Air Force Research Laboratories, Wright-Patterson Air force Base, OH 45433 University of Dayton Research Institute, Dayton, OH 45469
Donna M. Joyce
Affiliation:
US Air Force Research Laboratories, Wright-Patterson Air force Base, OH 45433
Kristi M. Singh
Affiliation:
US Air Force Research Laboratories, Wright-Patterson Air force Base, OH 45433 UES Inc., Dayton, OH 45432
Narayanan Venkat
Affiliation:
US Air Force Research Laboratories, Wright-Patterson Air force Base, OH 45433 University of Dayton Research Institute, Dayton, OH 45469
Steven R. Smith
Affiliation:
US Air Force Research Laboratories, Wright-Patterson Air force Base, OH 45433 University of Dayton Research Institute, Dayton, OH 45469
Perry P. Yaney
Affiliation:
US Air Force Research Laboratories, Wright-Patterson Air force Base, OH 45433 Department of Physics and Electro-Optics Program, University of Dayton, OH 45469
Emily M. Heckman
Affiliation:
US Air Force Research Laboratories, Wright-Patterson Air force Base, OH 45433
Carrie M. Bartsch
Affiliation:
US Air Force Research Laboratories, Wright-Patterson Air force Base, OH 45433
Rajesh R. Naik
Affiliation:
US Air Force Research Laboratories, Wright-Patterson Air force Base, OH 45433
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Abstract

The potential of bio-dielectrics for thin film transistor applications was explored via the incorporation of titanium dioxide (TiO2) nanoparticles, rutile form, a high dielectric constant (ε) ceramic, in the deoxyribonucleic acid (DNA) bio-polymer. The DNA-ceramic hybrid films were fabricated from stable suspensions of the TiO2 nanoparticles in viscous, aqueous DNA solutions. Dielectric characterization revealed that the incorporation of TiO2 in DNA resulted in enhanced dielectric constant (14.3 at 1 kHz for 40 wt % TiO2) relative to that of DNA in the entire frequency range of 1 kHz-1 MHz. Variable temperature dielectric measurements, in the 20-80°C range, of the DNA-TiO2 films revealed that the ceramic additive stabilizes DNA against large temperature dependent variations in both ε and the dielectric loss factor tan δ. The bulk resistivity of the DNA-TiO2 hybrid films was measured to be two to three orders of magnitude higher than that of the control DNA films, indicating their potential for utilization as insulating dielectrics in transistor and capacitor applications.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 1467: Symposium UU – Integration of Natural and Synthetic Biomaterials with Organic Electronics , 2012 , mrss12-1467-uu03-01
Copyright
Copyright © Materials Research Society 2012

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References

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