Wanekaya, Adam K. and Bangar, Mangesh A. and Yun, Minhee and Chen, Wilfred and Myung, Nosang V. and Mulchandani, Ashok (2007) Field-effect transistors based on single nanowires of conducting polymers. JOURNAL OF PHYSICAL CHEMISTRY C, 111 (13). pp. 5218-5221.
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Official URL: http://pubs.acs.org/doi/abs/10.1021/jp067213g
Field-effect transistors based on single nanowires of conducting polymers (i.e., polyaniline and polypyrrole) were fabricated and characterized. The 100-nm-wide and 2.5-mu m-long conducting polymer nanowire field-effect transistors were turned ``on'' and ``off'' by electrical or chemical signals. A large modulation in the electrical conductivity of up to 3 orders of magnitude was demonstrated as a result of varying the electrochemical gate potential of these nanowires. Single nanowire conducting polymer field-effect transistors show higher electrical performance than field-effect transistors based on conducting polymer nanowire electrode junctions and thin films in terms of their transconductance (g(m)) and on/off current (I-on/I-off) ratio. Furthermore, the performance of single nanowires conducting polymer field-effect transistors was found to be comparable to the silicon nanowire field-effect transistors. These results imply that it is possible to tune the sensitivities of these conducting polymer nanowires by simple control of the electrolyte/liquid ion gate potentials. On the basis of these findings, we demonstrated the ability to tailor the sensitivities of sensors based on single conducting polymer nanowires.
|Subjects:||Analytical Science > Nanotechnology for sensing and actuating|
Physical Science > Nanoelectronics
Engineering > Nanotechnology applications in ICT
|Deposited By:||Farnush Anwar|
|Deposited On:||07 Jan 2009 11:10|
|Last Modified:||07 Jan 2009 11:10|
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