Tunable organic transistors that use microfluidic source and drain electrodes

Details Tunable organic transistors that use microfluidic source and drain electrodes Tunable organic transistors that use microfluidic source and drain electrodes

Sep 2003

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2003apphl..83.2067m&link_type=abstract

Applied Physics Letters, Volume 83, Issue 10, id. 2067 (2003).

Physics

6

Molecular Electronic Devices, Micro- And Nano-Electromechanical Systems And Devices, Micromechanical Devices And Systems, Field Effect Devices, Fluidics, Contact Resistance, Contact Potential

Scientific paper

This letter describes a type of transistor that uses conducting fluidic source and drain electrodes of mercury which flow on top of a thin film of the organic semiconductor pentacene. Pumping the mercury through suitably designed microchannels changes the width of the transistor channel and, therefore, the electrical characteristics of the device. Measurements on transistors with a range of channel lengths reveal low contact resistances between mercury and pentacene. Data collected before, during, and after pumping the mercury through the microchannels demonstrate reversible and systematic tuning of the devices. This unusual type of organic transistor has the potential to be useful in plastic microfluidic devices that require active elements for pumps, sensors, or other components. It also represents a noninvasive way to build transistor test structures that incorporate certain classes of chemically and mechanically fragile organic semiconductors.

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