Condensed Matter Physics Seminar

2 p.m., Thursday, January 26, 2006
Room 1201, Physics Building

Dipolar Field Effects in Organic Semiconductor Devices: Transistor Tunability and Chemical Sensitivity

Howard E. Katz

(Johns Hopkins University)

Abstract: The anticipated advantages of organic field-effect transistors (OFETs) are low-cost processing and functionality not easily obtained from silicon devices. Currents through these devices are influenced by local fields at the semiconductor interfaces as well as voltages applied from gate electrodes. Local field effects can be utilized to radically tune the input-output relationships in OFETs and to transmit information about chemical vapor adsorbance to a circuit. This seminar will cover organic semiconductor design, recent trends and discoveries in the organic electronics field, and our latest results on the creation, stability, and utilization of internal fields to enable new architectures and applications. Highlights include enhanced sensitivity to nerve gas simulants and carrier type inversion in an organic FET.

Host: Fuhrer
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