Investigations in the conducting polymer poly(3,4-ethylenedioxythiophene) doped with poly(4-styrenesulfonate) in an FET config

The π-conjugated backbone conducting polymer poly(3,4-ethylenedioxythiophene) (PEDOT) is chemically doped to the conducting regime (σ ~ 30 S/cm) with poly(4-styrenesulfonate) (PSS). Construction of an all polymer FET is described and the time dynamics of a simple polymer channel device using aluminum as the gating material is discussed. On/off ratios approaching 10 are achieved but with relatively slow switching speeds. The Hall effect was used in an attempt to measure the Hall mobility of the charge carriers but no discernible Hall voltage (Vh) was detected.