Regensburg 2007 – scientific programme

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SYOE: Symposium Organic Thin Film Electronics: From Molecular Contacts to Devices

SYOE 8: Poster Session SYOE

SYOE 8.80: Poster

Tuesday, March 27, 2007, 18:00–20:00, Poster B

Determination of charge carrier mobility in poly(3-hexylthiophene) with different current transient measurement techniques — •Andreas Baumann, Carsten Deibel, and Vladimir Dyakonov — Experimental Physics VI, Physical Institute, Julius-Maximilians University of Würzburg, Am Hubland, D-97074 Würzburg, Germany

The carrier mobility in organic disordered materials, such as conjugated polymers, plays an important role in understanding the behaviour of organic electronic devices. We investigated the mobility of charge carriers in poly(3-hexylthiophene) (P3HT) using different current transient measurement methods. Besides the conventional transient photoconductivity experiment, time-of-flight (TOF), we used extraction current transient techniques, such as charge carrier extraction by linearly increasing voltage (CELIV), probing equilibrium carriers instead. The field and temperature dependence of the mobility will be discussed in view of hopping transport in a Gaussian density of states distribution.