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Conductivity measurements of organic materials using field-effect transistors (FETs) and space-charge-limited current (SCLC) technique

O.D. Jurchescu,     Wake Forest University, USA

Abstract:

This chapter describes in detail two major techniques used to estimate the charge carrier mobility in organic semiconductors: field-effect transistors (FET) and space-charge-limited current (SCLC) measurements. While the calculations using FET structures provide details about material properties at the interface with gate dielectrics, the bulk-mobility can be extracted from SCLC data. The values of mobility obtained from the two methods are often very different due to anisotropy arising from molecular packing along various crystallographic directions, ...

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