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Bulk Electron Transport and Charge Injection in a High Mobility n-Type Semiconducting Polymer



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Bulk electron transport in a high mobility n-type polymer is studied by time-of-flight photocurrent measurements and electron-only devices. Bulk electron mobilities of ∼ 5×10−3 cm2/Vs are obtained. The analysis of the electron currents suggests the presence of an injection barrier for all conventionally used low workfunction cathodes.