AbstractN,N′-diphenylbutyl-3,4,9,10-perylenebiscarboximide (PTCDI-C4Ph) were characterized by optical and electrochemical methods. A device with an ITO/PTCDI-C4Ph (≈2μm)/Al structure was fabricated to measure mobility by time-of-flight techniques. This vacuum deposited organic layer was an amorphous state. Electrons were observed faster than holes. The electron and hole mobilities were 1.8×10−4cm2/Vs and 1.1×10−4cm2/Vs under the electric field of 500(V/cm)1/2, respectively. This result shows that this organic compound is a good candidate for an n-type conduction.
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