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We have recently fabricated new nano/mesowires of perylene tetracarboxylic diimide (PTCDI) without side chains by self-assembling them from a gas phase. In this letter, we discuss a single PTCDI mesowire transistor that was successfully fabricated, characterized, and modeled. This organic n-channel field effect transistor shows good output and transfer characteristics. Our transistor model includes the Poole-Frenkel electric field dependence of charge carrier mobility in organic materials and fits all experimental output characteristics of the transistor. The zero-field charge carrier mobility of the PTCDI mesowire is found to be 0.72 cm2/(V·s). The experimental results are promising for the further development of single nanowire transistors and advancement of organic nanoelectronics.
Date of Publication: May 2012