An all C60 vertical transistor for high frequency and high current density applications

Abstract

We present a vertical organic transistor with high operating frequencies and high current densities based on the organic semiconductor C 60. In this vertical organic triode (VOT), doped layers can easily be inserted to efficiently reduce the contact resistance without the need for additional structuring. Combined with annealing at elevated temperatures (150°C for 2 h), we achieve a current density of 1 A / cm2 at a driving voltage of 3 V together with an extremely high transconductance of 30 mS. The transistor retains a voltage gain above 1 up to 1.5 MHz in a simple inverter circuit. © 2012 American Institute of Physics.