Organic Inverter Using Monolithically Stacked Static Induction Transistors

We fabricated monolithic organic inverters using a stacked structure of two organic static induction transistors (SITs). The operating characteristics of a p-channel transistor load and p-channel transistor drive-type inverter in which pentacene films are employed as an organic semiconductor material are described. The gain transfer characteristics of a pentacene SIT inverter based on an enhancement-load/enhancement-drive layout showed a threshold voltage of approximately -1 V and a relatively large voltage gain of approximately 1.5. The advantages of this novel device structure are the controllability of the operational characteristics of each SIT and the simple device fabrication process.