Organic ambipolar transistors and circuits

Abstract

Ambipolar charge transport of a variety of small molecules and polymers has initiated research on ambipolar transistors and circuits. Such electronic devices can be fabricated at low temperatures on rigid or flexible large area substrates. The realization of ambipolar logic circuits is simple in comparison to the fabrication of logic circuits in complementary metal-oxide-semiconductor (CMOS) technology. Fewer layers have to be deposited and less patterning steps are required to implement simple digital circuits. In the following chapter, the basic operation principles of ambipolar transistors and circuits will be introduced. Moreover, an overview of the current ambipolar transistor technology based on different materials will be discussed, and their advantages and disadvantages compared to unipolar devices will be described.