Organic Field-Effect Transistors

TLDR

Organic field‑effect transistors, first described in 1987, have seen dramatic performance improvements over the past few years, accompanied by the development of multiple models to explain their operation. This review evaluates OFET performance by analyzing recent data on field‑effect mobility and on‑off current ratios. The authors compare active materials and fabrication methods, and analyze charge‑transport mechanisms and resulting OFET models.

Abstract

Organic field-effect transistors (OFETs) were first described in 1987. Their characteristics have undergone spectacular improvements during the last two or three years. At the same time, several models have been developed to rationalize their operating mode. In this review, we examine the performance of OFETs as revealed by recently published data, mainly in terms of field-effect mobility and on–off current ratio. We compare the various compounds that have been used as the active component, and describe the most prominent fabrication techniques. Finally, we analyze the charge transport mechanisms in organic solids, and the resulting models of OFETs.