Macromolecular electronic device: Field-effect transistor with a polythiophene thin film

Abstract

The first solid-state field-effect transistor has been fabricated utilizing a film of an organic macromolecule, polythiophene, as a semiconductor. The device characteristics have been optimized by controlling the doping levels of the polymer. The device is a normally off type and the source (drain) current can be modulated by a factor of 102–103 by varying the gate voltage. The carrier mobility and the transconductance have also been determined to be ∼10−5 cm2/V s and 3 nS, respectively, by means of electrical measurements.

Thermal Chemistry of Styrene on Si(100)2×1 and Modified Surfaces: Electron-Mediated Condensation Oligomerization and Posthydrogenation Reactions

“…2 Due to their unique physical and electronic properties, organic semiconductors represent a viable material for improving both the functionality and miniaturization, 3 and they promise new technological applications in the emerging nanoelectronics industry. [4][5][6][7] Many applications of organic semiconductors rely on the synthesis of fully conjugated organic polymers, or conducting polymers. 8 Molecular engineering of π-conjugated oligomers and polymers has therefore become especially important to producing well-characterized organic nanoscale structures and devices.…”

Carbon‐Based Field‐Effect Transistors for Nanoelectronics

“…[13] The performance of the early organic transistors was limited by the fact that they utilized amorphous films characterized by poor orbital overlap. Over the years, a variety of strategies have been developed to improve molecular ordering, orbital coupling, and transport efficiency in deposited organic semiconductor films.…”

“…[13][14][15][16] Because of the small bandwidth of p-stacked organic semiconductor films, charge transport is typically described by carrier hopping. For organic semiconductors with mobilities of less than about 0.01 cm 2 V À1 s À1 , the variable-range hopping (VRH) model has been developed.…”

Semiconducting Organic Molecular Materials

“…Organic π -conjugated molecules have attracted widespread interest for potential application as semiconductors since first report in 1986 [1]. These materials offer an attractive alternative because their fabrication processes are much less complex compared to conventional inorganic technology [2].…”