Organic transistor using self-assembled monolayer

A complementary thin film transistor (C-TFT) comprising:

• a substrate;
• two gate electrodes arranged on or above the substrate;
• an insulating layer covering the gate electrodes;
• source/drain electrodes arranged so that the two gate electrodes are each positioned between a source electrode and a drain electrode through the intermediary of the insulating layer and that source/drain electrodes positioned between the two gate electrodes constitute one electrode;
• an organic thin-film semiconductor arranged between the source/drain electrodes;
• wherein the organic thin-film semiconductor is so configured as to be used as a p-type semiconductor,
• wherein a first self-assembled monolayer is arranged in an n-channel field-effect transistor (FET) region between the semiconductor and the source electrode and between the semiconductor and the drain electrode,
• wherein the first self-assembled monolayer is composed of a molecule corresponding to an alkylthiol, except with sodium replacing terminal hydrogen at an opposite end to sulfur, represented by SH—(CH2)2Na, wherein “n” is an integer of 1 or more,
• wherein a second self-assembled monolayer is arranged in a p-channel field-effect transistor (FET) region between the thin-film semiconductor and the source electrode and between the thin-film semiconductor and the drain electrode, and
• wherein the second self-assembled monolayer is composed of a perfluoroalkylthiol represented by SH—(CF2)nF, wherein “n” is an integer of 1 or more.

An n-channel field-effect transistor comprising:

• a substrate;
• a gate electrode arranged on or above the substrate;
• an insulating layer covering the gate electrode;
• source/drain electrodes arranged on both sides of the gate electrode through the intermediary of the insulating layer;
• and
• an organic thin-film semiconductor arranged between the source/drain electrodes,
• wherein a self-assembled monolayer is arranged between the thin-film semiconductor and the source electrode and between the thin-film semiconductor and the drain electrode, and
• wherein the self-assembled monolayer is composed of a molecule corresponding to an alkylthiol, except with sodium replacing terminal hydrogen at an opposite end to sulfur, represented by SH—(CH2)nNa, wherein “n” is an integer of 1 or more.