We have fabricated solution processable polymer transistors with high conductivity, requiring only a few volts for obtaining good current modulation. The devices can be fabricated and operated in air and the operation is greatly enhanced in humid atmosphere. Devices reach an On∕Off ratio of about 600 and a subthreshold swing of 500 mV per decade operating on voltages less than 2 V. In this letter the mechanism behind the current modulation is investigated, and we show that the current is modulated through ion-assisted oxidation and reduction of the semiconductor by ions moving vertically in the insulator material to the transistor channel.
- insulated gate field effect transistors
- electrical conductivity transitions
Bäcklund, T. G., Sandberg, H. G. O., Österbacka, R., & Stubb, H. (2004). Current modulation of a hygroscopic insulator organic field-effect transistor. Applied Physics Letters, 85(17), 3887 - 3889. https://doi.org/10.1063/1.1811798