Thin-film organic transistors based on a polyelectrolyte chitosan complex with the addition of carbon-containing fillers

Abstract

The morphology and mobility of charge carriers in composite films no more than 500 nm thick, created on the basis of a polyelectrolyte complex of chitosan and chitosan succinamide with the addition of carbon materials, were studied using atomic force microscopy and scanning electron microscopy. Single-walled carbon nanotubes, graphene oxide and carbon-containing sorbents with different specific surfaces were used as fillers. The obtained films were used as a transport layer in the structure of field-effect transistors. The output and transfer characteristics of the transistors were measured, and based on these data it was found that the mobility of charge carriers (µ) varies from 0.341 to 1.123 cm² V−¹ s⁻ ¹ depending on the type of added carbon material