Article ID Journal Published Year Pages File Type
1265586 Organic Electronics 2008 5 Pages PDF
Abstract

We coated gold electrodes with poly(3,4-ethylenedioxythiophene):poly(styrenesulfonate) (PEDOT:PSS) in order to reduce the contact resistance in pentacene organic field-effect transistors (OFETs). The crystallinity of the pentacene layers on the gold electrodes was found to increase upon coating the substrates with PEDOT:PSS, whereas the hole-injection barrier between the organic semiconductor and the metal electrode decreased from 0.85 to 0.14 eV. The increased crystallinity and reduced hole-injection barrier resulted in a significant reduction of the contact resistance in the pentacene OFETs, thus leading to an improvement of the field-effect mobility of the devices (from 0.031 to 0.218 cm2/Vs).

Related Topics
Physical Sciences and Engineering Chemistry Chemistry (General)
Authors
, , , , , ,