Synthesis and Application for Organic Electronic Devices of Silane-Terminated Donor and Acceptor Type Self-Assembled Molecules

摘要

Recently, organic field-effect transistors (OFETs) using organic semiconductor materials have attracted significant attention owing to their various advantages such as lightweight, flexibility and impact resistance. Previously, our group reported that the channel carrier density in an organic semiconducting layer can be tuned by the polar self-assembled monolayers (SAMs) with different dipole moment on the SiO2 insulator, and thereby that the threshold voltage of the OFETs can be controlled. 1 In this work, as the next stage of the study, we attempt to control the threshold voltage of the OFET devices originating from tuning the channel carrier density based on the charge transfer from the donor/acceptor-type SAMs to the n-/p-type organic semiconducting layer.