High-performance organic semiconductors for thin-film transistors based on 2,7-divinyl[l]benzothieno[3,2-b]benzothiophene

摘要

We have synthesized two novel organic semiconductors,which have a symmetrically substituted 2,7-divinyl[l]benzothieno[3,2-b]benzothiophene backbone.They show good electrical performances on a SiO2/Si substrate,with high field-effect mobilities of up to 0.4 cm~2 V~(-1)s~(-1),and can easily be synthesized in large quantities.In addition,there is no significant change in the mobility of DPV-BTBT even after the device is exposed to air for at least 60 days(further monitoring is in progress),showing that it is a promising air-stable p-channel organic semiconductor that can be applied to all-organic flexible electronic devices.