Unusually high-performing organic field-effect transistors based on π-extended semiconducting porphyrins

Abstract

Highly conjugated porphyrin derivatives, H2TP and ZnTP, are synthesized. J-aggregations of the H-aggregated dimeric porphyrin pairs are clearly observed by their single crystal structures that facilitate slip-stacked charge transport phenomenon. In particular, their SC-FETs show the highest field-effect mobilities of 0.85-2.90 cm2 V-1s -1. Furthermore, the ZnTP-based OPT displays a dramatic photoinduced current enhancement with a high photoresponsivity of 22 000 A W-1 under a very low light intensity (5.6 m W cm-2). Copyright © 2012 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim.