Synthesis of the extended phenacene molecules, [10]phenacene and [11]phenacene, and their performance in a field-effect transistor.

ABSTRACT: The [10]phenacene and [11]phenacene molecules have been synthesized using a simple repetition of Wittig reactions followed by photocyclization. Sufficient amounts of [10]phenacene and [11]phenacene were obtained, and thin-film FETs using these molecules have been fabricated with SiO₂ and ionic liquid gate dielectrics. These FETs operated in p-channel. The averaged measurements of field-effect mobility, , were 3.1(7)?×?10^-2 and 1.11(4)?×?10^-1?cm² V^-1 s^-1, respectively, for [10]phenacene and [11]phenacene thin-film FETs with SiO₂ gate dielectrics. Furthermore, [10]phenacene and [11]phenacene thin-film electric-double-layer (EDL) FETs with ionic liquid showed low-voltage p-channel FET properties, with values of 3(1) and 1(1)?cm² V^-1 s^-1, respectively. This study also discusses the future utility of the extremely extended ?-network molecules [10]phenacene and [11]phenacene as the active layer of FET devices, based on the experimental results obtained.

SUBMITTER: Okamoto H 

PROVIDER: S-EPMC6408568 | biostudies-literature | 2019 Mar

REPOSITORIES: biostudies-literature