Transistor Properties of 2,7-Dialkyl-Substituted Phenanthro[2,1-b:7,8-b′]dithiophene

Yoshihiro Kubozono, Keita Hyodo, Shino Hamao, Yuma Shimo, Hiroki Mori, Yasushi Nishihara

Research output: Contribution to journalArticlepeer-review

10 Citations (Scopus)


A new phenacene-type molecule with five fused aromatic rings was synthesized: 2,7-didodecylphenanthro[2,1-b:7,8-b]dithiophene ((C12H25)2-i-PDT), with two terminal thiophene rings. Field-effect transistors (FETs) using thin films of this molecule were fabricated using various gate dielectrics, showing p-channel normally-off FET properties with field-effect mobilities (μ) greater than 1 cm2 V-1 s-1. The highest μ value in the thin-film FETs fabricated in this study was 5.4 cm2V-1 s-1, when a 150 nm-thick ZrO2 gate dielectric was used. This implies that (C12H25)2-i-PDT is very suitable for use in a transistor. Its good FET performance is fully discussed, based on electronic/topological properties and theoretical calculations.

Original languageEnglish
Article number38535
JournalScientific reports
Publication statusPublished - Dec 6 2016

ASJC Scopus subject areas

  • General


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