Characteristics of single crystal field-effect transistors with a new type of aromatic hydrocarbon, picene

Nobuyuki Kawai, Ritsuko Eguchi, Hidenori Goto, Kouki Akaike, Yumiko Kaji, Takashi Kambe, Akihiko Fujiwara, Yoshihiro Kubozono

Research output: Contribution to journalArticle

32 Citations (Scopus)

Abstract

Picene is a phenacene-type aromatic hydrocarbon molecule with five benzene rings. We have fabricated picene single crystal (SC) field-effect transistors (FETs) with solid gate and ionic liquid gate dielectrics. Although the picene SC FET showed a large hole-injection barrier without any modification of interface between source/drain electrodes and picene SC, such a large hole-injection barrier could be effectively reduced by modifying the interface with tetracyanoquinodimethane (TCNQ). Picene SC FET with an HfO 2 gate dielectric and TCNQ-coated electrodes shows p-channel characteristics with a smooth hole injection and a field-effect mobility more than 1 cm 2 V -1 s -1 in two-terminal measurement. Picene SC FET could be operated even in bottom-contact structure by modifying the interface with octanethiol. Furthermore, picene SC FET operated with ionic liquid gate dielectric, [1-butyl-3-methylimidazolium][hexafluorophosphate], showing the field-effect mobility of 1.8 × 10 -1 cm 2 V -1 s -1 and low absolute value, 1.9 V, of threshold voltage.

Original languageEnglish
Pages (from-to)7983-7988
Number of pages6
JournalJournal of Physical Chemistry C
Volume116
Issue number14
DOIs
Publication statusPublished - Apr 12 2012

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Energy(all)
  • Physical and Theoretical Chemistry
  • Surfaces, Coatings and Films

Fingerprint Dive into the research topics of 'Characteristics of single crystal field-effect transistors with a new type of aromatic hydrocarbon, picene'. Together they form a unique fingerprint.

  • Cite this