Ambipolar to unipolar irreversible switching in nanosheet transistors: The role of ferrocene in fullerene/ferrocene nanosheets

Dorra Mahdaoui, Chika Hirata, Kahori Nagaoka, Kun'ichi Miyazawa, Kazuko Fujii, Toshihiro Ando, Manef Abderrabba, Osamu Ito, Makito Takagi, Takayoshi Ishimoto, Masanori Tachikawa, Shinjiro Yagyu, Yubin Liu, Yoshiyuki Nakajima, Yoshihiro Nemoto, Kazuhito Tsukagoshi, Takatsugu Wakahara

Research output: Contribution to journalArticlepeer-review

2 Citations (Scopus)

Abstract

Recently, cocrystals containing organic donors and acceptors have been explored as active elements in organic field-effect transistors (FETs). Herein, we report the ambipolar charge transport properties of C60/ferrocene (C60/Fc) single cocrystal nanosheets. Upon heating to 150 °C, the ambipolar triclinic C60/Fc nanosheet FETs were converted to n-type face-centered cubic C60 nanosheet FETs due to the loss of ferrocene with void formation. This thermally induced transition of the crystal structure is accompanied by an irreversible switching of the semiconducting properties of the device from ambipolar to unipolar. We also elucidated the importance of the Fc for the charge transfer properties of the nanosheets using photoemission yield spectroscopy in air and theoretical calculations.

Original languageEnglish
Pages (from-to)3770-3774
Number of pages5
JournalJournal of Materials Chemistry C
Volume10
Issue number10
DOIs
Publication statusPublished - 2022 Feb 6
Externally publishedYes

ASJC Scopus subject areas

  • Chemistry(all)
  • Materials Chemistry

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