TY - JOUR
T1 - Ambipolar to unipolar irreversible switching in nanosheet transistors
T2 - The role of ferrocene in fullerene/ferrocene nanosheets
AU - Mahdaoui, Dorra
AU - Hirata, Chika
AU - Nagaoka, Kahori
AU - Miyazawa, Kun'ichi
AU - Fujii, Kazuko
AU - Ando, Toshihiro
AU - Abderrabba, Manef
AU - Ito, Osamu
AU - Takagi, Makito
AU - Ishimoto, Takayoshi
AU - Tachikawa, Masanori
AU - Yagyu, Shinjiro
AU - Liu, Yubin
AU - Nakajima, Yoshiyuki
AU - Nemoto, Yoshihiro
AU - Tsukagoshi, Kazuhito
AU - Wakahara, Takatsugu
N1 - Funding Information:
Part of this research was financially supported by a Grant-in-Aid for Scientific Research (No. JP15K05615) from the Ministry of Education, Culture, Sports, Science, and Technology, Japan. The computations were partly performed using ITO computer system in Kyushu Univ. through the HPCI System Research Project (Project ID: hp200075).
Publisher Copyright:
© 2022 Royal Society of Chemistry. All rights reserved.
PY - 2022/2/6
Y1 - 2022/2/6
N2 - 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.
AB - 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.
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U2 - 10.1039/d1tc05545c
DO - 10.1039/d1tc05545c
M3 - Article
AN - SCOPUS:85127466398
VL - 10
SP - 3770
EP - 3774
JO - Journal of Materials Chemistry C
JF - Journal of Materials Chemistry C
SN - 2050-7526
IS - 10
ER -