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 language | English |
|---|---|
| Pages (from-to) | 7983-7988 |
| Number of pages | 6 |
| Journal | Journal of Physical Chemistry C |
| Volume | 116 |
| Issue number | 14 |
| DOIs | |
| Publication status | Published - Apr 12 2012 |
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ASJC Scopus subject areas
- Physical and Theoretical Chemistry
- Electronic, Optical and Magnetic Materials
- Surfaces, Coatings and Films
- Energy(all)
Cite this
Characteristics of single crystal field-effect transistors with a new type of aromatic hydrocarbon, picene. / Kawai, Nobuyuki; Eguchi, Ritsuko; Goto, Hidenori; Akaike, Kouki; Kaji, Yumiko; Kambe, Takashi; Fujiwara, Akihiko; Kubozono, Yoshihiro.
In: Journal of Physical Chemistry C, Vol. 116, No. 14, 12.04.2012, p. 7983-7988.Research output: Contribution to journal › Article
}
TY - JOUR
T1 - Characteristics of single crystal field-effect transistors with a new type of aromatic hydrocarbon, picene
AU - Kawai, Nobuyuki
AU - Eguchi, Ritsuko
AU - Goto, Hidenori
AU - Akaike, Kouki
AU - Kaji, Yumiko
AU - Kambe, Takashi
AU - Fujiwara, Akihiko
AU - Kubozono, Yoshihiro
PY - 2012/4/12
Y1 - 2012/4/12
N2 - 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.
AB - 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.
UR - http://www.scopus.com/inward/record.url?scp=84859767958&partnerID=8YFLogxK
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U2 - 10.1021/jp300052p
DO - 10.1021/jp300052p
M3 - Article
AN - SCOPUS:84859767958
VL - 116
SP - 7983
EP - 7988
JO - Journal of Physical Chemistry C
JF - Journal of Physical Chemistry C
SN - 1932-7447
IS - 14
ER -