Abstract
Thin film transistors (TFTs) with ionic liquid gate dielectrics, [1-ethyl-3-methylimidazolium][bis(trifluoromethanesulfonyl)imide] (emim[TFSI]) and [1-butyl-3-methylimidazolium][hexafluorophosphate] (bmim[PF6]), are fabricated with thin films of one dimensional (1D) hydrocarbon, [7]phenacene. P-channel characteristics are observed for [7]phenacene TFTs with both ionic liquids by use of platinum electrode. The field-effect mobility μ for [7]phenacene TFT with bmim[PF6] was recorded to be 0.28 cm 2 V-1 s-1. The value of absolute threshold voltage, |VTH|, was less than 2.5 V, showing low-voltage operation. The accumulation of hole in the [7]phenacene TFTs with ionic liquids was confirmed from the voltage or time dependence of capacitance in metal-insulator-semiconductor structure, which shows that these TFTs operate electrochemically and the carriers are accumulated in the whole of [7]phenacene thin films.
| Original language | English |
|---|---|
| Pages (from-to) | 2076-2083 |
| Number of pages | 8 |
| Journal | Organic Electronics: physics, materials, applications |
| Volume | 12 |
| Issue number | 12 |
| DOIs | |
| Publication status | Published - Dec 2011 |
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Keywords
- Aromatic hydrocarbon
- Electric double layer
- Electrochemical transistor
- Ionic liquid
- Low voltage operation
- Organic FET
ASJC Scopus subject areas
- Biomaterials
- Electronic, Optical and Magnetic Materials
- Materials Chemistry
- Electrical and Electronic Engineering
- Chemistry(all)
- Condensed Matter Physics
Cite this
Characteristics of conjugated hydrocarbon based thin film transistor with ionic liquid gate dielectric. / Kaji, Yumiko; Ogawa, Keiko; Eguchi, Ritsuko; Goto, Hidenori; Sugawara, Yasuyuki; Kambe, Takashi; Akaike, Koki; Gohda, Shin; Fujiwara, Akihiko; Kubozono, Yoshihiro.
In: Organic Electronics: physics, materials, applications, Vol. 12, No. 12, 12.2011, p. 2076-2083.Research output: Contribution to journal › Article
}
TY - JOUR
T1 - Characteristics of conjugated hydrocarbon based thin film transistor with ionic liquid gate dielectric
AU - Kaji, Yumiko
AU - Ogawa, Keiko
AU - Eguchi, Ritsuko
AU - Goto, Hidenori
AU - Sugawara, Yasuyuki
AU - Kambe, Takashi
AU - Akaike, Koki
AU - Gohda, Shin
AU - Fujiwara, Akihiko
AU - Kubozono, Yoshihiro
PY - 2011/12
Y1 - 2011/12
N2 - Thin film transistors (TFTs) with ionic liquid gate dielectrics, [1-ethyl-3-methylimidazolium][bis(trifluoromethanesulfonyl)imide] (emim[TFSI]) and [1-butyl-3-methylimidazolium][hexafluorophosphate] (bmim[PF6]), are fabricated with thin films of one dimensional (1D) hydrocarbon, [7]phenacene. P-channel characteristics are observed for [7]phenacene TFTs with both ionic liquids by use of platinum electrode. The field-effect mobility μ for [7]phenacene TFT with bmim[PF6] was recorded to be 0.28 cm 2 V-1 s-1. The value of absolute threshold voltage, |VTH|, was less than 2.5 V, showing low-voltage operation. The accumulation of hole in the [7]phenacene TFTs with ionic liquids was confirmed from the voltage or time dependence of capacitance in metal-insulator-semiconductor structure, which shows that these TFTs operate electrochemically and the carriers are accumulated in the whole of [7]phenacene thin films.
AB - Thin film transistors (TFTs) with ionic liquid gate dielectrics, [1-ethyl-3-methylimidazolium][bis(trifluoromethanesulfonyl)imide] (emim[TFSI]) and [1-butyl-3-methylimidazolium][hexafluorophosphate] (bmim[PF6]), are fabricated with thin films of one dimensional (1D) hydrocarbon, [7]phenacene. P-channel characteristics are observed for [7]phenacene TFTs with both ionic liquids by use of platinum electrode. The field-effect mobility μ for [7]phenacene TFT with bmim[PF6] was recorded to be 0.28 cm 2 V-1 s-1. The value of absolute threshold voltage, |VTH|, was less than 2.5 V, showing low-voltage operation. The accumulation of hole in the [7]phenacene TFTs with ionic liquids was confirmed from the voltage or time dependence of capacitance in metal-insulator-semiconductor structure, which shows that these TFTs operate electrochemically and the carriers are accumulated in the whole of [7]phenacene thin films.
KW - Aromatic hydrocarbon
KW - Electric double layer
KW - Electrochemical transistor
KW - Ionic liquid
KW - Low voltage operation
KW - Organic FET
UR - http://www.scopus.com/inward/record.url?scp=80053443858&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=80053443858&partnerID=8YFLogxK
U2 - 10.1016/j.orgel.2011.08.016
DO - 10.1016/j.orgel.2011.08.016
M3 - Article
AN - SCOPUS:80053443858
VL - 12
SP - 2076
EP - 2083
JO - Organic Electronics
JF - Organic Electronics
SN - 1566-1199
IS - 12
ER -