Organic field-effect transistors (OFETs) have attracted great attention as key elements in Internet-of-Thing (IoT) devices due to their advantages of low cost and mass producibility made possible by printing technology. Such devices require organic semiconductors (OSCs) that intrinsically possess high carrier mobility and air stability. In addition, the demand for low-voltage operation and low power consumption has been increasing because the potential power sources for actual devices are implementable energy harvesters that supply low power and low voltages. Based on recently developed high-performance single-crystal p-type and n-type OSCs, this work demonstrated air-stable, high-mobility OFETs with low-voltage operation by using an insulating polymer-blend printing method. By comparing two acrylic polymers poly(methyl methacrylate) and poly(adamantyl methacrylate) (PADMA), having remarkably different thermal properties, we found that PADMA showing a high glass transition temperature >200 °C was suitable for device fabrication, enhancing the flexibility of OSC materials. Also, PADMA spontaneously produced good charge-transport interfaces with the OSC single crystals, leading to high carrier mobilities of 6.6 and 2.2 cm2 V−1 s−1 in p-channel and n-channel OFETs at ≤1.5 V, respectively. The current electron mobility was the highest among low voltage-operation OFETs reported so far. These high-mobility OFETs were integrated into a complementary inverter, for which a low static power consumption of 6.6 pW was confirmed. Therefore, this study reports an advantage of polymer-blend printing for OFETs with enhanced processability and performance suitable for IoT applications.
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Low-voltage complementary inverters using solution-processed, high-mobility organic single-crystal transistors fabricated by polymer-blend printing
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20 July 2020
Research Article|
July 22 2020
Low-voltage complementary inverters using solution-processed, high-mobility organic single-crystal transistors fabricated by polymer-blend printing
Taiki Sawada;
Taiki Sawada
1
Material Innovation Research Center and Department of Advanced Materials Science, Graduate School of Frontier Sciences, University of Tokyo
, 5-1-5 Kashiwanoha, Kashiwa, Chiba 277-8561, Japan
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Tatsuyuki Makita;
Tatsuyuki Makita
1
Material Innovation Research Center and Department of Advanced Materials Science, Graduate School of Frontier Sciences, University of Tokyo
, 5-1-5 Kashiwanoha, Kashiwa, Chiba 277-8561, Japan
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Akifumi Yamamura;
Akifumi Yamamura
1
Material Innovation Research Center and Department of Advanced Materials Science, Graduate School of Frontier Sciences, University of Tokyo
, 5-1-5 Kashiwanoha, Kashiwa, Chiba 277-8561, Japan
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Mari Sasaki;
Mari Sasaki
1
Material Innovation Research Center and Department of Advanced Materials Science, Graduate School of Frontier Sciences, University of Tokyo
, 5-1-5 Kashiwanoha, Kashiwa, Chiba 277-8561, Japan
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Yasunari Yoshimura;
Yasunari Yoshimura
2
Department of Materials Science and Engineering, Tokyo Institute of Technology
, 2-12-1 S8-36 Ookayama, Meguro-ku, Tokyo 152-8552, Japan
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Teruaki Hayakawa;
Teruaki Hayakawa
2
Department of Materials Science and Engineering, Tokyo Institute of Technology
, 2-12-1 S8-36 Ookayama, Meguro-ku, Tokyo 152-8552, Japan
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Toshihiro Okamoto;
Toshihiro Okamoto
1
Material Innovation Research Center and Department of Advanced Materials Science, Graduate School of Frontier Sciences, University of Tokyo
, 5-1-5 Kashiwanoha, Kashiwa, Chiba 277-8561, Japan
3
AIST-Utokyo Operando-Measurement Technology Open Innovation Laboratory (OPERANDO-OIL), National Institute of Advanced Industrial Science and Technology (AIST)
, 5-1-5 Kashiwanoha, Kashiwa, Chiba 277-8561, Japan
4
PRESTO, JST
, 4-1-8 Honcho, Kawaguchi, Saitama 332-0012, Japan
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Shun Watanabe;
Shun Watanabe
1
Material Innovation Research Center and Department of Advanced Materials Science, Graduate School of Frontier Sciences, University of Tokyo
, 5-1-5 Kashiwanoha, Kashiwa, Chiba 277-8561, Japan
3
AIST-Utokyo Operando-Measurement Technology Open Innovation Laboratory (OPERANDO-OIL), National Institute of Advanced Industrial Science and Technology (AIST)
, 5-1-5 Kashiwanoha, Kashiwa, Chiba 277-8561, Japan
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Shohei Kumagai
;
Shohei Kumagai
a)
1
Material Innovation Research Center and Department of Advanced Materials Science, Graduate School of Frontier Sciences, University of Tokyo
, 5-1-5 Kashiwanoha, Kashiwa, Chiba 277-8561, Japan
a)Author to whom correspondence should be addressed: s-kumagai@edu.k.u-tokyo.ac.jp
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Jun Takeya
Jun Takeya
b)
1
Material Innovation Research Center and Department of Advanced Materials Science, Graduate School of Frontier Sciences, University of Tokyo
, 5-1-5 Kashiwanoha, Kashiwa, Chiba 277-8561, Japan
3
AIST-Utokyo Operando-Measurement Technology Open Innovation Laboratory (OPERANDO-OIL), National Institute of Advanced Industrial Science and Technology (AIST)
, 5-1-5 Kashiwanoha, Kashiwa, Chiba 277-8561, Japan
5
International Center for Materials Nanoarchitectonics (WPI-MANA), National Institute for Materials Science (NIMS)
, 1-1 Namiki, Tsukuba, Ibaraki 205-0044, Japan
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a)Author to whom correspondence should be addressed: s-kumagai@edu.k.u-tokyo.ac.jp
b)
E-mail: takeya@k.u-tokyo.ac.jp
Appl. Phys. Lett. 117, 033301 (2020)
Article history
Received:
March 04 2020
Accepted:
July 06 2020
Citation
Taiki Sawada, Tatsuyuki Makita, Akifumi Yamamura, Mari Sasaki, Yasunari Yoshimura, Teruaki Hayakawa, Toshihiro Okamoto, Shun Watanabe, Shohei Kumagai, Jun Takeya; Low-voltage complementary inverters using solution-processed, high-mobility organic single-crystal transistors fabricated by polymer-blend printing. Appl. Phys. Lett. 20 July 2020; 117 (3): 033301. https://doi.org/10.1063/5.0006651
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