A liquid-crystalline semiconducting polymer based on thienylene–vinylene–thienylene: Enhanced hole mobilities by mesomorphic molecular ordering and thermoplastic shape-deformable characteristics

Tatsuya Mori, Hideaki Komiyama, Takahiro Ichikawa, Takuma Yasuda

研究成果: ジャーナルへの寄稿記事

抄録

Liquid-crystalline (LC) π-conjugated polymers are an emerging class of semiconducting materials owing to their promising performance in organic field-effect transistors (OFETs). Little is known, however, about the relationship between LC nature and charge carrier mobility. In this paper, we focus on a thiophene-based p-type semiconducting polymer, PC12TV12T, containing thienylene–vinylene–thienylene (TVT) units, and report a systematic investigation of its thermotropic LC properties, self-organized structures in bulk and thin films, as well as charge transport properties in OFETs. We found that thermal annealing at LC temperatures (99–170 °C) strongly enhanced OFET performance, leading to field-effect hole mobilities as high as 0.37 cm2 V−1 s−1, comparable to that of amorphous silicon. By virtue of its thermoplasticity, the TVT-based polymer can also be processed into fine semiconducting microfibers, which can even function as a p-type active channel for charge transport. This bottom-up technology utilizing the LC nature enables cost-effective and energy-efficient manufacture of optoelectronic devices.

元の言語英語
ジャーナルPolymer Journal
DOI
出版物ステータス受理済み/印刷中 - 1 1 2019

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Semiconducting polymers
Hole mobility
Liquid crystal polymers
Organic field effect transistors
Thermoplastics
Crystalline materials
Liquids
Charge transfer
Thiophenes
Carrier mobility
Conjugated polymers
Thiophene
Charge carriers
Amorphous silicon
Optoelectronic devices
Transport properties
Polymers
Annealing
Thin films
Costs

All Science Journal Classification (ASJC) codes

  • Polymers and Plastics
  • Materials Chemistry

これを引用

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title = "A liquid-crystalline semiconducting polymer based on thienylene–vinylene–thienylene: Enhanced hole mobilities by mesomorphic molecular ordering and thermoplastic shape-deformable characteristics",
abstract = "Liquid-crystalline (LC) π-conjugated polymers are an emerging class of semiconducting materials owing to their promising performance in organic field-effect transistors (OFETs). Little is known, however, about the relationship between LC nature and charge carrier mobility. In this paper, we focus on a thiophene-based p-type semiconducting polymer, PC12TV12T, containing thienylene–vinylene–thienylene (TVT) units, and report a systematic investigation of its thermotropic LC properties, self-organized structures in bulk and thin films, as well as charge transport properties in OFETs. We found that thermal annealing at LC temperatures (99–170 °C) strongly enhanced OFET performance, leading to field-effect hole mobilities as high as 0.37 cm2 V−1 s−1, comparable to that of amorphous silicon. By virtue of its thermoplasticity, the TVT-based polymer can also be processed into fine semiconducting microfibers, which can even function as a p-type active channel for charge transport. This bottom-up technology utilizing the LC nature enables cost-effective and energy-efficient manufacture of optoelectronic devices.",
author = "Tatsuya Mori and Hideaki Komiyama and Takahiro Ichikawa and Takuma Yasuda",
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AU - Yasuda, Takuma

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AB - Liquid-crystalline (LC) π-conjugated polymers are an emerging class of semiconducting materials owing to their promising performance in organic field-effect transistors (OFETs). Little is known, however, about the relationship between LC nature and charge carrier mobility. In this paper, we focus on a thiophene-based p-type semiconducting polymer, PC12TV12T, containing thienylene–vinylene–thienylene (TVT) units, and report a systematic investigation of its thermotropic LC properties, self-organized structures in bulk and thin films, as well as charge transport properties in OFETs. We found that thermal annealing at LC temperatures (99–170 °C) strongly enhanced OFET performance, leading to field-effect hole mobilities as high as 0.37 cm2 V−1 s−1, comparable to that of amorphous silicon. By virtue of its thermoplasticity, the TVT-based polymer can also be processed into fine semiconducting microfibers, which can even function as a p-type active channel for charge transport. This bottom-up technology utilizing the LC nature enables cost-effective and energy-efficient manufacture of optoelectronic devices.

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