Charge Carrier Polarity Modulation in Diketopyrrolopyrrole-Based Low Band Gap Semiconductors by Terminal Functionalization
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- Samrat Ghosh
- Photosciences and Photonics Section, Chemical Sciences and Technology Division, CSIR−National Institute for Interdisciplinary Science and Technology (CSIR−NIIST), Thiruvananthapuram 695019, India
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- Reshma Raveendran
- School of Physics, Indian Institute of Science Education and Research-Thiruvananthapuram (IISER-TVM), Thiruvananthapuram 695551, India
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- Akinori Saeki
- Department of Applied Chemistry, Graduate School of Engineering, Osaka University, 2-1 Yamadaoka, Suita, Osaka 565-0871, Japan
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- Shu Seki
- Department of Molecular Engineering, Graduate School of Engineering, Kyoto University, Nishikyo-ku, Kyoto 615-8510, Japan
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- Manoj Namboothiry
- School of Physics, Indian Institute of Science Education and Research-Thiruvananthapuram (IISER-TVM), Thiruvananthapuram 695551, India
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- Ayyappanpillai Ajayaghosh
- Photosciences and Photonics Section, Chemical Sciences and Technology Division, CSIR−National Institute for Interdisciplinary Science and Technology (CSIR−NIIST), Thiruvananthapuram 695019, India
書誌事項
- 公開日
- 2018-12-13
- 資源種別
- journal article
- DOI
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- 10.1021/acsami.8b16714
- 公開者
- American Chemical Society (ACS)
この論文をさがす
説明
Organic semiconductors with variable charge carrier polarity are required for optoelectronic applications. Herein, we report the synthesis of three novel diketopyrrolopyrrole (DPP)-based D-A molecules having three different terminal groups (amide, ester, and dicyano) and study their electronic properties. An increase in electron acceptor strength from amide to dicyano leads to a bathochromic shift in absorption. Photoconductivity and field effect transistor (FET) measurements confirmed that a small increase in acceptor strength can result in a large change in the charge transport properties from p-type to n-type. The molecule with an amide group, DPP-amide, exhibited a moderate p-type mobility (1.3 × 10
収録刊行物
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- ACS Applied Materials & Interfaces
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ACS Applied Materials & Interfaces 11 (1), 1088-1095, 2018-12-13
American Chemical Society (ACS)
