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2,1,3-Benzothiadiazole-5,6-dicarboxylicimide-Based Polymer Semiconductors for Organic Thin-Film Transistors and Polymer Solar Cells
Jianwei Yu1,2; Joshua Loroñ a Ornelas2,3; Yumin Tang2; Mohammad Afsar Uddin4; Han Guo2; Simiao Yu1; Yulun Wang2; Han Young Woo4; Shiming Zhang1; Guichuan Xing5; Xugang Guo2; Wei Huang1,6
Source PublicationACS Applied Materials and Interfaces

A series of polymer semiconductors incorporating 2,1,3-benzothiadiazole-5,6-dicarboxylicimide (BTZI) as strong electron-withdrawing unit and an alkoxy-functionalized head-to-head linkage containing bithiophene or bithiazole as highly electron-rich co-unit are designed and synthesized. Because of the strong intramolecular charge transfer characteristics, all three polymers BTZI-TRTOR (P1), BTZI-BTOR (P2), and BTZI-BTzOR (P3) exhibit narrow bandgaps of 1.13, 1.05, and 0.92 eV, respectively, resulting in a very broad absorption ranging from 350 to 1400 nm. The highly electron-deficient 2,1,3-benzothiadiazole-5,6-dicarboxylicimide and alkoxy-functionalized bithiophene (or thiazole) lead to polymers with low-lying lowest unoccupied molecular orbitals (-3.96 to -4.28 eV) and high-lying highest occupied molecular orbitals (-5.01 to -5.20 eV). Hence, P1 and P3 show substantial and balanced ambipolar transport with electron mobilities/hole mobilities of up to 0.86/0.51 and 0.95/0.50 cm(2) V-1 s(-1), respectively, and polymer P2 containing the strongest donor unit exhibited unipolar p-type performance with an average hole mobility of 0.40 cm(2) V-1 s(-1) in top-gate/bottom-contact thin-film transistors with gold as the source and drain electrodes. When incorporated into bulk heterojunction polymer solar cells, the narrow bandgap (1.13 eV) polymer P1 shows an encouraging power conversion efficiency of 4.15% with a relatively large open-circuit voltage of 0.69 V, which corresponds to a remarkably small energy loss of 0.44 eV. The power conversion efficiency of P1 is among the highest reported to date with such a small energy loss in polymer:fullerene solar cells.

KeywordConjugated Polymer Organic Thin-film Transistors Organic Solar Cells Ambipolar Energy Loss
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Indexed BySCIE
WOS Research AreaScience & Technology - Other Topics ; Materials Science
WOS SubjectNanoscience & Nanotechnology ; Materials Science, Multidisciplinary
WOS IDWOS:000417669300058
The Source to ArticleWOS
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Cited Times [WOS]:19   [WOS Record]     [Related Records in WOS]
Document TypeJournal article
CollectionUniversity of Macau
Corresponding AuthorShiming Zhang; Guichuan Xing; Xugang Guo
Affiliation1.Key Laboratory of Flexible Electronics (KLOFE) & Institute of Advanced Materials (IAM), Jiangsu National Synergetic Innovation Center for Advanced Materials (SICAM), Nanjing Tech University (NanjingTech), 30 South Puzhu Road, Nanjing 211816, China
2.Department of Materials Science and Engineering and The Shenzhen Key Laboratory for Printed Organic Electronics, South University of Science and Technology of China, No. 1088, Xueyuan Road, Shenzhen 518055, Guangdong, China
3.Department of Chemistry and Pharmacy, Friedrich-Alexander-University Erlangen-Nü rnberg (FAU), Egerlandstr. 3, Erlangen 91058, Germany
4.Department of Chemistry, Research Institute for Natural Sciences, Korea University, Seoul 136-713, South Korea
5.Institute of Applied Physics and Materials Engineering, University of Macau, Macao 999078, China
6.Shaanxi Institute of Flexible Electronics (SIFE), Northwestern Polytechnical University (NPU), 127 West Youyi Road, Xi’an 710072, China
Recommended Citation
GB/T 7714
Jianwei Yu,Joshua Loroñ a Ornelas,Yumin Tang,et al. 2,1,3-Benzothiadiazole-5,6-dicarboxylicimide-Based Polymer Semiconductors for Organic Thin-Film Transistors and Polymer Solar Cells[J]. ACS Applied Materials and Interfaces,2017,9(48):42167-42178.
APA Jianwei Yu,Joshua Loroñ a Ornelas,Yumin Tang,Mohammad Afsar Uddin,Han Guo,Simiao Yu,Yulun Wang,Han Young Woo,Shiming Zhang,Guichuan Xing,Xugang Guo,&Wei Huang.(2017).2,1,3-Benzothiadiazole-5,6-dicarboxylicimide-Based Polymer Semiconductors for Organic Thin-Film Transistors and Polymer Solar Cells.ACS Applied Materials and Interfaces,9(48),42167-42178.
MLA Jianwei Yu,et al."2,1,3-Benzothiadiazole-5,6-dicarboxylicimide-Based Polymer Semiconductors for Organic Thin-Film Transistors and Polymer Solar Cells".ACS Applied Materials and Interfaces 9.48(2017):42167-42178.
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