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Ambipolar Charge Transport in p-Type Cyclopentadithiophene-Based Polymer Semiconductors Enabled by D-A-A-D Configuration
- Title
- Ambipolar Charge Transport in p-Type Cyclopentadithiophene-Based Polymer Semiconductors Enabled by D-A-A-D Configuration
- Authors
- Yoo; Hyeonjin; Sung; Mingi; Ahn; Hyungju; Yang; Dohyun; Jin Soo; Lee; Junghoon; Byoung Hoon
- Ewha Authors
- 이병훈
- SCOPUS Author ID
- 이병훈
- Issue Date
- 2023
- Journal Title
- Chemistry of Materials
- ISSN
- 0897-4756
- Citation
- Chemistry of Materials vol. 35, no. 22, pp. 9562 - 9571
- Publisher
- American Chemical Society
- Indexed
- SCIE; SCOPUS
- Document Type
- Article
- Abstract
- Polymer semiconductors with hysteresis-free ambipolar charge transport characteristics are key elements for developing high-performance organic field-effect transistors and circuits. In this study, a new and facile strategy of simply reconfiguring the donor (D) and acceptor (A) moieties in the order D-A-A-D in the repeat units was proposed to prepare D-A-type polymer semiconductors with enhanced electron and hole mobilities and hysteresis-free transistor characteristics. In contrast to the conventional D-A-type polymer semiconductor based on cyclopentadithiophene (CDT) and pyridyl-2,1,3-thiadiazole (PT) (hereafter, PCDTPT), the newly developed polymer with CDT-PT-PT-CDT configuration (hereafter, PCPPC) exhibited hysteresis-free transistor characteristics and enhanced electron and hole mobilities of 0.41 and 1.50 cm2 V-1 s-1, respectively. Such improvements were attributed to the deepened conduction band edge of PCPPC compared with that of its D-A-type counterpart, PCDTPT. Owing to the improved ambipolar charge-transport characteristics, the organic complementary metal-oxide semiconductor inverters fabricated with the PCPPC charge transporting layers exhibited a remarkably high gain of greater than 165. Our results provided a simple but effective strategy for designing high-performance ambipolar polymer semiconductors. © 2023 American Chemical Society.
- DOI
- 10.1021/acs.chemmater.3c01570
- Appears in Collections:
- 공과대학 > 화공신소재공학과 > Journal papers
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