https://scholars.lib.ntu.edu.tw/handle/123456789/415823
標題: | S,N-Heteroacene-Based Copolymers for Highly Efficient Organic Field Effect Transistors and Organic Solar Cells: Critical Impact of Aromatic Subunits in the Ladder π-System | 作者: | Chung, C.-L. Chen, H.-C. Yang, Y.-S. Tung, W.-Y. Chen, J.-W. Chen, W.-C. Wu, C.-G. |
公開日期: | 2018 | 卷: | 10 | 期: | 7 | 起(迄)頁: | 6471-6483 | 來源出版物: | ACS Applied Materials and Interfaces | 摘要: | Three novel donor-acceptor alternating polymers containing ladder-type pentacyclic heteroacenes (PBo, PBi, and PT) are synthesized, characterized, and further applied to organic field effect transistors (OFETs) and polymer solar cells. Significant aspects of quinoidal characters, electrochemical properties, optical absorption, frontier orbitals, backbone coplanarity, molecular orientation, charge carrier mobilities, morphology discrepancies, and the corresponding device performances are notably different with various heteroarenes. PT exhibits a stronger quinoidal mesomeric structure, linear and coplanar conformation, smooth surface morphology, and better bimodal crystalline structures, which is beneficial to extend the π-conjugation and promotes charge transport via 3-D transport pathways and in consequence improves overall device performances. Organic photovoltaics based on the PT polymer achieve a power conversion efficiency of 6.04% along with a high short-circuit current density (JSC) of 14.68 mA cm-2, and a high hole mobility of 0.1 cm2 V-1 s-1 is fulfilled in an OFET, which is superior to those of its counterparts, PBi and PBo. © 2018 American Chemical Society. |
URI: | https://www.scopus.com/inward/record.uri?eid=2-s2.0-85042525174&doi=10.1021%2facsami.7b15584&partnerID=40&md5=3253dd9dd6cd823ee9b8c3b1132e50d7 https://scholars.lib.ntu.edu.tw/handle/123456789/415823 |
DOI: | 10.1021/acsami.7b15584 | SDG/關鍵字: | Bismuth compounds; Carrier mobility; Electromagnetic wave absorption; Hole mobility; Ladders; Light absorption; Molecular orientation; Optical properties; Organic field effect transistors; Organic polymers; Organic solar cells; Phototransistors; Polymer solar cells; Polymers; Solar cells; Aromatic sub-units; Crystalline structure; Device performance; Heteroacenes; Organic photovoltaics; Power conversion efficiencies; quinoidal; Transport pathways; Field effect transistors |
顯示於: | 化學系 |
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