Carbon nanotubes assisting interchain charge transport in semiconducting polymer thin films towards much improved charge carrier mobility

作     者：Zhe Zheng Zhenjie Ni Xiaotao Zhang Yonggang Zhen Huanli Dong Jin Zhang Wenping Hu 郑哲;倪振杰;张小涛;甄永刚;董焕丽;张锦;胡文平

作者机构：Tianjin Key Laboratory of Molecular Optoelectronic ScienceDepartment of ChemistrySchool of ScienceTianjin University and Collaborative Innovation Center of Chemical Science and Engineering (Tianjin) Beijing National Laboratory for Molecular SciencesKey Laboratory of Organic SolidsInstitute of ChemistryChinese Academy of Sciences Center for NanochemistryBeijing Science and Engineering Center for NanocarbonsBeijing National Laboratory for Molecular Sciences (BNLMS)College of Chemistry and Molecular EngineeringPeking University 

出 版 物：《Science China Materials》 (中国科学（材料科学（英文版）)

年 卷 期：2019年第62卷第6期

页      面：813-822页

核心收录：

学科分类：081704[工学-应用化学] 07[理学] 08[工学] 0817[工学-化学工程与技术] 070305[理学-高分子化学与物理] 080501[工学-材料物理与化学] 0805[工学-材料科学与工程（可授工学、理学学位）] 0703[理学-化学] 

基　　金：financial support from the Ministry of Science and Technology of China (2017YFA0204503 and 2016YFB0401100) the National Natural Science Foundation of China (51725304, 51633006, 51703159, 51733004 and 21875259) the Strategic Priority Research Program (XDB12030300) the Chinese Academy of Sciences and the National Program for Support of Top-notch Young Professionals 

主　　题：conjugated polymer s-SWNTs connected conducting channel carrier mobility 

摘      要：Conjugated polymers attracted much attention in the past few decades due to their wide applications in various optoelectronic devices and circuits. The charge transport process in conjugated polymers mainly occurs in the intrachain and interchain parts, where the interchain charge transport is generally slower than intrachain transport and may slow down the whole charge transport properties. Aiming at this issue, herein we employ semiconducting single-walled carbon nanotubes(s-SWNTs) as efficient charge-transporting jointing channels between conjugated polymer chains for improving the charge transport performance. Taking the typical conjugated polymer, ploy-N-alkyl-diketopyrrolopyrrole-dithienylthieno[3,2-b]thiophene(PDPP-TT) as an example, polymer thin film transistors(PTFTs) based on the optimized blended films of PDPP-TT/s-SWNTs exhibit an obviously increasing device performance compared with the devices based on pure PDPP-TT films, with the hole and electron mobility increased from 2.32 to 12.32 cm^2 V^-1 s^-1 and from 2.02 to 5.77 cm^2 V^-1 s^-1, respectively. This result suggests the importance of forming continuous conducting channels in conjugated polymer thin films, which can also be extended to other polymeric electronic and optoelectronic devices to promote their potential applications in large-area, low-cost and high performance polymeric electronic devices and circuits.