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Magnetic-field guided solvent vapor annealing for enhanced molecular alignment and carrier mobility of a semiconducting diketopyrrolopyrrole-based polymer

文献类型：期刊论文

作者Xiao, Xuhua1,3; Pan, Guoxing3; Li, Tian1,3; Su, Songlin1,3; Zhu, Liangzheng3; Zhu, Xuebin4; Zhang, Fapei2,3
刊名JOURNAL OF MATERIALS CHEMISTRY C
出版日期2020-04-07
卷号8
ISSN号2050-7526
DOI10.1039/c9tc05803f
通讯作者Zhu, Liangzheng(lzzhu@hmfl.ac.cn) ; Zhang, Fapei(fzhang@hmfl.ac.cn)
英文摘要Controlling the molecular orientation of organic semiconductors is crucial to improving the performance of electronic devices. In this article, we describe a straightforward method to achieve large-area highly aligned films of a diketopyrrolopyrrole-bithiophene polymer (PDPP2TBT) by solvent vapor annealing (SVA) of the as-spun films under a high magnetic field. The structural characterizations disclose that the chain backbones of PDPP2TBT in the films are highly aligned to the applied magnetic field during SVA; meanwhile, the films exhibit high crystallinity. A mechanism is proposed to explain the magnetic alignment, based on the reformation of chain aggregates in the wet film exposed to solvent vapor. Field-effect transistors (FETs) based on the magnetically aligned PDPP2TBT films exhibit an enhancement of hole mobility (a maximum value of 1.56 cm(2) V-1 s(-1)) by a factor of 6 compared to the unaligned devices, as well as mobility anisotropy of three. Temperature-dependent FET mobility measurement reveals a remarkable lowering of thermally activated energy for carrier hopping in the aligned film. The results indicate the formation of a rapid intra-chain conduction pathway parallel to the chain alignment direction, which originates from the alignment-induced backbone extension and enhanced order of inter-chain packing.
WOS关键词CRYSTALLINE CONJUGATED POLYMERS ; EFFECT TRANSISTORS ; HIGH-PERFORMANCE ; CHARGE-TRANSPORT ; FILMS ; FABRICATION ; ANISOTROPY ; TEXTURE ; GROWTH
资助项目National Natural Science Foundation of China (NSFC)[11774348] ; National Natural Science Foundation of China (NSFC)[U1532156] ; National Key Research and Development Program of China[2016YFA0401801] ; Anhui Provincial Natural Science Foundation[1908085ME152] ; CASHIPS Director's Fund[YZJJ2019QN16]
WOS研究方向Materials Science ; Physics
语种英语
WOS记录号WOS:000526890100020
出版者ROYAL SOC CHEMISTRY
资助机构National Natural Science Foundation of China (NSFC) ; National Key Research and Development Program of China ; Anhui Provincial Natural Science Foundation ; CASHIPS Director's Fund
源URL[http://ir.hfcas.ac.cn:8080/handle/334002/103353]  
专题中国科学院合肥物质科学研究院
通讯作者Zhu, Liangzheng; Zhang, Fapei
作者单位1.Univ Sci & Technol China, Hefei 230026, Anhui, Peoples R China
2.Chinese Acad Sci, Key Lab Photovolta & Energy Conservat Mat, Hefei 230031, Anhui, Peoples R China
3.Chinese Acad Sci, Anhui Prov Key Lab Condensed Matter Phys Extreme, HMFL, Hefei 230031, Anhui, Peoples R China
4.Chinese Acad Sci, Key Lab Mat Phys, Inst Solid State Phys, Hefei 230031, Anhui, Peoples R China
推荐引用方式
GB/T 7714		 Xiao, Xuhua,Pan, Guoxing,Li, Tian,et al. Magnetic-field guided solvent vapor annealing for enhanced molecular alignment and carrier mobility of a semiconducting diketopyrrolopyrrole-based polymer[J]. JOURNAL OF MATERIALS CHEMISTRY C,2020,8.
APA Xiao, Xuhua.,Pan, Guoxing.,Li, Tian.,Su, Songlin.,Zhu, Liangzheng.,...&Zhang, Fapei.(2020).Magnetic-field guided solvent vapor annealing for enhanced molecular alignment and carrier mobility of a semiconducting diketopyrrolopyrrole-based polymer.JOURNAL OF MATERIALS CHEMISTRY C,8.
MLA Xiao, Xuhua,et al."Magnetic-field guided solvent vapor annealing for enhanced molecular alignment and carrier mobility of a semiconducting diketopyrrolopyrrole-based polymer".JOURNAL OF MATERIALS CHEMISTRY C 8(2020).

入库方式： OAI收割

来源：合肥物质科学研究院

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