Collaborative Morphological and Electrical Regulation of High-Mobility Conjugated Polymers via a Multifunctional Polymeric Additive

IF 5.1 1区化学 Q1 POLYMER SCIENCE

Macromolecules Pub Date : 2024-11-08 DOI:10.1021/acs.macromol.4c02133

Chenhui Xu, Chuanbin An, Mengyuan Gao, Xuwen Zhang, Chunyong He, Weijia Dong, Tianzuo Wang, Yuqian Liu, Yunfeng Deng, Long Ye, Yang Han, Yanhou Geng

{"title":"Collaborative Morphological and Electrical Regulation of High-Mobility Conjugated Polymers via a Multifunctional Polymeric Additive","authors":"Chenhui Xu, Chuanbin An, Mengyuan Gao, Xuwen Zhang, Chunyong He, Weijia Dong, Tianzuo Wang, Yuqian Liu, Yunfeng Deng, Long Ye, Yang Han, Yanhou Geng","doi":"10.1021/acs.macromol.4c02133","DOIUrl":null,"url":null,"abstract":"Morphological and electrical control over conjugated polymers has a great potential for the fabrication of high-performance organic thin-film transistors (OTFTs). Herein, we employed a multifunctional polymeric additive, namely, PBTTT-b-HTPB, to optimize the molecular packing order of an isoindigo-based model polymer (IIDSiC8) and simultaneously regulate the minority carriers for boosted transport properties in OTFTs via facile solution processing. By detailed comparative study, we demonstrated that PBTTT-b-HTPB remarkably improved the crystallinity of IIDSiC8 by forming elongated fibers with higher molecular order in a thin film, which originated from the larger size ordered solution aggregates due to the presence of the insulating block. On the other hand, the p-type conjugated block of PBTTT worked as a hole trapping center, resulting in significantly increased electron density, reduced off-current, and optimal n-type performance. Benefiting from the collaborative morphological and electrical regulation, IIDSiC8/PBTTT-b-HTPB films displayed well-aligned ordered morphology and a high electron mobility up close to 7 cm2 V–1 s–1 together with an on/off ratio of 106 in bar-coated OTFTs. The high electron mobility is among the top performance values reported for isoindigo-based polymers. Our work has achieved simultaneous optimization of film microstructures and carrier transport characteristics of polymer semiconductors, providing opportunities for the production of OTFT devices with a superior performance.","PeriodicalId":51,"journal":{"name":"Macromolecules","volume":"196 1","pages":""},"PeriodicalIF":5.1000,"publicationDate":"2024-11-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Macromolecules","FirstCategoryId":"92","ListUrlMain":"https://doi.org/10.1021/acs.macromol.4c02133","RegionNum":1,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q1","JCRName":"POLYMER SCIENCE","Score":null,"Total":0}

引用次数: 0

Abstract

Morphological and electrical control over conjugated polymers has a great potential for the fabrication of high-performance organic thin-film transistors (OTFTs). Herein, we employed a multifunctional polymeric additive, namely, PBTTT-b-HTPB, to optimize the molecular packing order of an isoindigo-based model polymer (IIDSiC8) and simultaneously regulate the minority carriers for boosted transport properties in OTFTs via facile solution processing. By detailed comparative study, we demonstrated that PBTTT-b-HTPB remarkably improved the crystallinity of IIDSiC8 by forming elongated fibers with higher molecular order in a thin film, which originated from the larger size ordered solution aggregates due to the presence of the insulating block. On the other hand, the p-type conjugated block of PBTTT worked as a hole trapping center, resulting in significantly increased electron density, reduced off-current, and optimal n-type performance. Benefiting from the collaborative morphological and electrical regulation, IIDSiC8/PBTTT-b-HTPB films displayed well-aligned ordered morphology and a high electron mobility up close to 7 cm² V^–1 s^–1 together with an on/off ratio of 10⁶ in bar-coated OTFTs. The high electron mobility is among the top performance values reported for isoindigo-based polymers. Our work has achieved simultaneous optimization of film microstructures and carrier transport characteristics of polymer semiconductors, providing opportunities for the production of OTFT devices with a superior performance.

Abstract Image

查看原文本刊更多论文

通过多功能聚合物添加剂协同调节高流动性共轭聚合物的形态和电性

共轭聚合物的形态和电学控制在制造高性能有机薄膜晶体管（OTFT）方面具有巨大潜力。在本文中，我们采用了一种多功能聚合物添加剂（即 PBTTT-b-HTPB ）来优化异靛蓝基模型聚合物（IIDSiC8）的分子堆积顺序，并同时调节少数载流子，从而通过简便的溶液加工提高 OTFT 的传输性能。通过详细的对比研究，我们发现 PBTTT-b-HTPB 能够在薄膜中形成分子排列顺序更高的细长纤维，从而显著提高 IIDSiC8 的结晶度。另一方面，PBTTT 的 p 型共轭嵌段可作为空穴捕获中心，从而显著提高电子密度、降低关断电流并优化 n 型性能。IIDSiC8/PBTTT-b-HTPB 薄膜得益于协同的形态和电学调节，呈现出排列有序的形态，电子迁移率接近 7 cm2 V-1 s-1，在条状涂层 OTFT 中的导通/关断比达到 106。高电子迁移率是异靛蓝基聚合物的最高性能值之一。我们的工作实现了聚合物半导体的薄膜微结构和载流子传输特性的同步优化，为生产具有卓越性能的 OTFT 器件提供了机会。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

求助全文

约1分钟内获得全文求助全文

来源期刊

Macromolecules 工程技术-高分子科学

CiteScore

9.30

自引率

16.40%

发文量

942

审稿时长

2 months

期刊介绍： Macromolecules publishes original, fundamental, and impactful research on all aspects of polymer science. Topics of interest include synthesis (e.g., controlled polymerizations, polymerization catalysis, post polymerization modification, new monomer structures and polymer architectures, and polymerization mechanisms/kinetics analysis); phase behavior, thermodynamics, dynamic, and ordering/disordering phenomena (e.g., self-assembly, gelation, crystallization, solution/melt/solid-state characteristics); structure and properties (e.g., mechanical and rheological properties, surface/interfacial characteristics, electronic and transport properties); new state of the art characterization (e.g., spectroscopy, scattering, microscopy, rheology), simulation (e.g., Monte Carlo, molecular dynamics, multi-scale/coarse-grained modeling), and theoretical methods. Renewable/sustainable polymers, polymer networks, responsive polymers, electro-, magneto- and opto-active macromolecules, inorganic polymers, charge-transporting polymers (ion-containing, semiconducting, and conducting), nanostructured polymers, and polymer composites are also of interest. Typical papers published in Macromolecules showcase important and innovative concepts, experimental methods/observations, and theoretical/computational approaches that demonstrate a fundamental advance in the understanding of polymers.