An Ultrahigh Mobility in Isomorphic Fluorobenzo[c]-[1,2,5]thiadiazole-Based Polymers

被引：44

作者：

Lee, Junghoon ^{[1
,2
]}

Kang, So-Huei ^{[1
]}

Lee, Sang Myeon ^{[1
]}

Lee, Kyu Cheol ^{[1
]}

Yang, Heesoo ^{[4
]}

Cho, Yongjoon ^{[1
]}

Han, Daehee ^{[1
]}

Li, Yongfang ^{[3
]}

Lee, Byoung Hoon ^{[4
]}

Yang, Changduk ^{[1
]}

机构：

[1] UNIST, Low Dimens Carbon Mat Ctr, Perovtron Res Ctr, Dept Energy Engn,Sch Energy & Chem Engn, 50 UNIST Gil, Ulsan 44919, South Korea

[2] Dongseo Univ, Div Chem Engn, 47 Jurye Ro, Busan 47011, South Korea

[3] Chinese Acad Sci, Inst Chem, CAS Key Lab Organ Solids, Beijing Natl Lab Mol Sci, Beijing 100190, Peoples R China

[4] Ewha Womans Univ, Div Chem Engn & Mat Sci, Seoul 03760, South Korea

来源：

ANGEWANDTE CHEMIE-INTERNATIONAL EDITION | 2018年 / 57卷 / 41期

基金：

新加坡国家研究基金会;

关键词：

cyclopentadithiophene; fluoro-benzothiadiazole; organic field-effect transistors; polymer chemistry; regioregularity; FIELD-EFFECT TRANSISTORS; LARGE-AREA ELECTRONICS; THIN-FILM TRANSISTORS; OPEN-CIRCUIT VOLTAGE; CONJUGATED POLYMER; SEMICONDUCTING POLYMERS; SOLAR-CELLS; FLUORINE SUBSTITUTION; ORGANIC TRANSISTORS; AMORPHOUS-SILICON;

D O I：

10.1002/anie.201808098

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

To understand the effects rendered on the relevant basic physical properties and device function by controlling the regiochemistry of the cyclopenta[1,2-b:5,4-b'] dithiophene-fluorobenzo[c][1,2,5] thiadiazole polymer (hereafter referred to as the CDT-FBT polymer), two polymers, the regiorandom polymer (RA) and regioregular version (RR), respectively, are synthesized and characterized. In addition, an efficient route for synthesizing a key monomer for RR using various synthesis scope and optimizing the reaction conditions is discussed. Although RA exhibits optical, electrochemical, and morphological properties similar to RR, it shows better field-effect transistor (FET) performance. Surprisingly, by employing a capillarity-mediated sandwich-casting process on a nano-grooved substrate, an unprecedented mobility of 17.8 cm(2) V-1 s(-1) is obtained for RA-based FETs; this mobility value is almost twofold greater than those of the corresponding RR-based FETs. For the first time, this study challenges previously reported results in that high carrier mobility is related to the high degree of polymer order induced by the backbone regioregularity.

引用

页码：13629 / 13634

页数：6

共 41 条

[1] Fluorinated Copolymer PCPDTBT with Enhanced Open-Circuit Voltage and Reduced Recombination for Highly Efficient Polymer Solar Cells [J].