Liquid-Crystalline Semiconducting Copolymers with Intramolecular Donor-Acceptor Building Blocks for High-Stability Polymer Transistors

被引：212

作者：

Kim, Do Hwan ^{[1
]}

Lee, Bang-Lin ^{[1
]}

Moon, Hyunsik ^{[1
]}

Kang, Hee Min ^{[1
]}

Jeong, Eun Jeong ^{[1
]}

Park, Jeong-Il ^{[1
]}

Han, Kuk-Min ^{[1
]}

Lee, Sangyoon ^{[1
]}

Yoo, Byung Wook ^{[1
]}

Koo, Bon Won ^{[1
]}

Kim, Joo Young ^{[1
]}

Lee, Wi Hyoung ^{[3
]}

Cho, Kilwon ^{[3
]}

Becerril, Hector Alejandro ^{[2
]}

Bao, Zhenan

机构：

[1] Samsung Elect Co Ltd, Samsung Adv Inst Technol, Mat & Device Inst, Display Lab, Yongin 446712, South Korea

[2] Stanford Univ, Dept Chem Engn, Stanford, CA 94305 USA

[3] Pohang Univ Sci & Technol, Dept Chem Engn, Pohang 790784, South Korea

来源：

JOURNAL OF THE AMERICAN CHEMICAL SOCIETY | 2009年 / 131卷 / 17期

关键词：

THIN-FILM TRANSISTORS; FIELD-EFFECT TRANSISTORS; X-RAY-SCATTERING; CONJUGATED POLYMERS; HIGH-MOBILITY; BIAS STRESS; ORGANIC TRANSISTORS; PRINTING TECHNIQUES; THIOPHENE; PERFORMANCE;

D O I：

10.1021/ja8095569

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

The ability to control the molecular organization of electronically active liquid-crystalline polymer semiconductors on surfaces provides opportunities to develop easy-to-process yet highly ordered supramolecular systems and, in particular, to optimize their electrical and environmental reliability in applications in the field of large-area printed electronics and photovoltaics. Understanding the relationship between liquid-crystalline nanostructure and electrical stability on appropriate molecular surfaces is the key to enhancing the performance of organic field-effect transistors (OFETs) to a degree comparable to that of amorphous silicon (a-Si). Here, we report a novel donor-acceptor type liquid-crystalline semiconducting copolymer, poly(didodecylquaterthiophene-alt-didodecylbithiazole), which contains both electron-donating quaterthiophene and electron-accepting 5,5'-bithiazole units. This copolymer exhibits excellent electrical characteristics such as field-effect mobilities as high as 0.33 cm(2)/V.s and good bias-stress stability comparable to that of amorphous silicon (a-Si). Liquid-crystalline thin films with structural anisotropy form spontaneously through self-organization of individual polymer chains as a result of intermolecular interactions in the liquid-crystalline mesophase. These thin films adopt preferential well-ordered intermolecular pi-pi, stacking parallel to the substrate surface. This bottom-up assembly of the liquid-crystalline semiconducting copolymer enables facile fabrication of highly ordered channel layers with remarkable electrical stability.

引用

页码：6124 / 6132

页数：9

共 64 条

[1] Soluble and processable regioregular poly(3-hexylthiophene) for thin film field-effect transistor applications with high mobility [J].