A heterotriangulene polymer for air-stable organic field-effect transistors

被引：27
|
作者：
Schmoltner, Kerstin [1 ]
Schluetter, Florian [2 ]
Kivala, Milan [2 ]
Baumgarten, Martin [2 ]
Winkler, Stefanie [3 ,4 ]
Trattnig, Roman [1 ]
Koch, Norbert [3 ,4 ]
Klug, Andreas [1 ]
List, Emil J. W. [1 ,5 ]
Muellen, Klaus [2 ]
机构：
[1] NanoTecCtr Weiz Forsch Gesell MbH, A-8160 Weiz, Austria
[2] Max Planck Inst Polymer Res, D-55021 Mainz, Germany
[3] Helmholtz Zentrum Berlin Mat & Energie GmbH Elekt, D-12489 Berlin, Germany
[4] Humboldt Univ, Inst Phys, D-12489 Berlin, Germany
[5] Graz Univ Technol, Inst Solid State Phys, A-8010 Graz, Austria
来源：
POLYMER CHEMISTRY | 2013年 / 4卷 / 20期
关键词：
THIN-FILM TRANSISTORS; CHARGE-CARRIER MOBILITY; CONJUGATED POLYMERS; DEVICES; HOLE; SEMICONDUCTORS; PERFORMANCE; INSULATORS; COPOLYMERS; ELECTRODES;
D O I：
10.1039/c3py00089c
中图分类号：
O63 [高分子化学（高聚物）];
学科分类号：
070305 ; 080501 ; 081704 ;
摘要：
We report on a novel air-stable p-type heterotriangulene polymer (PTA) for large-area organic field-effect transistor (OFET) applications. The newly synthesized amorphous organic semiconductor was characterized concerning morphological, optical, electrical and interface related properties and revealed a saturation mobility of similar to 4.2 x 10(-3) cm(2) V-1 s(-1) and an on/off current ratio of similar to 10(5) in bottom-gate/bottom-contact (BG/BC) OFETs. The influence of several interface modifications was investigated in order to optimize the device performance. PTA FETs exhibited excellent air stability over several months and a superior performance compared to the widely used poly(3-hexylthiophene)-based OFETs. Moreover, we show that hydrochloric acid in chloroform leads to protonation of the nitrogen atoms on the PTA polymer, resulting in a significant change of the electrical characteristics of OFETs.
引用
收藏
页码：5337 / 5344
页数：8
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