Ultra-high mobility transparent organic thin film transistors grown by an off-centre spin-coating method

被引：915

作者：

Yuan, Yongbo ^{[1
,2
]}

Giri, Gaurav ^{[3
]}

Ayzner, Alexander L. ^{[3
,4
]}

Zoombelt, Arjan P. ^{[3
]}

Mannsfeld, Stefan C. B. ^{[4
]}

Chen, Jihua ^{[5
]}

Nordlund, Dennis ^{[4
]}

Toney, Michael F. ^{[4
]}

Huang, Jinsong ^{[1
,2
]}

Bao, Zhenan ^{[3
]}

机构：

[1] Univ Nebraska, Dept Mech & Mat Engn, Lincoln, NE 68588 USA

[2] Univ Nebraska, Nebraska Ctr Mat & Nanosci, Lincoln, NE 68588 USA

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

[4] SLAC Natl Accelerator Lab, Stanford Synchrotron Radiat Lightsource, Menlo Pk, CA 94025 USA

[5] Oak Ridge Natl Lab, Ctr Nanophase Mat Sci, Oak Ridge, TN 37831 USA

来源：

NATURE COMMUNICATIONS | 2014年 / 5卷

基金：

美国国家科学基金会;

关键词：

FIELD-EFFECT TRANSISTORS; THRESHOLD-VOLTAGE; CHARGE-TRANSPORT; SEMICONDUCTORS; IMPURITIES; PRESSURE; CRYSTALS; SENSORS;

D O I：

10.1038/ncomms4005

中图分类号：

O [数理科学和化学]; P [天文学、地球科学]; Q [生物科学]; N [自然科学总论];

学科分类号：

07 ; 0710 ; 09 ;

摘要：

Organic semiconductors with higher carrier mobility and better transparency have been actively pursued for numerous applications, such as flat-panel display backplane and sensor arrays. The carrier mobility is an important figure of merit and is sensitively influenced by the crystallinity and the molecular arrangement in a crystal lattice. Here we describe the growth of a highly aligned meta-stable structure of 2,7-dioctyl[1]benzothieno[3,2-b][1] benzothiophene (C8-BTBT) from a blended solution of C8-BTBT and polystyrene by using a novel off-centre spin-coating method. Combined with a vertical phase separation of the blend, the highly aligned, meta-stable C8-BTBT films provide a significantly increased thin film transistor hole mobility up to 43 cm(2)Vs(-1) (25 cm(2)Vs(-1) on average), which is the highest value reported to date for all organic molecules. The resulting transistors show high transparency of >90% over the visible spectrum, indicating their potential for transparent, high-performance organic electronics.

引用

页数：9

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