High Mobility Field Effect Transistors Based on Macroscopically Oriented Regioregular Copolymers

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• 作者：Hsin-Rong Tseng ; Lei Ying ; Ben B. Y. Hsu ; Louis A. Perez ; Christopher J. Takacs ; Guillermo C. Bazan ; Alan J. Heeger
• 刊名：Nano Letters
• 出版年：2012
• 出版时间：December 12, 2012
• 年：2012
• 卷：12
• 期：12
• 页码：6353-6357
• 全文大小：414K
• 年卷期：v.12,no.12(December 12, 2012)
• ISSN：1530-6992

文摘

Field-effect transistors fabricated from semiconducting conjugated polymers are candidates for flexible and low-cost electronic applications. Here, we demonstrate that the mobility of high molecular weight (300 kDa) regioregular, poly[4-(4,4-dihexadecyl-4H-cyclopenta[1,2-b:5,4-b鈥瞉dithiophen-2-yl)-alt-[1,2,5]thiadiazolo[3,4-c]pyridine] can be significantly improved by introducing long-range orientation of the polymer chains. By annealing for short periods, hole mobilities of 6.7 cm²/(V s) have been demonstrated. The transport is anisotropic, with a higher mobility (approximately 6:1) parallel to the polymer backbone than that perpendicular to the polymer backbone.

Keywords:

Organic field-effect transistor; jugated+polymer&qsSearchArea=searchText">conjugated polymer; nanostructure; long-range orientation; macroscopic alignment; regioregular polymer