期刊
NANO LETTERS
卷 12, 期 12, 页码 6353-6357出版社
AMER CHEMICAL SOC
DOI: 10.1021/nl303612z
关键词
Organic field-effect transistor; conjugated polymer; nanostructure; long-range orientation; macroscopic alignment; regioregular polymer
类别
资金
- MC-CAM Program at UCSB
- Mitsubishi Chemical Corporation (Japan)
- ConvEne IGERT Program [NSF-DGE 0801627]
- National Science Foundation (GRFP)
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']dithiophen-2-y1)-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 cm(2)/(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.
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