Hole mobility enhancement by chain alignment in nanoimprinted poly(3-hexylthiophene) nanogratings for organic electronics
- 1 November 2010
- journal article
- Published by American Vacuum Society in Journal of Vacuum Science & Technology B
- Vol. 28 (6) , C6M63-C6M67
Abstract
The authors report that the poly(3-hexylthiophene-2,5-diyl) (P3HT) nanogratings shaped by nanoimprint lithography show enhanced hole mobility and strong anisotropy of conductance due to nanoimprint-induced three-dimensional polymer chain alignment. Field effect transistors were fabricated using these nanogratings and device measurements show a hole mobility of 0.03 cm2/V s along the grating direction, which is about 60 times higher than that of nonoptimized thin film transistors. Organic photovoltaic devices (OPV) were made using the P3HT nanograting with infiltration of [6,6]-phenyl-C61-butyric acid methyl ester. Compared to similar bilayer and bulk heterojunction devices, the nanoimprinted OPV shows improved device performance.Keywords
This publication has 28 references indexed in Scilit:
- The influence of thermal annealing on the morphology and structural properties of a conjugated polymer in blends with an organic acceptor materialJournal of Materials Science, 2009
- Continuous production of uniform poly(3-hexylthiophene) (P3HT) nanofibers by electrospinning and their electrical propertiesJournal of Materials Chemistry, 2008
- Introducing organic nanowire transistorsMaterials Today, 2008
- Improvements of fill factor in solar cells based on blends of polyfluorene copolymers as electron donorsThin Solid Films, 2007
- High-mobility polymer thin-film transistors fabricated by solvent-assisted drop-castingOrganic Electronics, 2006
- Origin of the enhanced performance in poly(3-hexylthiophene): [6,6]-phenyl C61-butyric acid methyl ester solar cells upon slow drying of the active layerApplied Physics Letters, 2006
- Highly oriented crystals at the buried interface in polythiophene thin-film transistorsNature Materials, 2006
- The Limits to Organic Photovoltaic Cell EfficiencyMRS Bulletin, 2005
- Printable anodes for flexible organic solar cell modulesThin Solid Films, 2004
- 2.5% efficient organic plastic solar cellsApplied Physics Letters, 2001