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A nanogroove-guided slot-die coating technique for highly ordered polymer films and high-mobility transistors
Aung Ko Ko Kyaw1, Lim Siew Lay, Goh Wei Peng
1Institute of Materials Research and Engineering (A*STAR), 2 Fusionopolis Way, Singapore 138634. kyawakk@imre.a-star.edu.sg zhangj@imre.a-star.edu.sg.
Abstract:
A nanogroove-guided slot-die coating technique has been developed to manipulate the alignment of polymer chains within a short processing time. A combination of directional movement of slot-die and uniaxial nanogrooves on the substrate for the unidirectional flow of solution suppresses the multiple degrees of conformational freedom, resulting in long-range oriented polymer films and a high field effect mobility of ∼5 cm(2) V(-1) s(-1).
