Field-effect mobility as high as 5 cm2/(Vs) is achieved in solution-processed organic thin-film transistors with the development of a method for growing highly-oriented crystalline films of benzothieno[32-b] benzothiophene derivatives. A droplet of the solution is sustained at an edge of a structure on an inclined substrate so that the crystalline domain grows in the direction of inclination. The oriented growth realizes excellent molecular ordering that manifests itself in micrometer-scale molecular terraces on the surface as a result of the self-organizing function of the material. The unprecedented performance achieved using an easy fabrication process has increased attractiveness of organic thin-film transistors for industrial applications.
ASJC Scopus subject areas
- Physics and Astronomy(all)