Get access
Advanced Materials

Achieving Perpendicular Alignment of Rigid Polythiophene Backbones to the Substrate by Using Solvent-Vapor Treatment

Authors

  • G. H. Lu,

    1. State Key Laboratory of Polymer Physics and Chemistry, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Graduate School of the Chinese Academy of Sciences, Renmin St. 5625, Changchun 130022 (P.R. China)
    Search for more papers by this author
  • L. G. Li,

    1. State Key Laboratory of Polymer Physics and Chemistry, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Graduate School of the Chinese Academy of Sciences, Renmin St. 5625, Changchun 130022 (P.R. China)
    Search for more papers by this author
  • X. N. Yang

    1. State Key Laboratory of Polymer Physics and Chemistry, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Graduate School of the Chinese Academy of Sciences, Renmin St. 5625, Changchun 130022 (P.R. China)
    Search for more papers by this author

  • This work was supported by the National Natural Science Foundation of China (Grant No. 20604029). X.N.Y. would like to thank the Fund for Creative Research Groups (Grant No. 50621302) for financial support. Supporting Information is available online from Wiley InterScience or from the author.

Abstract

The rigid backbone of the poly(3-butylthiophene) molecule adopts a perpendicular orientation with respect to the substrate by using a solvent-vapor treatment (see figure). Small and closely contacting spherulites instead of conventional whisker-like crystals are achieved. This could be utilized to improve charge-carrier mobility particularly in the direction normal to the film plane by designing and constructing thick crystalline domains in the functional layer.

original image
Get access to the full text of this article

Ancillary