Correlating Nanomorphology with Charge-Transport Anisotropy in Conjugated-Polymer Thin Films (pages 2988–2992)
Yi-Fang Huang, Chan-Wei Chang, Detlef-Matthias Smilgies, U-Ser Jeng, Anto Regis Inigo, Jonathon David White, Kang-Chuang Li, Tsong-Shin Lim, Tai-De Li, Hsiang-Yun Chen, Show-An Chen, Wen-Chang Chen and Wun-Shain Fann
Article first published online: 14 APR 2009 | DOI: 10.1002/adma.200803341
Anisotropic mobility in spin-coated MEH-PPV films is due to an interfacial layer of several nanometers at the film-substrate interface with a higher electron density assisted by local chain alignment parallel to the substrate. This layer is formed via spin-coating. The strength of this interface effect is dependent on the solvent used.