State Key Laboratory of Supramolecular Structure and Materials;
Jilin University;
Changchun 130012;
P.R.China;
National Local Joint Engineering Laboratory for Synthesis Technology of High Performance Polymer;
College of Chemistry;
Jilin University;
Changchun 130012;
P.R.China;
Extermal elecric field; Solvent vapor annealing; Poly(9; 9-dioctylfluorene); β-Phase; Carrier mobility;