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;