| 초록 |
Solvent vapor annealing (SVA) has emerged as an effective strategy that can control the morphologies and molecular ordering of conjugated polymer films. In this study, we demonstrate that charge carrier mobility of P3HT nanowire (NW) films can be improved simply by a SVA technique. The effects of solvent vapor annealing on the molecular ordering and morphologies of the resultant P3HT films were systematically investigated using ultraviolet-visible (UV-vis) spectroscopy, polarized optical microscopy (POM), grazing incidence X-ray diffraction (GIXRD), and atomic force microscopy (AFM). A good solvent vapor led to better self-organization of P3HT chains than a poor solvent vapor, resulting in an enhanced charge transport of the P3HT films. Consequently, the mobility of the P3HT NW-films was increased by a solvent vapor annealing with chlorobenzene from 0.08 to 0.12 cm2 V-1 s-1. |
