Alignment and Charge Transport of One-Dimensional Conjugated Polymer Nanowires in Insulating Polymer Blends

详细信息    查看全文

• 作者：Mincheol Chang ; Zhe SuEilaf Egap
• 刊名：Macromolecules
• 出版年：2016
• 出版时间：December 27, 2016
• 年：2016
• 卷：49
• 期：24
• 页码：9449-9456
• 全文大小：703K
• ISSN：1520-5835

文摘

Self-assembled and well-aligned nanowires (NWs) of poly(3-hexylthiophenes) (P3HT) embedded within insulating polystyrene (PS) matrix were found to have a high field-effect carrier mobility. We demonstrate that solution shear coating of P3HT-NWs/PS nanocomposites is an effective strategy in aligning P3HT NWs in the presence of PS and has a significant impact on the molecular order, morphology, and consequently charge transport. Shear-coated P3HT-NWs/PS nanocomposites consistently exhibited higher carrier mobilities compared to P3HT NWs or pristine P3HT/PS films by up to 10.2-fold. P3HT-NWs/PS nanocomposites containing only 3 wt % P3HT exhibit a mobility of ∼0.053 cm² V^–1 s^–1, which is comparable to that of the 30 wt % P3HT (∼0.064 cm² V^–1 s^–1) and even higher than that of 100 wt % P3HT (∼0.024 cm² V^–1 s^–1).