Abstract We systematically studied a simple post-treatment method for improving the structural and electrical characteristics of dip-coated poly(3-hexylthiophene) (P3HT) thin films through direct dipping into a solvent. The molecular structure and electrical and optical properties of the P3HT thin films were greatly influenced by the solubility parameter differences between P3HT and the post-treatment solvents. The post-treatment with xylene substantially improved the crystallinity and enhanced the electrical properties in the P3HT thin film, although film thickness decreased. Through optimization of the solubility parameter differences between P3HT and post-treatment solvents, device performance was improved by an appropriate combination of reduced film thickness and improved molecular structure.

中文翻译：

---

通过溶剂浸渍后处理改善聚噻吩薄膜的分子结构

摘要 我们系统地研究了一种简单的后处理方法，通过直接浸入溶剂来改善浸涂聚（3-己基噻吩）（P3HT）薄膜的结构和电学特性。P3HT 薄膜的分子结构和电学和光学性质受 P3HT 和后处理溶剂之间溶解度参数差异的影响很大。用二甲苯进行后处理显着提高了结晶度并增强了 P3HT 薄膜的电性能，尽管薄膜厚度降低了。通过优化 P3HT 和后处理溶剂之间的溶解度参数差异，通过适当组合降低薄膜厚度和改进分子结构来提高器件性能。