标题: 聚(3-己基噻吩)奈米线应用于不同形貌材料的制备与光物理性质鉴定
Fabrication of Materials with Different Morphologies Based on Poly(3-hexylthiophene) Nanowires and Characterization of Photophysical Properties
作者: 钟佩芸
陈俊太
Chung, Pei-Yun
Chen, Jiun-Tai
应用化学系硕博士班
关键字: 聚(3-己基噻吩);奈米线;去润湿;微乳液;光激萤光;Poly(3-hexylthiophene);Nanowires;Dewetting;Mini-Emulsion;Photoluminescence
公开日期: 2017
摘要: 近年来,高分子材料相关之研究蓬勃发展,其中以有机共轭高分子最受瞩目,因为其具有良好的结晶性、光电特性以及高分子本身自组装之特性,目前已被广泛应用于有机场效电晶体(Organic field-effect transistors, OFETs)、生物传感器(Biosensors)和共轭高分子太阳能电池(Conjugated polymer solar cells, CPSC)等元件中。在各式有机共轭高分子中,又以聚(3-己基噻吩)(Poly(3-hexylthiophene), P3HT)之研究最为热门,因其具有绝佳的化学稳定性、高性能且制备简单等优点,充满应用潜力。虽然目前已有许多针对聚(3-己基噻吩)之研究,但在如何控制其形貌与特性仍是一大挑战。本研究以晶须法(Whisker method)的技术为基础制备聚(3-己基噻吩)奈米线,并将此奈米线应用于薄膜与粒子等不同形貌之材料,除此之外,更针对聚(3-己基噻吩)奈米线的形貌结构以及光物理性质做高解析鉴定。
本论文之实验结果共分三个部分。第一部分我们成功制备含有聚(3-己基噻吩)奈米线之薄膜并探讨聚(3-己基噻吩)的去润湿(Dewetting)现象对薄膜形貌之影响,以及聚(3-己基噻吩)奈米线对去润湿现象之影响。在第二部分尝试结合晶须法与微乳液法(Mini-emulsion),成功制备含结晶性的聚(3-己基噻吩)奈米线之微米粒子,并探讨聚(3-己基噻吩)奈米线对微米粒子特性之影响。最后一部分与中研院合作,利用高解析显微镜量测单根奈米线结晶行为以及光电性质。本论文不仅提出聚(3-己基噻吩)奈米线应用于薄膜与粒子材料的新颖制备方法,同时也对聚(3-己基噻吩)奈米线的分子结构排列提供更深层的了解。
Poly(3-hexylthiophene) (P3HT), the benchmark polymer of the low-bandgap conjugated polymers, has been extensively studied because of its attractive properties such as high optoelectronic performance, chemical stability, and solution processability. Therefore, it has great potential in applications such as organic photovoltaic devices (OPV), biosensors, and organic field-effect transistors (OFETs). Thin films of P3HT have been widely investigated, but the dewetting phenomena and morphology control of P3HT are still not well-understood. In this thesis, P3HT nanowires are fabricated by the whisker method and properties of films and wires in various conditions are discussed. The experimental results are separated into three parts. In the first part, we study the dewetting phenomena of P3HT films and wires by controlling the spin-coating rates, substrates, and solvent annealing times. It can provide useful information of spin-coated P3HT films for device fabrications. In the second part, we successfully prepare P3HT microspheres with high crystallinities by combining the whisker method and the emulsion method. Such P3HT microspheres may have more potential applications than those prepared only using the emulsion method. In the last part, we cooperate with Prof. Chi Chen’s group in Academia Sinica to study the crystallization behavior and photophysical properties of single P3HT nanowires using HR-AFM and Photoluminescence.
URI: http://etd.lib.nctu.edu.tw/cdrfb3/record/nctu/#GT070452530
http://hdl.handle.net/11536/141732
显示于类别:Thesis