Rickard Jonathan James Stanley, Farrer Ian, Oppenheimer Pola Goldberg
School of Chemical Engineering, University of Birmingham , Birmingham B15 2TT, United Kingdom.
Department of Physics, Cavendish Laboratory, University of Cambridge , Cambridge CB3 0HE, United Kingdom.
ACS Nano. 2016 Mar 22;10(3):3865-70. doi: 10.1021/acsnano.6b01246. Epub 2016 Feb 26.
An increasing number of technologies require the fabrication of conductive structures on a broad range of scales and over large areas. Here, we introduce advanced yet simple electrohydrodynamic lithography (EHL) for patterning conductive polymers directly on a substrate with high fidelity. We illustrate the generality of this robust, low-cost method by structuring thin polypyrrole films via electric-field-induced instabilities, yielding well-defined conductive structures with feature sizes ranging from tens of micrometers to hundreds of nanometers. Exploitation of a conductive polymer induces free charge suppression of the field in the polymer film, paving the way for accessing scale sizes in the low submicron range. We show the feasibility of the polypyrrole-based structures for field-effect transistor devices. Controlled EHL pattering of conductive polymer structures at the micro and nano scale demonstrated in this study combined with the possibility of effectively tuning the dimensions of the tailor-made architectures might herald a route toward various submicron device applications in supercapacitors, photovoltaics, sensors, and electronic displays.
越来越多的技术要求在广泛的尺度范围内和大面积上制造导电结构。在此，我们介绍一种先进且简单的电流体动力学光刻技术（EHL），用于在基板上直接以高保真度对导电聚合物进行图案化。我们通过电场诱导的不稳定性构建薄聚吡咯膜，展示了这种强大且低成本方法的通用性，从而产生具有从几十微米到几百纳米不等特征尺寸的明确导电结构。利用导电聚合物可抑制聚合物膜中场的自由电荷，为实现低亚微米范围内的尺度尺寸铺平了道路。我们展示了基于聚吡咯的结构用于场效应晶体管器件的可行性。本研究中展示的在微米和纳米尺度上对导电聚合物结构进行可控的EHL图案化，再加上有效调整定制架构尺寸的可能性，可能预示着通向超级电容器、光伏、传感器和电子显示器等各种亚微米器件应用的途径。
