Lithography‐Free Microfabrication of Electrode Arrays with 2 μm Electrode Gaps Using Topographic Templates

Lithographic-free and simple fabrication methods for sub-10 μm electrode arrays are essential for many cost-effective organic electronic devices. Here we report a non-lithographic fabrication of electrode arrays with channel lengths as small as 2 μm based on spontaneous wrinkle feature formation and transfer printing. We utilize these structures as electrode arrays in solution-processable organic thin film transistors. This laboratory-scale lithography-free technique may permit rapid electrical characterization of many novel organic semiconducting materials and structures. As a service to our authors and readers, this journal provides supporting information supplied by the authors. Such materials are peer reviewed and may be re-organized for online delivery, but are not copy-edited or typeset. Technical support issues arising from supporting information (other than missing files) should be addressed to the authors. Please note: The publisher is not responsible for the content or functionality of any supporting information supplied by the authors. Any queries (other than missing content) should be directed to the corresponding author for the article.