Inkjet-printed, self-aligned organic Schottky diodes on imprinted plastic substrates
Inkjet-printed, self-aligned organic Schottky diodes on imprinted plastic substrates
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DOI：
10.1088/2058-8585/ab670a
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发表时间：
2020-03-01
影响因子：
3.1
通讯作者：
Frisbie, C. Daniel
中科院分区：
文献类型：
--
作者：
Cao, Motao;Hyun, Woo Jin;Frisbie, C. Daniel
卷对卷印刷提供了以低成本制造大量柔性电子器件的有效方式。然而，构建诸如二极管的单个多层电子器件需要精确的层对层对准，这是目前卷对卷印刷的主要技术挑战。在这里，我们报告了一种新的自对准策略，以制造完全印刷的有机肖特基二极管预图案化的塑料基板上。该策略利用毛细通道的压印网络来引导通过喷墨印刷顺序输送到相邻油墨接收器中的油墨流，从而允许在微米级的自对准。毛细管通道和墨水接收器的优化设计实现了更好地控制墨水流量，并显着提高了器件的良率。印刷二极管具有出色的整流比（>10（4））和出色的抗反复弯曲稳定性。我们的工作展示了一个有前途的方法，大规模制造柔性和印刷二极管。
Roll-to-roll printing provides an efficient way to fabricate large quantities of flexible electronic devices at low cost. However, building a single multilayered electronic device such as a diode requires precise layer-to-layer alignment, which is currently a major technical challenge for roll-to-roll printing. Here, we report a novel self-aligned strategy to fabricate fully printed organic Schottky diodes on pre-patterned plastic substrates. This strategy utilizes imprinted networks of capillary channels to guide the flow of inks delivered sequentially into adjoining ink receivers by inkjet printing, allowing self-alignment at the micrometer level. The optimized design of the capillary channels and ink receivers realized better control of ink flows and significantly improved device yield. Printed diodes exhibited outstanding rectification ratios (>10(4)) and excellent stability against repeated bending. Our work demonstrates a promising method for large-scale manufacturing of flexible and printed diodes.