Top-contact organic electrochemical transistors
Top-contact organic electrochemical transistors
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DOI：
10.1063/5.0087638
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发表时间：
2022-04
期刊：
影响因子：
1.6
通讯作者：
P. Paudel;Drona Dahal;Raj Kishen Radha Krishnan;Michael Skowrons;B. Lüssem
中科院分区：
文献类型：
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作者：
P. Paudel;Drona Dahal;Raj Kishen Radha Krishnan;Michael Skowrons;B. Lüssem
有机电化学晶体管（OECTs）将离子转换为电信号，这使其成为广泛的生物电子应用的有希望的候选者。然而，尽管他们的承诺，他们的设备的几何形状对性能的影响仍然没有完全理解。在这里，两种不同的器件几何形状的顶部接触和底部接触OECTs的比较，在他们的接触电阻，再现性和开关速度。它示出，底部接触器件具有更快的开关时间，而他们的顶部接触对应物是优越的上级方面略有减少的接触电阻和增加的再现性。讨论了速度和再现性之间的这种权衡的起源，这为特定的应用提供了优化指南。
Organic electrochemical transistors (OECTs) transduce ionic into electric signals, which makes them a promising candidate for a wide range of bio-electronic applications. However, despite their promise, the influence of their device geometry on performance is still not fully understood. Here, two different device geometries—top contact and bottom contact OECTs—are compared in terms of their contact resistance, reproducibility, and switching speed. It is shown that bottom contact devices have faster switching times, while their top-contact counterparts are superior in terms of slightly reduced contact-resistance and increased reproducibility. The origin of this trade-off between speed and reproducibility is discussed, which provides optimization guidelines for a particular application.