跨导
材料科学
制作
晶体管
纳米技术
光电子学
限制
晶体管阵列
放大器
电气工程
CMOS芯片
电压
工程类
病理
机械工程
医学
替代医学
作者
Mary J. Donahue,Adam Williamson,Xenofon Strakosas,Jacob T. Friedlein,Robert R. McLeod,Helena Glesková,George G. Malliaras
标识
DOI:10.1002/adma.201705031
摘要
Organic electrochemical transistors (OECTs) are promising transducers for biointerfacing due to their high transconductance, biocompatibility, and availability in a variety of form factors. Most OECTs reported to date, however, utilize rather large channels, limiting the transistor performance and resulting in a low transistor density. This is typically a consequence of limitations associated with traditional fabrication methods and with 2D substrates. Here, the fabrication and characterization of OECTs with vertically stacked contacts, which overcome these limitations, is reported. The resulting vertical transistors exhibit a reduced footprint, increased intrinsic transconductance of up to 57 mS, and a geometry-normalized transconductance of 814 S m-1 . The fabrication process is straightforward and compatible with sensitive organic materials, and allows exceptional control over the transistor channel length. This novel 3D fabrication method is particularly suited for applications where high density is needed, such as in implantable devices.
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