佩多:嘘
材料科学
印刷电子产品
晶体管
光电子学
印刷电路板
聚合
导电聚合物
跨导
表面粗糙度
纳米技术
聚合物
图层(电子)
墨水池
复合材料
电气工程
电压
工程类
作者
Robert Brooke,Kosala Wijeratne,Kathrin Hübscher,Dagmawi Belaineh,Peter Andersson Ersman
标识
DOI:10.1002/admt.202101665
摘要
Abstract Large area manufacturing of printed electronic components on ~A4‐sized substrates is demonstrated by the combination of screen printing and vapor phase polymerization (VPP) into poly(3,4‐ethylenedioxythiophene) (PEDOT). The oxidant layer required for the polymerization process is screen printed, and the resulting conductive polymer patterns are manufactured at high resolution (100 µm). Successful processing of several common oxidant species is demonstrated, and the thickness can be adjusted by altering the polymerization time. By comparing the polymer films of this work to a commercial PEDOT:PSS (PEDOT doped with poly(styrene sulfonate)) screen printing ink shows improved surface roughness (26 vs 69 nm), higher conductivity (500 vs 100 S cm –1 ) and better resolution (100 vs 200 µm). Organic electrochemical transistors, in which the transistor channel is polymerized into PEDOT through VPP, are also demonstrated to further emphasize on the applicability of this manufacturing approach. The resulting transistor devices are not only functional, they also show remarkable switching behavior with respect to ON current levels (–70 mA at –1 V), ON/OFF ratios (>10 5 ), switching times (tens of ms) and transconductance values (>100 mS) in standalone transistor devices, in addition to a high amplification factor (>30) upon integration into a screen printed inverter circuit.
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