Inkjet-Printed Vertical Organic Field-Effect Transistor Arrays and Their Image Sensors

ACS Applied Materials & Interfaces
Yuan FangTailiang Guo

Abstract

Vertical organic field-effect transistors (VOFETs) have been explored with a higher current density, a faster switch speed, and a better air stability than conventional OFETs, which dramatically enhance the capability of driving an AMOLED backplane. Unfortunately, the state-of-the-art of the fabrication of solution-processed VOFETs is still very complicated, which can only focus at a single-cell level. In this work, with the assistance of the inkjet print, the fabrication process of a solution-processed VOFET was significantly simplified, and a solution-processed VOFET array was fabricated for the first time, which exhibited excellent device performance and outstanding mechanical stability. More importantly, the VOFET arrays exhibited excellent photodetector properties, and a flexible image sensor based on VOFET arrays with multipoint visible photodetection and image recognition was demonstrated for the first time. Therefore, this novel process dramatically simplified the VOFET device fabrication process and a successfully realized array, which promoted the commercialization of VOFET and showed great potential in flexible display, multifunctional sensors, and wearable integrated circuits.

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Citations

Feb 14, 2020·Nature Communications·Ali NawazCarlos C Bof Bufon
Dec 31, 2020·ACS Applied Materials & Interfaces·Qizhen ChenTailiang Guo
Sep 24, 2019·ACS Applied Materials & Interfaces·Qizhen ChenTailiang Guo
Oct 9, 2019·ACS Applied Materials & Interfaces·Masaya KondoTsuyoshi Sekitani
Jun 20, 2020·ACS Applied Materials & Interfaces·Shuqiong LanTailiang Guo

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