Journal
ACS APPLIED MATERIALS & INTERFACES
Volume 10, Issue 36, Pages 30587-30595Publisher
AMER CHEMICAL SOC
DOI: 10.1021/acsami.8b06625
Keywords
organic transistor; vertical transistor; inkjet printing; photodetector; image sensor
Funding
- National Key Research and Development Program of China [2016YFB0401103]
- National Natural Science Foundation of China [51503039]
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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 ANIOLED 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 photo detector 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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