Journal
IEEE TRANSACTIONS ON ELECTRON DEVICES
Volume 66, Issue 7, Pages 3139-3143Publisher
IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
DOI: 10.1109/TED.2019.2914353
Keywords
Charged object detection; flexible electronics; organic sensor; rubrene single crystal
Funding
- National Natural Science Foundation of China [61574032, 51703020, 51732003, 51322305]
- Fundamental Research Funds for the Central Universities [2412017QD008]
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An ultrasensitive flexible organic sensor that uses the microsized rubrene crystal as the sensing element is demonstrated. The organic sensor with facile two-terminal device configuration can accurately perceive external charged objects, such as human hair, fiber cloth, plastic sheet, and paper scrap. The touch of these charged objects causes the effect of gate voltage of the traditional field-effect transistor, which modulates the carrier transport characteristics in the rubrene crystal. Benefiting from the unique sensing mechanism, the organic sensor is capable to resist the effect of gravity with high orientation stability. Our sensor shows a feasible route to realize the charged objects perception, making it a promising candidate for possible applications in artificial intelligence and human-machine interactive.
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