Full‐flexible Intelligent Thermal Touch Panel Based on Intrinsically Plastic Ag 2 S Semiconductor

Wearable touch panel, a typical flexible electronic device, can recognize and feedback the information of finger touch and movement. Excellent wearable touch panels are required to accurately and quickly monitor the signals of finger movement as well as the capacity of bearing various deformation. High-performance thermistor materials are one of the key functional components, but to date, a long-standing bottleneck is that inorganic semiconductors are typically brittle while the electrical properties of organic semiconductors are quite low. Herein, we report a high-performance flexible temperature sensor by using plastic Ag2S with ultrahigh temperature coefficient of resistance of -4.7%/K and resolution of 0.05 K, and rapid response/recovery time of 0.11/0.11 s. Moreover, the temperature sensor shows excellent durability without performance damage or lose during force stimuli tests. In addition, full-flexible intelligent touch panel composed of 16×10 Ag2S film-based temperature sensor array, as well as flexible printed circuit board and deep learning algorithm is designed for perceive finger touch signals in real-time and intelligent feedback Chinese characters and letters on App. These results strongly show that high-performance flexible inorganic semiconductors can be widely used in flexible electronics. This article is protected by copyright. All rights reserved