2023 Academia Sinica Open House

With the increasing demand for wearable electronics, wearable real-time health monitoring sensors critically necessitate alternative power supply strategies because these devices generally suffer from frequent charging, periodic degradation, and replacement. Here, we have developed a multifunctional device using SnSe2/graphene heterojunctions to enable a novel self-powered strain sensor. Integrating two 2D materials yields several unexpected synergistic effects toward realizing an ultrasensitive, high thermoelectric performance device. In addition, its simplicity, atomic thinness, and transparency can be applied in battery-free wearable electronics and structural health monitoring.