A Flexible and Wearable Photodetector Enabling Ultra-Broadband Imaging from Ultraviolet to Millimeter-Wave Regimes (Adv. Sci. 26/2024)

Abstract

Wearable Ultra-broadband Photodetectors

In article number 2401631, Huanjun Chen and colleagues present a flexible and wearable graphene photodetector capable of ultra-broadband and rapid photoresponse at room temperature. Remarkably, the detectable wavelength range of this device spans from ultraviolet to millimeter wave spectrum, making it the broadest among all two-dimensional flexible detectors reported to date. Under simulated human body-wearing conditions, the device enables wide-spectrum imaging of shielded objects and material differentiation. The straightforward device architecture, coupled with its ultra-broadband operational wavelength range, is expected to have significant implications for applications in electronic skin, environmental sensing, and portable consumer electronics.