Speaker
Description
Polarization-sensitive photodetectors have attracted increasing research interest due to many important applications like high-density optical signal processing, imaging, navigation, or high-contrast polarizers. Here we demonstrate a self-powered photodetector with the assistance of the lateral photovoltaic effect resulting from the formation of Schottky junctions in the semiconducting CrSBr and Au electrode interfaces. We have investigated the polarization-resolved and self-powered device performance under the excitation of laser wavelength $514$ nm. We also demonstrated a strongly position-sensitive photoresponse in the device. The observed highly polarization-sensitive response of the device originated from the polarization-sensitive light–matter interaction in CrSBr was confirmed by measuring polarization-dependent photocurrent, Raman spectra, and photoluminescence (PL). Our work provides a viable route to fabricate air-stable, self-powered, high-performance polarization-sensitive photodetectors based on 2D layered materials.
