Regulated self-powered photoresponse properties and irradiance-adaptable behavior in ferroelectric SrTiO3/TiO2 heterojunction photodetectors

SrTiO 3 /TiO 2 core–shell nanorod arrays were synthesized using a simple two-step hydrothermal method, and a self-powered irradiation-adaptive photodetector controlled by a ferroelectric depolarization field was designed.