Si/Cu_2O Nanowires Heterojunction as Effective Position-Sensitive Platform

摘要

Cu_2O nanowires (Nws) network-based heterojunction was observed to have a position-sensitive photovoltaic characteristic. Its amplitude of the photovoltage (V_(ph)) varied regularly with the position of incidence of the 532nm laser radiation onto the Cu_2O NWs surface. The V_(ph) of this platform varies with the light position described as ΔV_(ph)/Δx is approximate ～14 mV/mm. Besides, the photoresponse of this device is very stable. This position-sensitive platform is expected to serve as a convenient device as easily to be fabricated, high performing photodetector.