Tunable UV response and high performance of zinc stannate nanoparticle film photodetectors

Abstract

A robust, inexpensive, and scalable drop-casting process was successfully developed to fabricate highly efficient and robust UV photodetectors with uniform and continuous films of ZnSnO₃ and Zn₂SnO₄–SnO₂ nanoparticles for the first time. An extreme high responsivity of ∼0.5 A W⁻¹ at 5.0 V bias was achieved with good visible-light rejection.