Design of semitransparent tantalum nitride photoanode for efficient and durable solar water splitting

Abstract

A semitransparent Ta 3 N 5 photoanode is designed for efficient and durable solar water splitting. The Ta 3 N 5 -CuInSe 2 tandem device exhibits an initial and stabilized solar-to-hydrogen efficiency of ∼9% (highest for metal oxides/nitrides) and 4%, respectively.