The Transparent Pn Junction of Cui/Sno2/Cu2o Core-Shell Orderly Nanoarrays Towards Photovoltaic Conversion Enhancement

Abstract

The CuI/SnO2/ZnO core-shell orderly nanoarrays transparent pn junction has been fabricated via a simple approach of hydrothermal-sputtering-iodize method. As revealed, the ternary CuI/SnO2/ZnO transparent pn junction (CuI/ZnO-SnO2-3) exhibits highly transmittance of ~80%, photovoltaic conversion enhancement of ~1.0×103 folds than intrinsic CuI/ZnO pn junction, stable output during 1800s and decent stability during 6 weeks’ continuous cycle, which is mainly attributed to that, the SnO2 shell transition layer with appropriate Fermi level, carrier injection and wide band gap, can optimize the carrier concentration-mobility kinetic equilibrium efficiently to achieve a higher transparent photovoltaic conversion. Additionally, the SnO2/ZnO core-shell orderly nanoarrays can provide carrier pathway, increase solar efficiency and physical stability.

Keywords: Transparency, Photovoltaic Conversion, Core-shell Orderly nanoarrays, Stability