Semi-transparent all-oxide ultraviolet light-emitting diodes based on ZnO/NiO-core/shell nanowires

Semi-transparent all-oxide light-emitting diodes based on ZnO/NiO-core/shell nanowire structures were prepared on doublepolished c-Al2O3 substrates. The entire heterojunction diode showed an average transparency of similar to 65% in the ultraviolet and visible regions. Under forward bias, the diode displayed an intense ultraviolet emission at similar to 382 nm, and its electroluminescence performance was remarkable in terms of a low emission onset, acceptable operating stability, and the ability to optically excite emissive semiconductor nanoparticle chromophores.