n-ZnO/p-Si 3D heterojunction solar cells in Si holey arrays

A wafer-scale, low-cost solar cell based on n-ZnO/p-Si 3D hetero-junction arrays on holey Si substrates has been fabricated. This device shows a power-conversion efficiency of 1.2% and high photosensitivity. The present n-ZnO/p-Si heterojunction architectures are envisaged as potentially valuable candidates for next-generation photovoltaics.