Improved Light Management in Silicon Heterojunction Solar Cells by Application of a ZnO Nanorod Antireflective Layer

The ZnO nanorod layers were grown by electrochemical deposition, which is a low-cost and industrially applicable method, since no vacuum conditions and high temperatures are required. Therefore, this concept could be a promising process step in the photovoltaic industry to improve light management in silicon heterojunction solar cells with AZO front contacts, especially attractive for the production utilizing very thin wafers, where wafer texturing for antireflection purposes shows important drawbacks.