Solar Cells: Novel Silicon Nanohemisphere‐Array Solar Cells with Enhanced Performance (Small 22/2011)

A novel low-aspect-ratio Si nano- hemisphere array surface texturing is introduced to enhance the performance of Si thin-film solar cells, which show ahigher short-circuit current density thannanopillars. Simulation shows thatphotogenerated carriers are mainlyconcentrated within a thin layer on thenano-hemisphere array surface (the insetscheme is scaled to the size of a hemisphere) due to a strong light-absorbing effect. The demonstrated nano-hemispheres are highly compatible with and promising for Si thin-film-based solar cells.