Novel Silicon Nanohemisphere‐Array Solar Cells with Enhanced Performance

Abstract

Low-aspect-ratio Si nanohemisphere-array surface texturing applicable to ultrathin-film solar cells is introduced to improve cell performance. Besides the excellent light confinement, the low-aspect-ratio characteristic of the Si nanohemispheres facilitates the formation of high-quality p–n junctions and electrical contacts, relative to their high-aspect-ratio counterparts such as Si nanowires.