A LIGHT COLLECTING DEVICE

摘要

Embodiments provide a light collecting device. The light collecting device may comprise a semiconductor nanowire array which comprises a plurality of semiconductor nanowires. The light collecting device may also comprise a supporting structure supporting the semiconductor nanowire array. Each semiconductor nanowire may be divided into a plurality of nanowire areas. The diameter of each semiconductor nanowire may change from nanowire area to nanowire area, however remains at least substantially constant within each of the nanowire areas.