Solar holography

摘要

A solar photovoltaic energy collection system using a reflection hologram is described herein. The system uses a single-axis tracking system in conjunction with a spectral-splitting holographic element. The hologram accurately focuses the desired regions of the solar spectrum to match the bandgaps of two or more different solar cells, while diverting unused infrared wavelengths away. Other applications for solar holography include daylighting and greenhouses.