Concentrated photovoltaics stepped planar light guide

Abstract

This work presents a planar optical light guide design for concentrating solar power onto a photovoltaic cell. The design allows concentrated light injected into the guide to avoid interaction with other injection facets. The presented design has a HFOV of 1°, geometrical concentration of 112.5x at the output of the guide, and can achieve greater than 500x with secondary concentration.