HYBRID DIELECTRIC - METALLIC BACK SURFACE REFLECTOR FOR PHOTOVOLTAIC APPLICATIONS

摘要

A photovoltaic device includes a photovoltaic layer configured to convert light into electrical power, a distributed Bragg reflector (DBR) layer having one to three periods disposed adjacent the photovoltaic layer, a metal layer, disposed adjacent the DBR layer, configured to reflect light passed through the photovoltaic layer to the DBR layer, and a phase matching layer disposed between the metal layer and the DBR layer, the phase matching layer configured to match a phase between the DBR layer and the metal layer over a selected wavelength band. The metal layer has a non-uniformed textured surface facing the phase matching layer. The photovoltaic device further includes an anti-reflection coating layer disposed on a top surface of the photovoltaic layer, and a substrate on which the metal layer is disposed. The substrate may be textured on a surface facing the metal layer.