Photovoltaic Device Including a Back Contact and Method of Manufacturing

摘要

A photovoltaic device includes a substrate, a transparent conductive oxide, an n-type window layer, a p-type absorber layer and an electron reflector layer. The electron reflector layer may include zinc telluride doped with copper telluride, zinc telluride alloyed with copper telluride, or a bilayer of multiple layers containing zinc, copper, cadmium and tellurium in various compositions. A process for manufacturing a photovoltaic device includes forming a layer over a substrate by at least one of sputtering, evaporation deposition, CVD, chemical bath deposition process, and vapor transport deposition process. The process includes forming an electron reflector layer over a p-type absorber layer.

主权项

1. A photovoltaic structure comprising:
a substrate structure including a base layer, a transparent conductive oxide layer, at least one semiconductor layer; and an electron reflector layer provided over the substrate structure, wherein the electron reflector layer comprises zinc, tellurium, and copper.