Photovoltaic back contact

摘要

A method to preparing Cadmium telluride surface before forming metal back contact is disclosed. The method can include removing carbon from Cadmium telluride surface.

主权项

1. A method of manufacturing a photovoltaic device comprising the steps of: forming a transparent conductive oxide layer adjacent to a substrate; forming a semiconductor window layer adjacent to the transparent conductive oxide layer; forming a semiconductor absorber layer adjacent to the semiconductor window layer, wherein the semiconductor absorber layer comprises cadmium telluride and a carbon-containing material; contacting a cleaning agent to the carbon-containing material, thereby removing a portion of the carbon-containing material from the cadmium telluride layer; and forming a back contact layer adjacent to the absorber layer surface.