Electrical contact

摘要

A photovoltaic device with a low-resistance stable electrical back contact is disclosed. The photovoltaic device can have a CuTex or CuTexNy layer.

主权项

1. A method for manufacturing a photovoltaic module comprising:
forming a semiconductor absorber layer over a substrate, the semiconductor absorber layer comprising cadmium telluride; forming a low-resistance contact layer over the semiconductor absorber layer in which copper is bound in a chemically stable phase, the low-resistance contact layer comprising a copper telluride nitride with a formula of CuTexNy wherein x is in the range of 0.2 to 1 and y is less than 0.1; forming a diffusion barrier layer over the low-resistance contact layer; and forming a metal back contact layer over the diffusion barrier layer.