A PHOTOVOLTAIC CELL AND A METHOD OF FORMING A PHOTOVOLTAIC CELL

摘要

The present disclosure provides a photovoltaic device comprising a copper-based light-absorbing material. The copper-based light-absorbing material is formed on an intermediate carbon layer arranged to reduce the formation of voids at the rear of the device and reduce minority carrier. In some instances, the carbon layer is a graphene layer. Embodiments are also directed to a tandem photovoltaic device comprising a top cell, having a copper-based light-absorbing material, and a bottom cell having an absorber material with a bandgap lower than the copper-based light-absorbing material. The top and the bottom cells are interconnected by an intermediate carbon layer.