Buffer layer for high performing and low light degraded solar cells

摘要

Methods for forming a photovoltaic device include forming a buffer layer between a transparent electrode and a p-type layer. The buffer layer includes a doped germanium-free silicon base material. The buffer layer has a work function that falls within barrier energies of the transparent electrode and the p-type layer. An intrinsic layer and an n-type layer are formed on the p-type layer. Devices are also provided.