In a photovoltaic device, an n‐type dopantA chemical element (impurity) added in small amounts to an..., such as phosphorus, that puts an additional electronAn elementary particle of an atom with a negative electrical... into an energy level very near the conduction band; this electronAn elementary particle of an atom with a negative electrical... is easily exited into the conduction band where it increases the electrical conductivity over that of an undoped semiconductor.
