First Solar, Inc.
LAYER STRUCTURES FOR PHOTOVOLTAIC DEVICES AND PHOTOVOLTAIC DEVICES INCLUDING THE SAME

Abstract:

A layer structure for a photovoltaic device comprising: a transparent conductive oxide layer comprising indium tin oxide (20); a layer of tin dioxide (30) adjacent to the indium tin oxide of the transparent conductive oxide layer; and a layer of zinc magnesium oxide (40) adjacent to the layer of tin dioxide, wherein the layer of zinc magnesium oxide is an alloy of zinc oxide and magnesium oxide. A photovoltaic device comprising: a transparent conductive oxide layer comprising indium tin oxide; a layer of tin dioxide disposed on the indium tin oxide of the transparent conductive oxide layer; a layer of zinc magnesium oxide adjacent to the layer of tin dioxide, wherein the layer of zinc magnesium oxide is an alloy of zinc oxide and magnesium oxide; and an absorber layer disposed on the layer of zinc magnesium oxide, wherein the absorber layer comprises cadmium, tellurium, selenium, or any combination thereof.