Graded Alloy Telluride Layer In Cadmium Telluride Thin Film Photovoltaic Devices And Methods Of Manufacturing The Same

摘要

Cadmium telluride thin film photovoltaic devices 10 are generally disclosed including a graded alloy telluride layer 22. The device can include a cadmium sulfide layer 18, a graded alloy telluride layer 22 on the cadmium sulfide layer 18, and a back contact 24 on the graded alloy telluride layer 22. The graded alloy telluride layer 22 generally has an increasing alloy concentration and decreasing cadmium concentration extending in a direction from the cadmium sulfide layer 18 towards the back contact layer 24. The device 10 may also include a cadmium telluride layer 20 between the cadmium sulfide layer 18 and the graded alloy telluride layer 22. Methods are also generally disclosed for manufacturing a cadmium telluride based thin film photovoltaic device having a graded cadmium telluride structure.