Chemistry and preparation of InP/CdS solar cells

The p-InP/n-CdS heterodiode has reached Air Mass 2 solar conversion efficiencies of 15.0% in single crystal and 5.7% in polycrystalline thin film form. After a brief description of the physical principles of this solar cell we give an account of its preparation and characterization. Key results are included on photocurrent, photovoltage, quantum efficiency, as well as on stability and operation at high temperature.