Photovoltaic properties of n-CdS/p-CdTe heterojunctions prepared by spray pyrolysis

Abstract

Heterojunction solar cells of n‐CdS/p‐CdTe have been prepared by deposition of CdS films by spray pyrolysis on single‐crystal CdTe to produce solar efficiencies greater than 6% without optimization or correction for reflection loss. Cells prepared by this method therefore compare favorably with cells prepared by vacuum evaporation of CdS. In addition, the highest open‐circuit voltage (0.74 V) observed to date in an efficient n‐CdS/p‐CdTe solar cell has been produced by this fabrication process.