High efficiency CdS/CdTe solar cells from solution-grown CdS films

Abstract

Adherent thin films of CdS were deposited on glass and SnO/sub 2/:F/glass substrates from an aqueous solution, and the important process parameters were investigated. The deposited films show high optical transmission at sub-bandgap wavelengths and high photoconductivity ratios. Thin-film CdS/CdTe solar cells have been prepared by depositing p-CdTe films onto CdS-SnO/sub 2/:F/glass substrates by close-spaced sublimation. Junction photovoltage spectroscopy has been used for the qualitative comparison of junction characteristics. Solar cells of 1 cm/sup 2/ area with an AM 1.5 efficiency of higher than 13% are reported.< <ETX xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">&gt;</ETX>