PREPARATION AND PROPERTIES OF CDS THIN-FILMS PREPARED ON COLD SUBSTRATE AS A WINDOW LAYER FOR SOLAR-CELLS

CdS films, usually, prepared on hot substrate at temperature range fro m 180 to 220 degrees C. The electrical properties of the films are dep endent on many parameters such as film thickness, deposition rate, fil m structure and substrate temperature. To control all these parameters to get film resistivity suitable for manufacturing solar cells, it ne eds a lot of precautions. CdS prepared on cold substrate could be the solution for this problem. Evaporation of CdS film at constant evapora tion rate, then annealed in open air up to 600 degrees C according to the film thickness. The resultant film have been studied. The properti es of the films were comparable to the films prepared by the other met hods with less control complexity. (C) 1998 Published by Elsevier Scie nce Ltd. All rights reserved.