Effect of thermal treatments on the properties of CuxS films obtained by evaporation

✍ Scribed by F. Arjona; E. García-Camarero; R. Duo; E. Fatas

• Publisher: Elsevier Science
• Year: 1983
• Tongue: English
• Weight: 284 KB
• Volume: 9
• Category: Article
• ISSN: 0378-7753
• DOI: 10.1016/0378-7753(83)87013-x

✦ Synopsis

It has been observed that Cu,S films with a high sulphur content (X < 1.9) transform into the chalcocite phase (3~ > 1.99) after undergoing thermal treatment at 170 "c under vacuum, following evaporation of a thin copper film of 80 -120 A thickness. Similar treatments in an oxygen atmosphere, or in air (for longer than 5 min) do not result in such high stoichiometries.

It was also observed that the evaporation of a thin (-80 8) copper film on Cu,S, followed by the same thermal treatment under vacuum, noticeably improves the Cu,S/CdS heterojunctions due to a rise in the fill factor.