Disclosed is a solar cell or component thereof that includes a p-type thin film solar light absorbing layer having one or more compositions of group II-VI alloys described as CdTe.sub.xM.sub.1-x, where M is S, Se or O. An n-type thin-film transparent window layer comprising CdS is provided adjacent to the CdTe.sub.xM.sub.i-x p-type thin film solar light absorbing layer such that a p-n junction formed between the layers.
STATEMENT OF GOVERNMENTAL INTEREST
 The invention described and claimed herein was made in part utilizing funds supplied by the U.S. Department of Energy under Contract No. DE-AC02-05CH11231. The government has certain rights in this invention.