Abstract
The stability of thin-film CdS/CdTe solar cells with evaporated Au–Cu2Te contacts to the CdTe film has been investigated. A decrease in conversion efficiency due to an increase in series resistance was observed in the solar cells stored in air at room temperature for 120 days. The increase in series resistance is caused by an increase in contact resistance resulting from the compositional change in the Au–Cu2Te contact to the CdTe film.
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