Performance and Properties of CdTe Electrodeposited from Phosphine Telluride Solution

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Abstract
Photovoltaic cells (PVC) have been fabricated using thin film that has been deposited by a new electrochemical reduction process involving a nonaqueous solution of tri‐n‐butylphosphine telluride and cadmium ion. Because the current decreases to a very low value as the deposition progresses in the dark, illumination has been employed to maintain the deposition current at higher levels during the reduction. The PVC has the configuration: , and it appears that the barrier occurs at the interface. Light‐to‐electric power conversion efficiencies as high as 5.2% have been achieved thus far over small surface areas. By means of absorption measurements, the bandgap of the film has been determined to be 1.44 eV.

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