An innovative process suitable to produce high-efficiency CdTe/CdS thin-film modules

A novel process, different in all steps from the common process usually used to fabricate CdTe/CdS thin-film solar cells, is described. This process on the one hand permits one to obtain high-quality layers and high-quality cells and on the other hand is particularly suitable to be scaled up at an industrial level. In fact, neither etching baths nor CdCl 2 deposition is used in this process. The back contact is made with a buffer layer capable of stabilizing Cu and, as a consequence, the devices are very stable.