Contacting technology for thin film CdTe photovoltaic modules

Improvement of a reliable contacting metallurgy is the present key issue for the successful exploitation of CdTe photovoltaic modules. Many contacting schemes have been proposed to overcome this bottleneck: however, each proposition has its own limitation. Moreover, thermodynamic stability is the real question for a contacting metallurgy. A technology is described which is not only thermodynamically stable but also low cost. The method of deposition is simple with a high throughput and can be adopted for large scale commercial applications. To the best of our knowledge using this contacting technology this is the first time a high value of J_sc has been obtained from large area devices