Integral screen printed solar cells panel

Abstract

This paper summarizes our activities in the field of process technologies for the fabrication of photovoltaic devices. The study is strongly focused on the integral screen printing technique for the fabrication of single crystal solar cells, using standard equipments available in our laboratory. The challenging aim of this survey is to attain encouraging results with very modest means. Knowing that any problem coming unexpectedly with the cell structure may influence more than one electrical parameter and as the process consists on several steps; we will stop at each stage and discuss the factors, which affect it. In pursuit of this goal a doping phosphorus1, a back contact silver-aluminium2, a front side silver3 and an anti reflective coating4 commercial pastes are printed and fired. The 36 fully screen printed solar cells connected in series offer a module with power output of 31 Watts5 and 11 % as efficiency.