PILOT PLANT FOR PRODUCTION OF PHOTOVOLTAIC MODULES WITH NATIONAL TECHNOLOGY

摘要

Pilot plant for the production of photovoltaic modules with national technology. The present invention provides a surface chemical cleaning process for textured crystalline silicon blades adapted from a standard chemical cleaning process called rca. In the process of the invention, chemical cleaning comprises an isotropic attack on cp4, followed by the immersion of the silicon slides in the rca-2 solution. The planar attack increases chemical gettering and does not alter the structure of the micropiramids, as the immersion time is controlled and short, preferably only 10 seconds. Among other technical advantages, the process of the invention provides at least 175% increase in the life span of minority carriers and a reduction in processing time of approximately 9 minutes.