Study of electrically conductive adhesives in the manufacture of photovoltaic modules

Abstract

In this work, the behavior of an electrically conductive adhesive (ECAs) was selected and studied, using shingled technology is a development in the connection of solar cells by means of superimposition with electrically conductive adhesives, thus obtaining higher powers than the previous welding process, also offers several advantages compared to standard photovoltaic modules, improving: efficiency, reduction of microcracks, better use of the surface, lower processing temperature, higher energy yield, and better aesthetics. The objective of this study was to analyze electrically conductive adhesives for use in the manufacture of photovoltaic modules to propose a technological development to obtain greater efficiency in energy capture. Polycrystalline cells and monocrystalline cells were studied. The photovoltaic module manufacturing set was made using the conventional fixing method to join solar cells, based on the union by welding with Sn-Cu connection tapes. Loctite Ablestik ICP 8282 adhesive was selected for use in the manufacture of the overlay prototype and the substitution of the welding process in the manufacture of standardized photovoltaic modules. The adhesive curing consisted of depositing the joined cells, in the Stringer equipment, for 30 seconds at a temperature of 150°C.