Indium Corporation - Soldering Photovoltaic Cells

Our thanks to Authored by Karl Pfluke. for allowing us to reprint the following.


Increasingly, electronics manufacturing services (EMS) providers specializing in SMT are seeking to diversify and fill capacity. Photovoltaic (PV) solar cell module assembly is becoming a popular choice to meet those goals. PV cell stringing in solar module assembly is achieved using many common SMT materials and processes. Solders, fluxes, and common reflow technologies produce electrical interconnects in both a-Si and c-Si photovoltaic technology


The increasing demand for clean energy has caused photovoltaic (PV) module production to nearly double, year on year, in recent times. There are four types of PV modules being produced: copper-i ndiu m-galliu m-selen iu m (CIGS), cadmium-telluride (CdTe), amorphous silicon (a-Si), and silicon (Si). CIGS, CdTe, and a-Si are the newest photovoltaic assembly technologies. CIGS is the most promising in terms of reliability (lifecycle), efficiency, and cost. Numerous start-up companies in the U.S., and established companies in Europe, have embraced this technology. CdTe is a proven solution for costeffective thin-film PV technology and has been on the market for years. Modules made using this material deliver power for as little as $.80/W. a-Si is a noncrystalline silicon technology made using chemical vapor deposition (CVD) to layer optical coatings over a large area at low temperatures...


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