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In today's module production the interconnection of the solar cells is done by leaded soldering. Electrically conductive adhesives are a promising alternative to standard soldering as they are lead-free and enable a gentle interconnection[1]. The low-stress interconnection is required for recent cell improvements such as finer contact structures, fragile cells and cells with all contacts on the rear...
Soldering is the most common way to interconnect solar cells into strings to form a PV module. The most prevalent and standard solder material is the SnPbAg-solder. Since lead is a hazardous material and the RoHS-guideline is expected to prohibit its further use in PV, the industry is looking for an alternative. In electronics there are a number of different alloy options. Promising candidates are...
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