Nanosolar NanoCell 2.6 Watt Flexible CIGS Solar Cell. These are not like any other silicon cells. They are made of two sheets of aluminum. The rear sheet is one polarity and the front sheet is the opposite. These are connected with conductive glue.
Nanosolar used a type of aluminum foil and an ultrasonic spot welder. As they are made of aluminum to connect them you could use.
Tabbing wire or standard copper wire or you should use silver. Conductive glue or special aluminum flux to make a strong long lasting solder connection.
These Cells passed quality control but outputs may very slightly from stated specs. These are raw solar cells and will degrade if not encapsulated in weather tight enclosure. Go to the 3:25 mark.
Rated Power: 2.6 Watts. Length: 165mm (6.5 inches).
Width: 135mm (5.3 inches). Height: 0.4mm (0.02 inches). Lightweight Aluminum Structure CIGS Solar Cells which are Semi-Flexible. The item "NANOSOLAR NANOCELL 2.6 WATT Flexible CIGS Solar Cell. 6.5X5.3 inches" is in sale since Wednesday, July 15, 2015.This item is in the category "Home & Garden\Home Improvement\Electrical & Solar\Alternative & Solar Energy\Solar Panels". The seller is "directvoltage" and is located in Pratt, Kansas. This item can be shipped to United States, Canada.