On Dec 22, 9:00*pm, Brian Whatcott wrote:
....
Solar panels are often made with soldered copper tape busses.
So copper tape and solder would be one way to go.
There is a siver loaded epoxy that can do reasonably well in thin
layers. It's expensive, naturally.

BrianW

Right. The tapes on these panels are either well "tinned" or silver.
I presume the former. From the lens side I can't see any solder but
that doesn't really mean anything. If the foil is tinned maybe just
touching it with an iron would make a join...

--Tom.