> The plug was an alloy of zinc and antimony – which we now know is a semiconductor. It was alternately capped by German silver (a nickel, copper, and zinc allo

> The plug was an alloy of zinc and antimony – which we now know is a semiconductor. It was alternately capped by German silver (a nickel, copper, and zinc alloy) and copper on opposite ends. While the design may be possible to make and repair in artisanal manner, it uses a lot of antimony and any repairs would likely shed more Sb than there is Cd in an entire CIGS panel (though In and Ga may be a concern). If the design was resource-optimized, it would still have a potent monk-killer (Sb) and then it wouldn't be worth it to recycle all of the panels.