The thin layer of metal foil that originally covered the vessels imparted a luminous sheen, still discernible today in traces.
WSJ: The Craft Collector | One Man's Search for Ancient China | Sackler Gallery | By Lee Rosenbaum
Depositing the CIGS materials evenly on glass or metal foil is a lot harder than it sounds, and figuring out a way to mass produce thin films is another big challenge.
FORBES: SoloPower To Start Flexible Thin Film Solar Production in Oregon
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