"For example, the inner coat 30 may comprise: a first inner layer (deposited directly over the transparent base layer 20) comprising an alloy or mixture of zinc oxide, such as an alloy or mixture of zinc oxide and bismuth oxide, tin oxide, or indium oxide, at a thickness of about 65 ???; and a second inner layer (deposited over the first inner layer) comprising an oxide of zinc alone at a thickness" . . . .