http://www.w3.org/ns/prov#value | - Rh), ruthenium (Ru), and an alloy including at least one of these metals; and a first thin-film metal layer, comprising at least one of cobalt (Co), nickel (Ni), and an alloy including at least one of these metals, formed between said p-type semiconductor layer and said first positive electrode layer, wherein said substrate transmits said light reflected from said positive electrode, and light is
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