Found this elsewhere but I don't have link to the original source 'GE Solar NEWS':"A big problem in the thin-film space is that these things start to age over time and moisture starts to creep in"
SER How flooding did Strategic Energy Resources a favour: Four holes down in 'redesigned' gold & copper campaign
CC9 Chariot locks in high-potential drill target at Black Mountain, one of the USA's largest lithium landholdings