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Researchers at Tallinn University of Technology (TalTech) have increased the efficiency of next-generation thin-film solar cells by partially substituting copper with silver in absorber material.
A thin-film solar cell consists of several thin layers of light-absorbing semiconductor materials. Silicon, which has traditionally been used in solar cells since the 1950s, requires fairly thick layering due to its low light-absorption.
Next-generation lightweight flexible monograin layer solar cell developed by TalTech researchers. Courtesy of Professor Jüri Krustok.
TalTech researchers are developing compound semiconductor materials named kesterites, which in addition to high absorption of light, contain earth-abundant and…