Kesterite tech news
Canadian Solar Inc. (NASDAQ: CSIQ) announced on June 1, 2026, the commercial launch of its "TopBiHiKu--K" bifacial module, which integrates a Kesterite (CZTS) thin--film layer into its N--type TOPCon cell architecture. This hybrid design achieves a certified module efficiency of 23.5% and a power output of 720W. The Kesterite layer is specifically engineered to improve spectral response in the 350--450nm range, enhancing performance in low--light and diffuse conditions. This product launch marks a strategic shift toward "earth--abundant" manufacturing, significantly reducing the company's reliance on silver and indium in its high--efficiency product lines.