Kesterite tech news
JinkoSolar Holding Co., Ltd. (NYSE: JKS) announced on July 8, 2026, the achievement of a new efficiency record for large--area Kesterite (CZTS) modules. Utilizing a proprietary "Antimony--Doping" process to control grain growth and minimize deep--level defects, the company's "Tiger K" prototype reached a certified total--area efficiency of 16.4%. JinkoSolar stated that this advancement positions Kesterite as a viable, cadmium--free alternative for the utility--scale market, leveraging existing high--speed production lines with minimal retooling.