CIGS solar cell based on ultrathin glass substrate achieves record efficiency of 17.81%

Korean researchers have fabricated a CIGS cell with a 90 µm-thick UTG provided by Korean specialist Unique Technology Integral. The device also utilizes a cadmium-free buffer layer made of zinc oxide and magnesium oxide, instead of commonly used cadmium sulfide. Scientists at the Korea Institute of Energy Research (KIER) have developed a copper, indium, gallium and diselenide (CIGS) solar cell with ultra-thin glass (UTG), an emerging substrate known for its exceptional flexibility and stability. "We achieved an impressive record device efficiency of over 17% for cadmium-free flexible solar cells ...

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