Chinese researchers build kesterite solar cell with certified efficiency of 14.2%

The solar cell was treated with multi-elemental alloying, which reportedly helped eliminate defects in the kesterite absorber, thus increasing cell efficiency. China's National PV Industry Measurement and Testing Center confimed the results. A group of researchers led by the Chinese Academy of Sciences (CAS) has fabricated a kesterite (CZTSSe) solar cell that achieved a maximum power conversion efficiency of 14. 6% and a certified efficiency of 14. 2%. "The performance of kesterite solar cells is mainly limited by the defect-induced charge loss," the research's corresponding author, Qingbo Meng, ...

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