Indian scientists design lead-free perovskite solar cell with 23.61% efficiency

Developed through bandgap engineering and material design, the proposed PV device relies on a tin-based perovskite material known as CsSnI3-xBrx. It can reportedly be further designed to achieve power conversion efficiencies exceeding 24%. Researchers from Chiktara University in India claim to have succeeded in improving the stability and performance of organic-inorganic perovskite solar cells by applying a strategy called bandgap grading. It consists of enabling the cell perovskite absorber to collect a wider range of light photons by modifying its thickness and characteristics. "Our study demonstrates ...

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