Perovskite-perovskite-silicon tandem solar cell achieves record-breaking efficiency of 27.1%

Researchers in Singapore have built a triple junction tandem solar cell with an ultrawide-bandgap perovskite absorber integrating cyanate (OCN) ions. The cell surpassed the power conversion efficiencies previously reported for all other perovskite-based triple-junction tandems, as well as single-junction perovskite and silicon solar cells. A research group at the National University of Singapore (NUS) has fabricated a triple-junction perovskite-perovskite-silicon solar cell that integrates cyanate (OCN) ions in an ultrawide-bandgap (UWBG) perovskite absorber. "The incorporation of OCN ions significantly ...

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