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Halogen‐Acupuncture Stabilization of Pure‐Iodide Wide‐Bandgap Perovskites for Efficient and Stable Solar Cells under Simulated Low‐Earth‐Orbit Cycling

ABSTRACT Pure‐iodide wide‐bandgap (WBG) perovskites are promising top‐cell absorbers for tandem photovoltaics, benefiting from their intrinsic immunity to the halide phase segregation that plagues mixed‐halide counterparts. However, their practical deployment, particularly in spa...