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Donor‐acceptor (D–A•) type luminescent organic radicals have received widespread attention as efficient doublet emitters. However, their generally low photoluminescence quantum efficiency (PLQE) and limited photostability restrict their various applications. Since unraveling the relationship between structure and properties of D–A• type luminescent radicals remains a challenge, here, a series of tri(2,4,6‐trichlorophenyl)methyl...
Although there is extensive attention to the eminent perovskite solar cells, the deep‐level defects such as Pb‐Pb dimers in the solution‐processed polycrystalline perovskites inevitably result in photovoltaic output losses and subsequent degradation. Recently, it is reported that an electron‐donating group can passivate Pb dimer defects efficiently. However, the mechanism for the causation of metallic...
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