Converting Residual Unstable PbI2 into Robust 2D Perovskite via Spacer Cation Engineering Toward Operationally Stable Perovskite Solar Cells
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Addressing light instability challenges induced by residual PbI2 is essential for simultaneously achieving high power conversion efficiency and excellent stability. Herein, we report an effective management strategy of residual photoactive PbI2 based on dimens... ...