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All‐inorganic CsPbBr3 perovskite quantum dots (PQDs) exhibit excellent photoelectric properties and application prospects in the field of light‐emitting diodes (LEDs) and display devices. However, these possess poor long‐term stability to UV irradiation, water, heat, and oxygen. Using polymethyl methacrylate (PMMA) as the matrix along with CH3(CH2)16COOCs, [CH3(CH2)16COO]2Pb, and KBr as the perovskite...
The power conversion efficiency of organic–inorganic hybrid perovskite solar cells has increased rapidly, but the device stability remains a big challenge. Previous studies show the grain boundary (GB) can facilitate ion migration and initiate device degradation. Herein, methimazole (MMI) is employed for the first time to construct a surface “patch” by in situ converting residual PbI2 at GBs. The...
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