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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...
Ion migration and phase segregation, in mixed‐cation/anion perovskite materials, raises a bottleneck for its stability improvement in solar cells operation. Here, the synergetic effect of electric field and illumination on the phase segregation of Cs0.05FA0.80MA0.15Pb(I0.85Br0.15)3 (CsFAMA) perovskite is demonstrated. CsFAMA perovskite with a CsPbBr3‐clusters passivated structure is realized, in which...
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