Multifunctional Ionic‐Ligand Regulated High‐Quality γ‐CsPbI3 Thin Films for Efficient and Bright Deep‐Red Light‐Emitting Diodes
Xue‐Chen Ru,
Bai‐Sheng Zhu,
Zhen‐Yu Ma
et al.
Abstract:All‐inorganic CsPbI3 perovskite semiconductor is attractive for deep‐red light‐emitting diodes (LEDs) because of its high photoluminescence, good thermal stability, excellent charge transport, and solution processability. However, the metastable phase of optically active CsPbI3 hinders the fabrication of efficient and bright deep‐red LEDs. Herein, a multifunctional ionic ligand regulation strategy using (2‐hydroxy‐5‐methylphenyl) triphenyl‐phosphonium iodide and 3‐(N, N‐dimethyloctylammonio) propanesulfonate i… Show more
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