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Blue‐Emitting Perovskite Films
In article number 2103169, Zhizhen Ye, Haiping He and co‐workers report a facile vapor anion exchange method that can easily introduce Cl atoms into Br‐based films and enables preparation of blue‐emitting perovskite films with excellent surface morphology and good spectral photo‐stability. Furthermore, optically pumped blue amplified spontaneous emission is realized...
Solution‐processed all‐inorganic CsPbX3 perovskites exhibit outstanding optoelectronic properties and are being considered as a promising optical gain medium, with impressive performance in the green and red region. However, the development of CsPbX3 for blue emission is still lagging far behind, owing to difficulties in thin films synthesis and spectral instability subject to light irradiation. Here,...
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