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White light‐emitting diodes (WLEDs) are promising next‐generation solid‐state light sources. However, the commercialization route for WLED production suffers from challenges in terms of insufficient color‐rendering index (CRI), color instability, and incorporation of rare‐earth elements. Herein, a new two‐component strategy is developed by assembling two broadband emissive materials with self‐trapped...
The combination of yellow‐emissive CsCu2I3 and blue‐emissive Cs3Cu2I5 for environmentally friendly white LEDs is demonstrated by Zhifeng Shi, Lijun Zhang, Chongxin Shan, and co‐workers in article number 2001367. Both copper halides are highly stable against heat, ultraviolet light, and oxygen/moisture degradation, as is demonstrated, and they use this strategy to overcome photon self‐absorption, color...
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