Wang Zhengliang, Li Tong, Li Jing, Ye Yanqing, Zhou Qiang, Jiang Long, Tang Huaijun
Key Laboratory of Advanced Synthetic Chemistry (Yunnan Minzu University) of State Ethnic Affairs Commission, Key Laboratory of Green-chemistry Materials in University of Yunnan Province, School of Chemistry & Environment, Yunnan Minzu University, Kunming, 650500, P. R. China.
Instrumental Analysis & Research Center, Sun Yat-Sen (Zhongshan) University, Guangzhou, 510275, P. R. China.
Chem Commun (Camb). 2022 Apr 7;58(29):4596-4598. doi: 10.1039/d2cc00178k.
Luminescent crystals with high efficiency have huge potential in applications for white light-emitting diodes (LEDs). Herein, organic-inorganic hybrid crystals doped with Mn, [N(CH)]XF:Mn (X = Si, Ge, and Ti), were grown under mild conditions. Their crystal structural evolution was confirmed by single-crystal X-ray diffraction at different temperatures. These crystals exhibit intense red emission with a high external quantum efficiency (73.0% for [N(CH)]TiF:Mn) and good thermal stability. The warm white LEDs were fabricated by combining these red-emitting phosphors with a YAG:Ce ceramic chip. As-grown crystals can significantly optimize the performances of white LEDs (colour rendering index up to 95). Hence, this work provides a new strategy to explore Mn-activated organic-inorganic hybrid materials for white LEDs.
高效发光晶体在白光发光二极管（LED）应用中具有巨大潜力。在此，在温和条件下生长了掺杂Mn的有机-无机杂化晶体，即[N(CH)]XF:Mn（X = Si、Ge和Ti）。通过不同温度下的单晶X射线衍射证实了它们的晶体结构演变。这些晶体呈现出强烈的红色发射，具有高的外量子效率（[N(CH)]TiF:Mn为73.0%）和良好的热稳定性。通过将这些发红光的磷光体与YAG:Ce陶瓷芯片相结合制备了暖白光LED。生长出的晶体能够显著优化白光LED的性能（显色指数高达95）。因此，这项工作为探索用于白光LED的Mn激活有机-无机杂化材料提供了一种新策略。
