发光
荧光粉
材料科学
结晶
成核
圆极化
极化(电化学)
纳米技术
光电子学
化学工程
光学
化学
物理
物理化学
有机化学
工程类
微带线
作者
Li‐Zhe Feng,Jingjing Wang,Tao Ma,Yi‐Chen Yin,Kuang‐Hui Song,Zidu Li,Manman Zhou,Shan Jin,Tao‐Tao Zhuang,Fengjia Fan,Manzhou Zhu,Hong‐Bin Yao
标识
DOI:10.1038/s41467-022-30989-y
摘要
Abstract Hierarchically structured chiral luminescent materials hold promise for achieving efficient circularly polarized luminescence. However, a feasible chemical route to fabricate hierarchically structured chiral luminescent polycrystals is still elusive because of their complex structures and complicated formation process. We here report a biomimetic non-classical crystallization (BNCC) strategy for preparing efficient hierarchically structured chiral luminescent polycrystals using well-designed highly luminescent homochiral copper(I)-iodide hybrid clusters as basic units for non-classical crystallization. By monitoring the crystallization process, we unravel the BNCC mechanism, which involves crystal nucleation, nanoparticles aggregation, oriented attachment, and mesoscopic transformation processes. We finally obtain the circularly polarized phosphors with both high luminescent efficiency of 32% and high luminescent dissymmetry factor of 1.5 × 10 −2 , achieving the demonstration of a circularly polarized phosphor converted light emitting diode with a polarization degree of 1.84% at room temperature. Our designed BNCC strategy provides a simple, reliable, and large-scale synthetic route for preparing bright circularly polarized phosphors.
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