氢氧化物
材料科学
发光
钝化
量子点
锚固
热稳定性
成核
量子产额
钙钛矿(结构)
荧光粉
化学工程
光电子学
纳米技术
化学
图层(电子)
光学
有机化学
工程类
物理
荧光
结构工程
作者
Pengfei Ma,Yixin Hou,Ziyu Chen,Jun Su,Luying Li,Nishuang Liu,Zhi Zhang,Xueliang Jiang,Fei Long,Yanan Ma,Yihua Gao
标识
DOI:10.1016/j.cej.2021.130471
摘要
The poor stability of all-inorganic perovskite quantum dots (QDs) limits its application in the field of optoelectronics although it possesses prominent luminescent properties. Herein, we proposed a selective nucleation-growth strategy through anchoring the CsPbBr3 QDs on the aminated hierarchical three-dimensional layered double hydroxide (A3D-LDH). The strong interaction between the amino group and Pb2+ endows the anchoring effect of A3D-LDH. Coordinated with the isolation effect of flower-like structure, the A3D-LDH/CsPbBr3 composites exhibited high solid photo-luminescence quantum yield (82.35%) and enhanced stability against the adverse environment (humidity air, irradiation, and heat), which is attributed to restricted aggregation and surface passivation of CsPbBr3 QDs. Benefiting from the advantageous properties, an efficient white light-emitting diode (LED) is fabricated by introducing A3D-LDH/CsPbBr3 composites as green phosphors with color coordinates (0.349, 0.349) at a correlated color temperature of 4841 K. We believe that our method offered a promising candidate for solid-state lighting and display.
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