Enhanced stability of CsPbBr3 Quantum Dots by anchoring on the hierarchical three-dimensional layered double hydroxide
Enhanced stability of CsPbBr3 Quantum Dots by anchoring on the hierarchical three-dimensional layered double hydroxide
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通过锚定在分层三维层状双氢氧化物上增强 CsPbBr3 量子点的稳定性
DOI:
10.1016/j.cej.2021.130471
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发表时间:
2021
期刊:
影响因子:
--
通讯作者:
Y.H. Gao
中科院分区:
文献类型:
--
作者:
P.F. Ma;Y.X. Hou;Z.Y. Chen;J. Su;L.Y. Li;N.S. Liu;Z. Zhang;X.L. Jiang;F. Long;Y.N. Ma;Y.H. Gao
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 CsPbBr3QDs 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/CsPbBr3composites 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 CsPbBr3QDs. Benefiting from the advantageous properties, an efficient white light-emitting diode (LED) is fabricated by introducing A3D-LDH/CsPbBr3composites 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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