有机发光二极管
电致发光
发光
材料科学
猝灭(荧光)
量子产额
制作
金属有机骨架
二极管
多孔性
发光二极管
图层(电子)
化学工程
光电子学
荧光
纳米技术
吸附
化学
复合材料
有机化学
光学
病理
工程类
物理
替代医学
医学
作者
Vetiga Somjit,Chokchai Kaiyasuan,Phakawan Thinsoongnoen,Taweesak Pila,Vinich Promarak,Kanokwan Kongpatpanich
标识
DOI:10.1016/j.micromeso.2021.111452
摘要
Direct use of commercial luminescent dyes as an emissive layer for organic light-emitting diodes (OLEDs) has limitations due to aggregation-caused quenching (ACQ) effect of the dyes in solid state. Highly porous metal-organic frameworks (MOFs) have been employed as a host to prevent aggregation of dye molecules. A prototype Al-based MOF (MIL-100) was synthesized as a processable fluid gel and fabricated as thin film with sub-100 nm thickness for further encapsulation of ACQ dye. Luminescence of Coumarin 6 dye in MOF film was preserved in solid state with a quantum yield of 21.4%. The obtained composite film was directly used as an emissive layer for OLED fabrication. The device was turned on at low voltage of 4.4 V with the maximum electroluminescence and external quantum efficiency of 1.65 × 103 cd m−2 and 0.9%, respectively. This study shows the potential of using commercial ACQ dyes that are incorporated in porous platform as Emissive layer for OLED applications.
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