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首页> 外文期刊>Chemical Physics Letters >Single-layer organic light-emitting diode with 2.0% external quantum efficiency prepared by spin-coating
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Single-layer organic light-emitting diode with 2.0% external quantum efficiency prepared by spin-coating

机译:通过旋涂制备具有2.0%外部量子效率的单层有机发光二极管

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摘要

We present a highly efficient organic light-emitting diode with a single-layer structure and air-stable Al cathode. The device consists of a spin-coated thin film of polystyrene in which rubrene and Alq(3) molecules are dispersed. By optimizing the concentration of Alq(3) and rubrene, a maximum external quantum efficiency of 2.0% photons/electron and a current efficiency of 8.5 cd/A at 22 V could be achieved in the device. The high electroluminescence efficiency is attributed to a combination of energy transfer from Alq(3) to rubrene, and direct carrier trapping and recombination on rubrene, followed by an efficient fluorescent emission from rubrene. (C) 2000 Elsevier Science B.V. All rights reserved. [References: 21]
机译:我们提出了一种具有单层结构和空气稳定的铝阴极的高效有机发光二极管。该设备由旋涂的聚苯乙烯薄膜组成,其中分散有红荧烯和Alq(3)分子。通过优化Alq(3)和红荧烯的浓度,可在器件中实现2.0%光子/电子的最大外部量子效率和22伏时的电流效率8.5 cd / A。高电致发光效率归因于能量从Alq(3)转移至红荧烯的结合,以及直接的载流子俘获和在红荧烯上的重组,然后是红荧烯的有效荧光发射。 (C)2000 Elsevier Science B.V.保留所有权利。 [参考:21]

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