Highly Efficient White Organic Light-Emitting Diodes with Controllable Excitons Behavior by a Mixed Interlayer between Fluorescence Blue and Phosphorescence Yellow-Emitting Layers

Highly Efficient White Organic Light-Emitting Diodes with Controllable Excitons Behavior by a Mixed Interlayer between Fluorescence Blue and Phosphorescence Yellow-Emitting Layers

A highly efficient hybrid white organic light-emitting diode (HWOLED) has been demonstrated with a mixed interlayer between fluorescent blue and phosphorescent yellow-emitting layers. The device structure is simplified by using a controllable fluorescence-mixed interlayer-phosphorescence emission la...

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Main Authors: Chun-Hong Gao, Xiao-Bo Shi, Dong-Ying Zhou, Lei Zhang, Zhao-Kui Wang, Liang-Sheng Liao
Format: Article
Language:English
Published: Hindawi Limited 2013-01-01
Series:International Journal of Photoenergy
Online Access:http://dx.doi.org/10.1155/2013/831765
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spelling doaj-add05c199d0845139c4e9f5af9279a472020-11-24T22:29:39ZengHindawi LimitedInternational Journal of Photoenergy1110-662X1687-529X2013-01-01201310.1155/2013/831765831765Highly Efficient White Organic Light-Emitting Diodes with Controllable Excitons Behavior by a Mixed Interlayer between Fluorescence Blue and Phosphorescence Yellow-Emitting LayersChun-Hong Gao0Xiao-Bo Shi1Dong-Ying Zhou2Lei Zhang3Zhao-Kui Wang4Liang-Sheng Liao5Jiangsu Key Laboratory for Carbon-Based Functional Materials & Devices, Institute of Functional Nano & Soft Materials (FUNSOM), Soochow University, Suzhou, Jiangsu 215123, ChinaJiangsu Key Laboratory for Carbon-Based Functional Materials & Devices, Institute of Functional Nano & Soft Materials (FUNSOM), Soochow University, Suzhou, Jiangsu 215123, ChinaJiangsu Key Laboratory for Carbon-Based Functional Materials & Devices, Institute of Functional Nano & Soft Materials (FUNSOM), Soochow University, Suzhou, Jiangsu 215123, ChinaJiangsu Key Laboratory for Carbon-Based Functional Materials & Devices, Institute of Functional Nano & Soft Materials (FUNSOM), Soochow University, Suzhou, Jiangsu 215123, ChinaJiangsu Key Laboratory for Carbon-Based Functional Materials & Devices, Institute of Functional Nano & Soft Materials (FUNSOM), Soochow University, Suzhou, Jiangsu 215123, ChinaJiangsu Key Laboratory for Carbon-Based Functional Materials & Devices, Institute of Functional Nano & Soft Materials (FUNSOM), Soochow University, Suzhou, Jiangsu 215123, ChinaA highly efficient hybrid white organic light-emitting diode (HWOLED) has been demonstrated with a mixed interlayer between fluorescent blue and phosphorescent yellow-emitting layers. The device structure is simplified by using a controllable fluorescence-mixed interlayer-phosphorescence emission layer structure. The electroluminance (EL) performance can be modulated easily by adjusting the ratio of the hole-predominated material to the electron-predominated material in the interlayer. It is found that the HWOLED with a ratio of 3 : 2 exhibits a current efficiency of 34 cd/A and a power efficiency of 29 lm/W at 1000 cd/m2 with warm white Commission Internationale de l’Eclairage (CIE1931) coordinates of (0.4273, 0.4439). The improved efficiency and adaptive CIE coordinates are attributed to the controllable mixed interlayer with enhanced charge carrier transport, optimized excitons distribution, and improved harvestings of singlet and triplet excitons.http://dx.doi.org/10.1155/2013/831765
collection DOAJ
language English
format Article
sources DOAJ
author Chun-Hong Gao
Xiao-Bo Shi
Dong-Ying Zhou
Lei Zhang
Zhao-Kui Wang
Liang-Sheng Liao
spellingShingle Chun-Hong Gao
Xiao-Bo Shi
Dong-Ying Zhou
Lei Zhang
Zhao-Kui Wang
Liang-Sheng Liao
Highly Efficient White Organic Light-Emitting Diodes with Controllable Excitons Behavior by a Mixed Interlayer between Fluorescence Blue and Phosphorescence Yellow-Emitting Layers
International Journal of Photoenergy
author_facet Chun-Hong Gao
Xiao-Bo Shi
Dong-Ying Zhou
Lei Zhang
Zhao-Kui Wang
Liang-Sheng Liao
author_sort Chun-Hong Gao
title Highly Efficient White Organic Light-Emitting Diodes with Controllable Excitons Behavior by a Mixed Interlayer between Fluorescence Blue and Phosphorescence Yellow-Emitting Layers
title_short Highly Efficient White Organic Light-Emitting Diodes with Controllable Excitons Behavior by a Mixed Interlayer between Fluorescence Blue and Phosphorescence Yellow-Emitting Layers
title_full Highly Efficient White Organic Light-Emitting Diodes with Controllable Excitons Behavior by a Mixed Interlayer between Fluorescence Blue and Phosphorescence Yellow-Emitting Layers
title_fullStr Highly Efficient White Organic Light-Emitting Diodes with Controllable Excitons Behavior by a Mixed Interlayer between Fluorescence Blue and Phosphorescence Yellow-Emitting Layers
title_full_unstemmed Highly Efficient White Organic Light-Emitting Diodes with Controllable Excitons Behavior by a Mixed Interlayer between Fluorescence Blue and Phosphorescence Yellow-Emitting Layers
title_sort highly efficient white organic light-emitting diodes with controllable excitons behavior by a mixed interlayer between fluorescence blue and phosphorescence yellow-emitting layers
publisher Hindawi Limited
series International Journal of Photoenergy
issn 1110-662X
1687-529X
publishDate 2013-01-01
description A highly efficient hybrid white organic light-emitting diode (HWOLED) has been demonstrated with a mixed interlayer between fluorescent blue and phosphorescent yellow-emitting layers. The device structure is simplified by using a controllable fluorescence-mixed interlayer-phosphorescence emission layer structure. The electroluminance (EL) performance can be modulated easily by adjusting the ratio of the hole-predominated material to the electron-predominated material in the interlayer. It is found that the HWOLED with a ratio of 3 : 2 exhibits a current efficiency of 34 cd/A and a power efficiency of 29 lm/W at 1000 cd/m2 with warm white Commission Internationale de l’Eclairage (CIE1931) coordinates of (0.4273, 0.4439). The improved efficiency and adaptive CIE coordinates are attributed to the controllable mixed interlayer with enhanced charge carrier transport, optimized excitons distribution, and improved harvestings of singlet and triplet excitons.
url http://dx.doi.org/10.1155/2013/831765
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AT xiaoboshi highlyefficientwhiteorganiclightemittingdiodeswithcontrollableexcitonsbehaviorbyamixedinterlayerbetweenfluorescenceblueandphosphorescenceyellowemittinglayers
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AT leizhang highlyefficientwhiteorganiclightemittingdiodeswithcontrollableexcitonsbehaviorbyamixedinterlayerbetweenfluorescenceblueandphosphorescenceyellowemittinglayers
AT zhaokuiwang highlyefficientwhiteorganiclightemittingdiodeswithcontrollableexcitonsbehaviorbyamixedinterlayerbetweenfluorescenceblueandphosphorescenceyellowemittinglayers
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