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Open AccessArticle

Management of Exciton for Highly-Efficient Hybrid White Organic Light-Emitting Diodes with a Non-Doped Blue Emissive Layer

1
Jiangsu Key Laboratory for Carbon-Based Functional Materials & Devices, Institute of Functional Nano & Soft Materials (FUNSOM), Soochow University, Suzhou 215123, China
2
Institute of Organic Optoelectronics, Jiangsu Industrial Technology Research Institute (JITRI), 1198 Fenhu Dadao, Wujiang, Suzhou 215123, China
*
Author to whom correspondence should be addressed.
Academic Editors: Andrei Rotaru and Maria Dinescu
Molecules 2019, 24(22), 4046; https://doi.org/10.3390/molecules24224046
Received: 13 October 2019 / Revised: 1 November 2019 / Accepted: 4 November 2019 / Published: 8 November 2019
Hybrid white organic light-emitting diodes (WOLEDs) have drawn great attention both for display and solid-state lighting purposes because of the combined advantages of desirable stability of fluorescent dyes and high efficiency of phosphorescent materials. However, in most WOLEDs, obtaining high efficiency often requires complex device structures. Herein, we achieved high-efficiency hybrid WOLEDs using a simple but efficacious structure, which included a non-doped blue emissive layer (EML) to separate the exciton recombination zone from the light emission region. After optimization of the device structure, the WOLEDs showed a maximum power efficiency (PE), current efficiency (CE), and external quantum efficiency (EQE) of 82.3 lm/W, 70.0 cd/A, and 22.2%, respectively. Our results presented here provided a new option for promoting simple-structure hybrid WOLEDs with superior performance. View Full-Text
Keywords: white organic light-emitting diodes; hybrid; non-doped blue emissive layer; exciton management white organic light-emitting diodes; hybrid; non-doped blue emissive layer; exciton management
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MDPI and ACS Style

Luo, W.; Chen, X.; Sun, S.-Q.; Zhang, Y.-J.; Wang, T.-T.; Liao, L.-S.; Fung, M.-K. Management of Exciton for Highly-Efficient Hybrid White Organic Light-Emitting Diodes with a Non-Doped Blue Emissive Layer. Molecules 2019, 24, 4046.

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