Warm-white hyperfluorescent organic light-emitting diodes based on complementary color emission.
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| Title: | Warm-white hyperfluorescent organic light-emitting diodes based on complementary color emission. |
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| Authors: | Wang, Jiaqi1,2 (AUTHOR) 19843559282@163.com, Li, Yaxin1,2 (AUTHOR) 13944698385@163.com, Pan, Chaoteng1,2 (AUTHOR) panchaoteng@163.com, Gao, Yuxun1,2 (AUTHOR) 17861822098@163.com, Jin, Chunling1,2 (AUTHOR) 1978464833@qq.com, Zhang, Gang1,2 (AUTHOR) zg982@163.com, Dong, He1,2 (AUTHOR) donghe@jlnu.edu.cn, Wang, Jin1,2 (AUTHOR) jwang@jlnu.edu.cn |
| Source: | Modern Physics Letters B. 6/10/2026, Vol. 40 Issue 16, p1-17. 17p. |
| Subjects: | Organic light emitting diodes, Delayed fluorescence, Chromaticity, Photon emission, Quantum efficiency |
| Abstract: | Paving the way for the next generation of display technologies are organic light-emitting diodes (OLEDs), a leader in technological innovation. Despite significant advancements, developing white OLEDs (WOLEDs) with simultaneously high color purity, long operational lifetime, and high efficiency remains a formidable challenge. The core of our strategy to tackle this challenge was the development of a dual-color hyperfluorescent OLED that incorporated thermally activated delayed fluorescence (TADF) materials. This will enable the device to deliver excellent warm-white light performance. This architecture employs DMAC-DPS as the TADF sensitizer, with TBPe and PO-01-TB serving as the blue and yellow emitters, respectively. The structure of the blue layer was DPEPO: 40% DMAC-DPS: 1% TBPe (20 nm), and the ultra-thin phosphor PO-01-TB (0.1 nm) was used as the yellow light layer. By optimizing the device structure, a high-performance warm-white OLED was obtained. The maximum power efficiency (PE) and external quantum efficiency (EQE) of the device are 31.86% lm W − 1 and 13.54%, respectively. At a brightness of 1000 cd m − 2 , the Commission Internationale d'Eclairage (CIE) was (0.46, 0.50). When the brightness increases from 1 cd m − 2 to the maximum value of 638 coordinates of 2 cd m − 2 , the CIE coordinates only change from (0.46, 0.50) to (0.44, 0.49), with very little variation, implementing warm white light emission. The high performance of the device is attributed to its hyperfluorescent structure. [ABSTRACT FROM AUTHOR] |
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| Database: | Engineering Source |
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