Strategically manage singlet and triplet excitons by phosphorescence sensitization in organic light-emitting diodes

Zhenyong Guo; Shengjie Lv; Jianxin Lin

doi:10.1117/12.3040024

16 August 2024 Strategically manage singlet and triplet excitons by phosphorescence sensitization in organic light-emitting diodes

Zhenyong Guo, Shengjie Lv, Jianxin Lin

Author Affiliations +

Proceedings Volume 13231, 4th International Conference on Laser, Optics, and Optoelectronic Technology (LOPET 2024); 132311M (2024) https://doi.org/10.1117/12.3040024
Event: 4th International Conference on Laser, Optics, and Optoelectronic Technology (LOPET 2024), 2024, Chongqing, China

Abstract

Organic light-emitting diodes (OLEDs) utilizing full-fluorescent emissions, exhibit notable advantages, including costeffectiveness and excellent color stability. Additionally, managing excitons within fluorescent WOLEDs further complicates the matter. In this study, this article had successfully developed high performance fluorescent OLEDs by precisely controlling the concentration of phosphorescent-sensitized red fluorescent emitters within the emissive layer. The emissive layer consists of a blend of phosphorescent sensitizer Ir(ppy)₃ with red fluorescent emitter DCJTB. The resulting red fluorescent OLEDs ’s current efficiency is 10.88 cd/A, power efficiency is 11.39 lm/W. At a brightness of 1000 cd/m^2, the efficiency values are 3.98 cd/A, 6.38 lm/W. The proposed strategic approach offers a promising path towards practically deploying high-performance red fluorescent WOLEDs in academic and industrial contexts.

(2024) Published by SPIE. Downloading of the abstract is permitted for personal use only.

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Zhenyong Guo, Shengjie Lv, and Jianxin Lin "Strategically manage singlet and triplet excitons by phosphorescence sensitization in organic light-emitting diodes", Proc. SPIE 13231, 4th International Conference on Laser, Optics, and Optoelectronic Technology (LOPET 2024), 132311M (16 August 2024); https://doi.org/10.1117/12.3040024

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KEYWORDS

Organic light emitting diodes

Excitons

Doping

Energy transfer

Energy efficiency

Molecules

Phosphorescence

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