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Development of time-dependent Exciton diffusion solver for modeling Triplet-Triplet Fusion Mechanism in OLEDs

In this work, we developed a both stable and time-dependent exciton diffusion model including singlet and triplet exciton coupled with a modified Poisson & drift-diffusion solver to demonstrate the mechanism of triplet-triplet fusion (TTF) OLEDs. Using this modified simulator, we can demonstrate...

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Bibliographic Details
Main Authors: Huang, Jun-Yu, Hung, Hsiao-Chun, Hsu, Kung-Chi, Chen, Chia-Hsun, Lee, Pei-Hsi, Lin, Hung-Yi, Lin, Bo-Yen, Leung, Man-Kit, Chiu, Tien-Lung, Lee, Jiun-Haw, Wu, Yuh-Renn
Format: Conference Proceeding
Language:English
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Summary:In this work, we developed a both stable and time-dependent exciton diffusion model including singlet and triplet exciton coupled with a modified Poisson & drift-diffusion solver to demonstrate the mechanism of triplet-triplet fusion (TTF) OLEDs. Using this modified simulator, we can demonstrate the characteristics of OLEDs including current-voltage curve, quantum efficiency performance, time-resolved electroluminescence spectrum, and electric profile...etc. Also, this solver can be used to explain the mechanism of hyper-TTF OLEDs, and analysis the loss from different exciton mechanism. Furthermore, we can do further optimization for TTF-OLEDs to achieve an internal quantum efficiency increasing of 23% (from 29% to 36%).
ISSN:2158-3234
DOI:10.1109/NUSOD54938.2022.9894743