Numerical Analysis and Optimization of a Hybrid Layer Structure for Triplet-Triplet Fusion Mechanism in Organic Light-Emitting Diodes

被引：2

作者：

Huang, Jun-Yu ^{[1
,2
]}

Hung, Hsiao-Chun ^{[1
]}

Hsu, Kung-Chi ^{[1
]}

Chen, Chia-Hsun ^{[3
]}

Lee, Pei-Hsi ^{[1
]}

Lin, Hung-Yi ^{[1
]}

Lin, Bo-Yen ^{[4
]}

Leung, Man-kit ^{[3
]}

Chiu, Tien-Lung ^{[5
]}

Lee, Jiun-Haw ^{[1
]}

Friend, Richard H. H. ^{[2
]}

Wu, Yuh-Renn ^{[1
]}

机构：

[1] Natl Taiwan Univ, Grad Inst Photon & Optoelect, Dept Elect Engn, Taipei 10617, Taiwan

[2] Univ Cambridge, Cavendish Lab, Cambridge CB3 0HE, England

[3] Natl Taiwan Univ, Dept Chem, Taipei 10617, Taiwan

[4] Natl Dong Hwa Univ, Dept Optoelect Engn, Hualien, Taiwan

[5] Yuan Ze Univ, Dept Elect Engn, Taoyuan 32003, Taiwan

来源：

ADVANCED THEORY AND SIMULATIONS | 2023年 / 6卷 / 02期

关键词：

device modeling; organic light-emitting diodes; triplet- triplet fusion; ACTIVATED DELAYED FLUORESCENCE; CHARGE-TRANSPORT; EFFICIENCY; MOBILITY;

D O I：

10.1002/adts.202200633

中图分类号：

O [数理科学和化学]; P [天文学、地球科学]; Q [生物科学]; N [自然科学总论];

学科分类号：

07 ; 0710 ; 09 ;

摘要：

In this study, a steady state and time-dependent exciton diffusion model including singlet and triplet excitons coupled with a modified Poisson and drift-diffusion solver to explain the mechanism of hyper triplet-triplet fusion (TTF) organic light-emitting diodes (OLEDs) is developed. Using this modified simulator, various characteristics of OLEDs, including the current-voltage curve, internal quantum efficiency, transient spectrum, and electric profile are demonstrated. This solver can also be used to explain the mechanism of hyper-TTF-OLEDs and analyze the loss from different exciton mechanisms. Furthermore, we perform additional optimization of hyper-TTF-OLEDs that increases the internal quantum efficiency by approximate to 33% (from 29% to 40%).

引用

页数：11

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