journal article·2024-04-01

Ternary Wrapped Nitrogen/Carbonyl Multiresonance TADF Emitters with Quenching-Resistant Abilities

Fu-Ming Liu, Zhi-Hao Qu, Peng Zuo, You-Jun Yu, Meng-Tian Li, Liang-Sheng Liao, Dong-Ying Zhou, Zuo-Quan Jiang

ACS Materials Letters· Volume 6· Issue 4
Publisher page

Abstract

Multiresonance thermally activated delayed fluorescence (MR-TADF) materials with rigid planar structures offer high photoluminescence quantum yields and narrowband emission for display applications. However, aggregation-caused quenching (ACQ) caused by chromophore interactions can detrimentally affect device performance. To address this, we modified MR-TADF chromophores with bulky terphenyl groups, successfully synthesizing the blue emitter TTPQAO. Its distorted structure effectively suppresses ACQ. Remarkably, at doping concentrations from 2 to 20 wt %, the external quantum efficiency only decreased by 4.3% with a slight fwhm broadening of 1 nm. Our work provides a practical approach to mitigate ACQ in TADF materials.
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Research context

OpenAlex topics: Organic Light-Emitting Diodes Research · Luminescence and Fluorescent Materials · Organic Electronics and Photovoltaics

SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.

Affiliations

Institute of Functional Nano & Soft Materials (FUNSOM), Jiangsu Key Laboratory for Carbon-Based Functional Materials & Devices, Soochow University, Suzhou, 215123 Jiangsu, P. R. China

Macao Institute of Materials Science and Engineering, Macau University of Science and Technology, Taipa, 999078 Macau SAR, China

Funding

Suzhou Key Laboratory of Functional Nano and Soft Materials · Collaborative Innovation Center of Suzhou Nano Science and Technology · Natural Science Foundation of Jiangsu Province · National Natural Science Foundation of China · Higher Education Discipline Innovation Project · Joint International Research Laboratory of Carbon-based Functional Materials and Devices, Ministry of Education

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