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Updated: Feb 7, 2026

Step-by-Step Guide for Harnessing Organic Light Emitting Diodes by Solution Processed Device Fabrication of a TADF Emitter
Published on: November 7, 2025
Dendronized delayed fluorescence emitters for non-doped, solution-processed organic light-emitting diodes with high
Yifan Li1, Guohua Xie1, Shaolong Gong1
1Hubei Collaborative Innovation Center for Advanced Organic Chemical Materials , Hubei Key Lab on Organic and Polymeric Optoelectronic Materials , Department of Chemistry , Wuhan University , Wuhan , 430072 , People's Republic of China .
Abstract:
We have developed two new carbazole-dendronized emitters based on a green emissive thermally activated delayed fluorescence (TADF) core. Both dendrimers possess excellent thermal stability, good solution processability, and an obvious TADF feature. Non-doped OLEDs based on the emitters formed by a solution process exhibit a maximum external quantum efficiency (EQE) of 13.8%. Remarkably, the EQE remains as high as 13.3% at the high luminance of 1000 cd m-2. To the best of our knowledge, this is one of the highest EQE values for dendrimer-based fluorescent OLEDs, which nearly harvest all of the generated excitons and exhibit a considerably low loss of EQE estimated from 1000 to 5000 cd m-2. Furthermore, we reveal a new emissive approach to utilize the excitons by a combination of both TADF and exciplex emission.
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