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Enhanced efficiency of solution-processed lanthanide-based OLEDs via ligand engineering: Tuning excited-state lifetime and charge transport with Se-modified ligandстатья Исследовательская статья
Статья опубликована в высокорейтинговом журнале
Статья опубликована в журнале из списка Web of Science и/или Scopus- Авторы: Guo Zhipeng, Gladkikh Arseny, Latipov Egor, Vashchenko Andrey, Liu Yaxuan, Medvedko Alexey, Goloveshkin Alexander, Maloshitskaya Olga, Alexandrov Alexey, Zhou Aowei, Yin Yiming, Zhu Yanan, Meng Hong, Utochnikova Valentina
- Журнал: Chinese Chemical Letters
- Год издания: 2025
- Издательство: Institute of Materia Medica
- Местоположение издательства: China
- Номер статьи: 112136
- DOI: 10.1016/j.cclet.2025.112136
- Аннотация: Lanthanide complexes attract significant attention for their narrow-band emission with nearly constant wavelengths; however, developing high-efficiency lanthanide-complex organic light-emitting diode (OLED) devices and methodologies remains a primary research focus. We selected neutral ligands [1,2,5]thiadiazolo[3,4-f][1,10]phenanthroline (TDZP) and its selenium (Se)-containing counterpart, [1,2,5]selenadiazolo[3,4-f][1,10]phenanthroline (SDZP), to form complexes with dibenzoylmethane (Hdbm). Detailed investigations combining theoretical calculations and experimental data reveal synergistic effects between excited-state lifetimes and charge carrier mobility in enhancing quantum efficiency. All the devices demonstrated characteristic lanthanide ion emission, with the Eu(dbm)3SDZP-based OLED achieving remarkable electroluminescent performance: a maximum quantum efficiency (EQEmax) of 6.7 %, ranking among the highest reported values for Eu-based complex OLEDs. This integrated computational-experimental approach establishes a viable strategy for developing high-efficiency lanthanide-complex OLEDs.
- Добавил в систему: Гладких Арсений Юрьевич
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