Highly Efficient Electrofluorescence Material Based on Pure Organic Phosphor Sensitization*.
Jiaxuan WangBaoyan LiangJinbei WeiZhiqiang LiYincai XuTong YangChenglong LiYue WangPublished in: Angewandte Chemie (International ed. in English) (2021)
Pure organic room-temperature phosphorescence (RTP) materials are considered as potential candidates for replacing precious metal complexes to fabricate highly efficient organic light-emitting devices (OLEDs). However, applications of the reported RTP materials in OLEDs are seriously impeded by their low photoluminescence quantum yields (PLQYs) in a thin film state. To overcome these obstacles, we established a new strategy to construct highly efficient OLEDs based on a pure organic RTP material sensitized fluorescence emitter by selecting benzimidazole-triazine molecules (PIM-TRZ), 2,6-di(phenothiazinyl)naphthalene (β-DPTZN), and 5,6,11,12-tetraphenylnaphthacene (rubrene) as host, phosphor sensitizer, and fluorescent emitter, respectively. The perfect combination of host, phosphorescent sensitizer, and fluorescent emitter in the emitting layer ensure the outstanding performance of the devices with an external quantum efficiency (EQE) of 15.7 %.
Keyphrases
- highly efficient
- light emitting
- room temperature
- energy transfer
- quantum dots
- water soluble
- molecular dynamics
- ionic liquid
- living cells
- staphylococcus aureus
- molecular docking
- risk assessment
- cystic fibrosis
- single molecule
- biofilm formation
- pseudomonas aeruginosa
- human health
- molecular dynamics simulations
- fluorescent probe