研究目的
Investigating the design and synthesis of new emitters with aggregation-induced delayed fluorescence (AIDF) properties for high-performance solution-processed OLEDs with small efficiency roll-off.
研究成果
The study successfully demonstrated that small molecules with AIDF properties can achieve high external quantum efficiencies and very small efficiency roll-offs in both solution-processed and vacuum-deposited OLEDs, indicating their potential for high-performance OLED applications.
研究不足
The study focuses on the synthesis and initial performance evaluation of new emitters. Long-term stability and scalability for industrial applications were not addressed.
1：Experimental Design and Method Selection:
The study involved the design and synthesis of two new emitters with AIDF properties. The electronic structures, thermal stability, electrochemical behaviors, photoluminescence property, and electroluminescence performance were thoroughly investigated.
2：Sample Selection and Data Sources:
The emitters were synthesized using electron-withdrawing benzoyl and electron-donating phenoxazine and 9,9-dihexylfluorene.
3：List of Experimental Equipment and Materials:
The synthesis involved various organic solvents and reagents, and the OLED fabrication used materials like PEDOT:PSS, PVK, CBP, TmPyPB, LiF, and Al.
4：Experimental Procedures and Operational Workflow:
The emitters were synthesized through a series of chemical reactions, and OLED devices were fabricated using both solution-processed and vacuum-deposited methods.
5：Data Analysis Methods:
The photophysical and electrochemical properties were analyzed using techniques like NMR, high-resolution mass spectra, cyclic voltammetry, and transient PL decay spectra.
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