研究目的
Investigating the dual emission of fluorescence and phosphorescence from a solid state of 9,9’-(6-(4-halophenoxy)-1,3,5-triazine-2,4-diyl)bis(9H-carbazole) at room temperature for potential use in OLED devices.
研究成果
The study successfully demonstrated the dual emission of fluorescence and phosphorescence from a solid state at room temperature, attributed to iodine-pi interactions stabilizing the pi-pi overlap. This mechanism was supported by spectral and X-ray analysis. The fabricated OLED device showed white light emission, paving the way for next-generation white OLED devices.
研究不足
The device performance of the OLED using the dual emission material is still low, indicating areas for optimization in material design and device fabrication.
1：Experimental Design and Method Selection:
The study involved the preparation and evaluation of a series of s-triazine compounds for potential use in OLED devices. The photophysical properties of these materials were analyzed to observe dual fluorescence and phosphorescence at room temperature.
2：Sample Selection and Data Sources:
Powders of the materials were used to observe luminescence properties. The structures of the compounds were analyzed using X-ray analysis.
3：List of Experimental Equipment and Materials:
The study utilized dichloromethane and methylcyclohexane (MCH) as solvents for spectral analysis. OLED devices were fabricated using a vacuum evaporation instrument.
4：Experimental Procedures and Operational Workflow:
The absorption and emission spectra of the compounds were measured at room temperature and 77K. The OLED device performance was evaluated based on the emission characteristics.
5：7K. The OLED device performance was evaluated based on the emission characteristics.
Data Analysis Methods:
5. Data Analysis Methods: The photophysical properties, including fluorescence quantum yield and lifetime, were analyzed. The device efficiency and emission characteristics were evaluated.
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