研究目的
Developing high-performance, ink-jet printable OLED materials to improve efficiency, lifetime, and color gamut of OLEDs, and to achieve film uniformity in pixels.
研究成果
The study successfully developed high-performance, ink-jet printable OLED materials, including platforms, small molecule hosts, and new emitters. Film uniformity in pixels was improved by controlling ink convection during the drying process. The developed materials and methods show promise for OLED display applications.
研究不足
The study does not mention the scalability of the developed materials and methods for mass production. The environmental impact of the solvents and materials used is not discussed.
1：Experimental Design and Method Selection:
The study focused on developing ink-jet printable OLED materials, including platforms and small molecule hosts, and new emitters for deep color and narrow FWHM. Solvent systems were also developed for film uniformity.
2：Sample Selection and Data Sources:
The study used a wide range of platforms and small molecule hosts, and synthesized new deep-red emitters. Data on PLQY, FWHM, viscosity, and surface tension were collected.
3：List of Experimental Equipment and Materials:
Absolute PL quantum yield spectrometer C2290-02 (Hamamatsu photonics K. K.), Dimatix Material Printer (DMP2831), 2-Methyltetrahydrofuran as a solvent, and various organic solvents for ink preparation.
4：Experimental Procedures and Operational Workflow:
The study involved measuring PLQY, printing inks on substrates with pixel bank structures, drying in a vacuum chamber, and annealing. Film uniformity was measured and analyzed.
5：Data Analysis Methods:
The relationship between PLQY and emission peak wavelength was analyzed. Film uniformity was calculated based on thickness profiles.
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