研究目的
To design a jettable ink for printed OLEDs using a novel pathway to achieve stable droplet formation and uniform film deposition on treated substrates.
研究成果
The novel pathway to design ink resulted in stable droplet formation and uniform film deposition. The maximum current efficiency of the device by inkjet printing reached 73% of the spin-coated device, demonstrating the potential of this method for OLED fabrication.
研究不足
The study is limited to a specific type of polymer and solvent system. The scalability of the inkjet printing process for large-scale production needs further investigation.
1：Experimental Design and Method Selection:
The study focused on designing ink with specific physical characteristics for inkjet printing. A ternary solvent system was used to dissolve the polymer.
2：Sample Selection and Data Sources:
A blue thermally activated delayed fluorescence (TADF) polymer was selected as the light-emitting material.
3：List of Experimental Equipment and Materials:
The ink's physical parameters (viscosity, surface tension, density) were measured.
4：Experimental Procedures and Operational Workflow:
The polymer was dissolved in a ternary solvent system (A/B/C) with a mixed volume ratio of 4:2:
5：The ink was then inkjet printed onto a substrate to form a thin film. Data Analysis Methods:
The printability of the ink was assessed using dimensionless numbers (Reynolds number, Weber number, Ohnesorge number). The performance of the PLED device was evaluated based on current efficiency-luminance characteristics.
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