研究目的
To improve carbon nanotube (CNT) paste field emitter by optimizing the size distribution of SiC aggregates as inorganic fillers using a novel milling process.
研究成果
The CNT paste emitter with the optimal SiC nanometer-fillers exhibits strong adhesion between CNTs and the cathode, a uniform emission surface morphology, and superior field emission characteristics, making it very useful for a variety of field emission devices.
研究不足
The study focuses on the optimization of SiC aggregates size distribution for CNT paste emitters, but does not explore other potential fillers or methods for improving field emission properties.
1：Experimental Design and Method Selection:
The study involved optimizing the size distribution of SiC aggregates through a novel milling process to improve the field emission properties of CNT paste emitters.
2：Sample Selection and Data Sources:
As-purchased SiC nanometer-filler with a primary particle size of about 60 nm in diameter and naturally aggregates to around 7 μm in D50 was used.
3：List of Experimental Equipment and Materials:
Particle size analyzer, scanning electron microscopy (SEM), vacuum chamber, Kovar metal cathodes, screen printing method.
4：Experimental Procedures and Operational Workflow:
The particle size distribution of SiC was controlled by pulverizing it with terpineol through a novel milling process. CNT pastes were formulated and printed on Kovar metal cathodes. Field emission characteristics were measured in a diode mode in a vacuum chamber.
5：Data Analysis Methods:
The particle size distribution was measured, and field emission characteristics were analyzed using current-voltage curves and Folwer-Nordheim plots.
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