Optimization of process parameters in micro-scale pneumatic aerosol jet printing for high-yield precise electrodes

Area of Science:

• Materials Science and Engineering
• Additive Manufacturing
• Nanotechnology

Background:

• Aerosol jet printing (AJP) is a versatile non-contact printing technique for precise pattern fabrication.
• Pneumatic AJP offers advantages for industrial applications due to reduced nozzle clogging.
• Conductive inks, such as soluble silver clusters, are crucial for electronic applications.

Purpose of the Study:

• To optimize the line electrode formation process using aerosol jet printing with soluble silver ink.
• To investigate the influence of key AJP parameters on line width and electrical resistivity.
• To establish an optimized operability window and a predictive model for line width.

Main Methods:

• Systematic investigation of aerosol formation and printing parameters, including sheath flow rate, atomizer flow rate, and dispensing speed.
• Utilized soluble silver clusters as conductive ink for line electrode fabrication.
• Developed a regression equation to statistically estimate line width based on process parameters.

Main Results:

• Identified key parameters influencing line width and resistivity in the AJP process.
• Established an optimized operability window for printing high-quality, low-resistivity lines.
• Demonstrated precise control over line width through parameter optimization, achieving a regression equation for prediction.

Conclusions:

• The study confirms the feasibility of an integrated printing system for precise line width control via AJP parameter optimization.
• Pneumatic AJP demonstrates robust process stability for electrode formation.
• The optimized AJP techniques show significant potential for application in the electronic and display industries.