Improved Manufacturing Performance of Screen Printed Carbon Electrodes through Material Formulation

Area of Science:

• Materials Science
• Chemical Engineering
• Electrical Engineering

Background:

• Screen printing is a scalable manufacturing method for novel sensing materials.
• Controlled drying of carbon paste is a critical bottleneck in thick film printing.
• Carbon graphite materials are essential components in screen-printed sensors.

Purpose of the Study:

• To investigate the relationship between material solvent, printed film conductivity, and process consistency.
• To identify methods for improving the productivity and performance of screen-printed carbon materials.

Main Methods:

• Experimental examination of carbon paste drying with varying solvent boiling points.
• Measurement of printed film conductivity and sheet resistance.
• Drying simulations and analysis of multi-layered printing techniques.

Main Results:

• Reducing solvent boiling point significantly increases process productivity and consistency.
• Lower boiling point solvents improve film conductivity by reducing sheet resistance.
• Multi-layered printing offers a more time-efficient manufacturing approach.

Conclusions:

• Optimizing solvent properties is key to overcoming bottlenecks in screen printing processes.
• The findings enhance the volume manufacturing of carbon sensor electrodes.
• This research has broader implications for conductive carbon applications in circuits and photovoltaics.