Reversible dielectric polymers with switchable conduction and insulation for electrostatic protection

Area of Science:

• Materials Science
• Electrical Engineering
• Nanotechnology

Background:

• Advanced electronic devices face electrostatic discharge (ESD) risks due to increased power density and integration.
• Traditional packaging materials struggle with long-term charge accumulation, threatening device reliability.

Purpose of the Study:

• To develop an adaptive field grading material for rapid charge dissipation during ESD events.
• To create a material that transitions between insulating and conductive states for enhanced electrostatic protection.

Main Methods:

• Synthesized a silicon carbide-derived nanofiber mat using electrospinning.
• Engineered a "step-by-step" double Schottky barrier within the nanofiber mat.
• Combined the nanofiber mat with an insulating epoxy-based matrix.

Main Results:

• Achieved effective electric field grading at ultra-low material content (0.3 vol%).
• Demonstrated precise customization of the insulation-conductive transition electric field via nanofiber content.
• Fabricated an adaptive material transitioning between insulating and conductive states.

Conclusions:

• The developed material offers a novel solution for electrostatic protection in electronic devices.
• Findings provide significant guidance for electrostatic protection strategies across diverse insulating polymers and metal oxides.
• The adaptive field grading material enhances the reliability of electronic components against ESD.