Flexible and low-k polymer featuring hard-soft-hybrid strategy

Area of Science:

• Materials Science
• Polymer Chemistry
• Microelectronics

Background:

• Dielectric materials for microelectronics face challenges with high dielectric constants and brittleness.
• Advanced materials are needed to meet the demands of next-generation electronic devices.

Purpose of the Study:

• To develop a novel dielectric material with enhanced flexibility, thermal stability, and a low dielectric constant.
• To overcome the limitations of conventional dielectric materials in microelectronic applications.

Main Methods:

• Synthesized a random copolymer (PDBD) via platinum-catalyzed hydrosilylation.
• Incorporated polydimethylsiloxane (PDMS), benzocyclobutene (BCB), and double-decker-shaped polyhedral silsesquioxanes (DDSQ) into a hybridized skeleton.
• Utilized a hard-soft-hybrid strategy for material design.

Main Results:

• Achieved a high molecular weight copolymer with inherent thermal curing capabilities.
• The cured PDBD copolymer demonstrated significant flexibility and high thermal stability.
• The material exhibited a notably low dielectric constant.

Conclusions:

• The developed PDBD copolymer shows great potential as a high-performance dielectric material for advanced microelectronics.
• The hard-soft-hybrid strategy effectively addresses the brittleness and high dielectric constant issues.
• This material offers a promising solution for next-generation electronic packaging and insulation.