Journal
JOURNAL OF MATERIALS CHEMISTRY
Volume 18, Issue 40, Pages 4821-4826Publisher
ROYAL SOC CHEMISTRY
DOI: 10.1039/b807566b
Keywords
-
Funding
- National Science Foundation [ECS-0501405, CMMI 062115]
Ask authors/readers for more resources
A silver (Ag)-polymer nanocomposite has been developed by in-situ formation of metal nanoparticles within the polymer matrix and utilized as a high-dielectric constant (k) polymer matrix to enhance the dielectric properties of high-k composite materials. By using an in-situ photochemical reduction method, uniformly dispersed Ag nanoparticles of size of around 10 nm were generated in polymer matrices. Self-passivated aluminium (A1) particles were incorporated into this Ag-epoxy matrix and the dielectric properties of the as-prepared composite materials were investigated. The composites showed more than 50% increase in k values as compared with an A1/neat epoxy composite with the same filler loading of A1. The dielectric loss tangent of the A1/Ag-epoxy composites was below 0.1, which meets the requirement for embedded decoupling capacitors. These results suggest that the Ag-epoxy high-k polymer matrix effectively enhances the dielectric constant while maintaining the low dielectric loss of the high-k composites. In addition, detailed dielectric property measurements revealed that the dielectric properties and their frequency dispersion as well as the breakdown behaviors of the A1/Ag-epoxy composites were related to the incorporation and concentration of Ag nanoparticles in the high-k polymer matrix.
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available