We report the synthesis of an epoxy-based composite containing randomly distributed silver nanoparticles with a narrow size distribution centered around 40nm. The surface of the Ag nanoparticles is coated with a thin layer of mercaptosuccinic acid (MSA) in order to promote formation of the Ag-epoxy while retaining flexibility of the polymer matrix. This composite is the basis of a prototype capacitor formed by spin coating the synthesized Ag-epoxy (40nm Ag) mixture onto a gold-deposited aluminum substrate. A series of Ag-epoxy composites with various Ag volume fractions was investigated in order to determine the composition associated with optimum capacitor performance. The high dielectric constant (> 300) and relatively low dielectric loss (
Revised: February 6, 2008 |
Published: July 8, 2005
Citation
Qi L., B.I. Lee, S. Chen, W.D. Samuels, and G.J. Exarhos. 2005.High-Dielectric-Constant Silver-Epoxy Composites as Embedded Dielectrics.Advanced Materials 17, no. 14:1777-1781.PNNL-SA-44805.