Embedded Capacitance Materials with Improved Dielectric Performances by introducing Ag@MOFs Particles into the Barium Titanate / Epoxy Resin Matrix

Embedded capacitor is the next generation technology of the currently used discrete capacitor considering its various advantages. However, improved dielectric performances are still required for embedded capacitance materials (ECMs) meeting the demands of high-end electronics. In this work, a new method for improving the dielectric performances of ECMs has been provided by introducing Ag@MOFs (Ag encapsulated metal-organic frameworks) particles into the barium titanate / epoxy resin (BT /ER) matrix. The synthesized Ag@MOFs were characterized. Sedimentation ratio and viscosity of pastes fabricated by varied contents of Ag@MOFs particles were studied. The in-situ formed Ag nanoparticles inside the MOFs pores are beneficial for reducing conductive networks thus improving the dielectric performances. The dielectric constant can be improved to 25.32 and the dielectric loss can be kept below 0.05 at 1 KHz. Giving the vast kinds of structures and chemical properties of MOFs, the introduction of Ag@MOFs particles into the BT / ER matrix will inspire new methods for developing advanced ECMs.