Increasing electric field strength in polymer capacitors

Increased electric field breakdown in several polymer-based capacitor dielectrics, including biaxially oriented polypropylene, has been demonstrated using electron and hole blocking layers. Increased electric field breakdown translates into increased energy density. Presented here is work that includes using these blocking layers for a new capacitor dielectric material with a high permittivity (K). Initial results are promising, increasing the potential for even higher energy density polymer capacitors.