Two-particle nanocomposite dielectrics

A capacitor, comprising:

• a first electrode;
• a second electrode;
• a dielectric material that separates the first and second electrodes, the dielectric material comprising:
• a polymer;
• a distribution of first nanoparticles, the first nanoparticles having a first average diameter, and the first nanoparticles including one of a semiconductor or insulator;
• and
• a distribution of second nanoparticles, the second nanoparticles having a second average diameter that is larger than the first average diameter, and the second nanoparticles having a bulk dielectric constant κ greater than about 10, wherein the first or second nanoparticles include an organic surface layer.

A capacitor, comprising:

• a first electrode;
• a second electrode;
• a dielectric material that separates the first and second electrodes, the dielectric material comprising:
• a polymer;
• a distribution of first nanoparticles, the first nanoparticles having a first average diameter, and the first nanoparticles including one of a semiconductor or insulator;
• and
• a distribution of second nanoparticles, the second nanoparticles having a second average diameter that is larger than the first average diameter, and the second nanoparticles having a bulk dielectric constant κ greater than about 10, wherein the second nanoparticles include one or more of nanoparticles selected from a group of nanoparticles consisting of silicon dioxide, alumina, ceria, and zirconia.

A capacitor, comprising:

• a first electrode;
• a second electrode;
• a dielectric material that separates the first and second electrodes, the dielectric material comprising:
• a polymer;
• a distribution of first nanoparticles, the first nanoparticles having a first average diameter, and the first nanoparticles including one of a semiconductor or insulator;
• and
• a distribution of second nanoparticles, the second nanoparticles having a second average diameter that is larger than the first average diameter, and the second nanoparticles having a bulk dielectric constant κ greater than about 10, wherein the second average diameter is between about 25 nanometers and about 200 nanometers.