Patent ID: 11908965
Assignee: LUMENCO, LLC
Field: Semiconductors (Electrical engineering)
Classification: CPC H  G  Y | IPC G  H

Claim 0:
1. A photovoltaic (PV) system, comprising:
a PV device with an upper surface configured for receiving sunlight and converting the received sunlight into electrical energy; and
an infrared (IR) reflecting film, comprising:
a substrate with a top surface and a bottom surface, wherein the bottom surface is mated with the upper surface of the PV device,
a plurality of structures, each with a recessed surface, formed on the top surface of the substrate, and
a reflective mask on the top surface of the substrate comprising a plurality of reflective elements each disposed in one of the plurality of structures on the recessed surface,

wherein the IR reflecting film reflects a portion of the sunlight having a wavelength greater than about 950 nanometers (nm).