Patent ID: 9298081
Filing Date: 2016-03-29
CPC Classification: G02B,G03F

Claim Text:
1. A method comprising: forming a multilayer on an upper surface of a substrate; forming a capping layer over the multilayer; forming diffuse scattering layers comprising silicon (Si) over the capping layer, each diffuse scattering layer formed to a thickness of 5 nanometers (nm) to 50 nm; forming an absorber layer to a thickness of 2 nm to 20 nm over each diffuse scattering layer, each absorbing layer comprising tantalum nitride (TaN), tantalum nitride oxide (TaNO), tantalum borate (TaBO), Ni, gold (Au), silver (Ag), C, tellurium (Te), platinum (Pt), palladium (Pd), or Cr; forming nano-particles between each absorber layer and the underlying diffuse scattering layers or embedding nano-particles in each diffuse scattering layer; and etching the diffuse scattering layers to form a stack.