Patent ID: 9219185
Filing Date: 2015-12-22
Classification: G01J,H01L

Abstract:
1. A method comprising: providing a substrate with a membrane on a first surface of the substrate, wherein the membrane has one or more openings that expose one or more portions of the first surface, and includes a thermopile; depositing a sacrificial layer on the membrane and in the one or more openings; patterning the sacrificial layer to expose a portion of the membrane associated with one or more hot junctions of the thermopile; forming a rigid, thermally-conductive layer on the sacrificial layer and on the exposed portion of the membrane associated with the one or more hot junctions of the thermopile; depositing an absorber on the rigid, thermally-conductive layer; forming a cavity in the substrate from a second surface of the substrate to the membrane; and removing the sacrificial layer.