Patent ID: 6777681
Filing Date: 2004-08-17
Classification: G01J,H01L

Abstract:
An apparatus, comprising an infrared detector with a plurality of detector elements that each include:an amorphous silicon portion which has a selected temperature coefficient of resistance; and first and second electrodes which are electrically coupled to said amorphous silicon portion at spaced locations thereon, said first and second electrodes and said amorphous silicon portion having a structural configuration which is selected to provide between said first and second electrodes through said amorphous silicon portion at a given temperature a resistance which is selected substantially independently of said temperature coefficient of resistance; wherein said amorphous silicon portion is a layer having each of said first and second electrodes on one side thereof; and including a third electrode on a side of said amorphous silicon layer opposite from said first and second electrodes, said third electrode having respective portions which are each aligned with a respective one of said first and second electrodes; wherein said first and second electrodes are made of a material which absorbs thermal energy, are in thermal communication with said amorphous silicon portion, and are sufficiently thin so that they are substantially absorbing to infrared radiation; and wherein said electrodes are made from an alloy which includes aluminum and titanium.