The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Sep. 22, 1992
Filed:
Jun. 12, 1991
Paul R Norton, Santa Barbara, CA (US);
Santa Barbara Research Center, Goleta, CA (US);
Abstract
Methods of fabricating a two-color infrared detector array, and an array of same fabricated by the methods. There is disclosed (a) selectively forming a plurality of first regions upon or within a surface of a substrate, the first regions being comprised of a first semiconductor material having a first type of electrical conductivity and a significant responsivity to wavelengths within a first spectral band. A second step (b) forms a substantially continuous layer comprised of a second semiconductor material over the surface of the substrate and over the plurality of first regions, the layer being comprised of semiconductor material having a second type of electrical conductivity for forming a plurality of first heterojunctions with the first regions. A third step (c) selectively forms a plurality of second regions upon the layer, individual ones of which are in registration with a corresponding one of the first regions. The second regions are comprised of a semiconductor material having the first type of electrical conductivity for forming a plurality of second heterojunctions with the underlying layer and a significant responsivity to wavelengths within a spectral band that does not significantly overlap the first spectral band.