Patent ID: 6815250
Filing Date: 2004-11-09
Classification: H01L

Abstract:
A method for manufacturing an infrared detector comprising the steps of:forming a low concentration p type HgCdTe layer on an upper part of a transparent substrate; forming a diffusion preventing layer with some part exposed on the low concentration p type HgCdTe layer; forming a low concentration n type HgCdTe layer by diffusing hydrogen ions and atoms to the exposed low concentration p type HgCdTe layer using an inductive-coupled plasma generator without etching the low concentration p type HgCdTe layer, and forming a p-n junction; removing the diffusion preventing layer, and forming an insulating layer on entire upper surfaces of the low concentration p type HgCdTe layer and the low concentration n type HgCdTe layer; forming a contact hole on the insulating layer so as to expose some upper surfaces of the low concentration p type HgCdTe layer and the low concentration n type HgCdTe layer; forming plugs contacted to upper parts of the low concentration p type HgCdTe layer and the low concentration n type HgCdTe layer in contact holes; and forming a pad contacted to the respective plugs and located on some upper part of the insulating layer to be a predetermined area by depositing and patterning the metal layer on the entire upper surface of the above structure.