Patent ID: 6479825
Filing Date: 2002-11-12
Classification: H01L

Abstract:
A particle sensor, in particular for a detector for analyzing products of collisions in particle physics apparatus, comprising:a semiconductor substrate, a plurality of doped regions formed in said substrate and each forming a diode in conjunction with said substrate, means for defining on top of a first face of said substrate a plurality of current collection areas for respectively collecting currents circulating in each of said diode regions as the result of impacts of particles on said sensor, said means for defining said current collection areas being adapted to be connected to means for using signals formed by the collected currents, biasing means for biasing each of said diode regions and for bringing said substrate to a totally depleted state, and means for defining on said first face of said substrate a plurality of particle detection areas, each of which comprises an oxide layer deposited on said first face of said substrate, contiguous with a respective current collection area, said means for defining said detection areas having a thickness on top of said substrate which is less than that of said means for defining said current collection areas, wherein said current collection areas and said detection areas have elongate shapes and are disposed in an alternating arrangement parallel to an edge of said substrate, and wherein the thickness of said oxide layer is less than or equal to 50 nm.