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:
Jan. 28, 2020
Filed:
Apr. 19, 2017
Commissariat a L'energie Atomique ET Aux Energies Alternatives, Paris, FR;
Johan Rothman, Grenoble, FR;
Abstract
The invention relates to a photodetection device comprising a substrate and a diodes network, the substrate comprising an absorption layer and each diode comprising a collection region with a first type of doping in the absorption layer. The device comprises a conduction mesh under the surface of the substrate, comprising at least one conduction channel inserted between the collection regions of two adjacent diodes, the at least one conduction channel having a second doping type opposite the first type and a higher doping density than the absorption layer. The doping density of the at least one conduction channel is derived from metal diffusion in the absorption layer from a metal mesh present on the substrate surface. The absorption layer has the first doping type. The invention also relates to a method of making such a device.