Barrier photodetectors matrix with pixellation by local depletions

US11329095B2 · kind B2 · utility

Assignee

• COMMISSARIAT A L'ENERGIE ATOMIQUE ET AUX ENERGIES ALTERNATIVES · FR

Inventors

• Francois Boulard · Grenoble, FR
• Cyril Cervera · Grenoble, FR
• Alexandre Ferron · Grenoble, FR

Key dates

• Filing date: Feb 4, 2020
• Grant date: May 10, 2022
• Expiry date: Jul 16, 2040

Classification

• Technology area (CPC H): Electricity
• CPC primary: H10F39/184

Abstract

A photodetection device includes a pixel matrix in which each pixel includes a barrier photodetector. The pixel matrix includes an absorption layer, a barrier layer, a contact layer, and at least one separation element to delimit the pixels. At least one separation element extends above the contact layer, and forms at least one depletion zone that extends locally in the contact layer, to block the lateral circulation of charge carriers.