US 12,666,731 B2Granted

Simultaneous dual-band systems and methods

AssigneeAttollo Engineering, LLC

InventorsEdward K. Huang, Andrew D. Hood

Life of this patent

Estimating the term…

Loading patent…

Abstract

The present disclosure is directed generally to simultaneous dual-band systems and methods. A dual-band system as disclosed herein includes a plurality of pixels. Each pixel comprising a first absorber layer; a first intervening layer located adjacent the first absorber layer; a second absorber layer located adjacent to the first intervening layer; and a second intervening layer located adjacent to the second absorber layer. The plurality of pixels includes a first subset of pixels for detecting light in a first band and a second subset of pixels for detecting light in a second band. Carriers created in the first absorber layer of the first subset of pixels are collected via the first contact layer. Carriers created in the second absorber layer of the second subset of pixels are collected via the second contact layer and carriers created in the first absorber layer remain uncollected.

Claims20

Dependent claims

A dual-band imaging device comprising:

a plurality of pixels, wherein each of the plurality of pixels comprises:
a first absorber layer;
a first intervening layer located adjacent the first absorber layer;
a second absorber layer located adjacent to the first intervening layer;
and
a second intervening layer located adjacent to the second absorber layer;
wherein the plurality of pixels includes a first subset of pixels for detecting light in a first band and a second subset of pixels for detecting light in a second band,
the first subset of pixels comprising:
a first ground plane contact in contact with the first absorber layer;
and
a first contact layer in contact with the second absorber layer,
wherein carriers created in the first absorber layer are collected via the first contact layer;
the second subset of pixels comprising:
a second ground plane contact in contact with the second absorber layer;
and
a second contact layer in contact with the second intervening layer,
wherein carriers created in the second absorber layer are collected via the second contact layer and
wherein carriers created in the first absorber layer remain uncollected.

15 more elements

Dependencies are inferred from the claim text.

Facts

Application: 18/244,100Filed 8 Sep 2023 · us provisional application
Priority: 9 Sep 2022
Published: US 2024/0088194 A114 Mar 2024
Granted: 23 Jun 2026
Term ends: Not estimatedThe source records don’t support an estimate.

Classification4 codes

H10F 39/1825
Colour image sensors: multicolour image sensors having stacked structure, e.g. NPN, NPNPN or multiple quantum well [MQW] structures
H10F 39/011
Integrated devices, or assemblies of multiple devices, comprising at least one element covered by group H10F30/00, e.g. radiation detectors…:…
H10F 39/809
Constructional details of image sensors: of hybrid image sensors
H10F
Solar cells and light sensors