High-performance image sensors including those providing global electronic shutter

Patent metadata

Field	Value
Publication number	US-10096730-B2
Application number	US-201715406696-A
Country	US
Kind code	B2
Filing date	Jan 14, 2017
Priority date	Jan 15, 2016
Publication date	Oct 9, 2018
Grant date	Oct 9, 2018

Abstract

In various embodiments, an electronic device comprises, for example, at least one photosensitive layer and at least one carrier selective layer. Under one range of biases on the device, the photosensitive layer produces a photocurrent while illuminated. Under another range of biases on the device, the photosensitive does not produce a photocurrent while illuminated. A carrier selective layer expands the range of biases over which the photosensitive layer does not produce any photocurrent while illuminated. In various embodiments, an electronic device comprises, for example, at least one photosensitive layer and at least one carrier selective layer. Under a first range of biases on the device, the photosensitive layer is configured to collect a photocurrent while illuminated. Under a second range of biases on the device, the photosensitive layer is configured to collect at least M times lower photocurrent while illuminated compared to under the first range of biases.

First claim

What is claimed is:

1. An electronic device, comprising:
at least one photosensitive layer; and
at least one carrier selective layer;
wherein, under a first range of biases on the electronic device, the at least one photosensitive layer is configured to collect a photocurrent while illuminated;
wherein, under a second range of biases on the electronic device, the at least one photosensitive layer is configured to collect at least M times lower photocurrent while illuminated compared to under the first range of biases, wherein M=100; and
wherein the at least one carrier selective layer includes one layer that is configured to collect electrons under the first range of biases and to collect holes under the second range of biases.

2. The electronic device of claim 1 , wherein the at least one carrier selective layer is configured to expand a voltage range corresponding to the second range of biases.

3. The electronic device of claim 1 , wherein the first range of biases is to exceed about 1 volt.

4. The electronic device of claim 1 , wherein the second range of biases is less than about 1 volt.

5. The electronic device of claim 1 , wherein M is greater than about 1,000.

6. The electronic device of claim 1 , wherein M is greater than about 10,000.

7. The electronic device of claim 1 , wherein M is greater than about 100,000.

8. The electronic device of claim 1 , wherein, under a range of illumination levels, an electrical bias across the electronic device remains substantially unchanged across an entire integration time.

9. The electronic device of claim 8 , wherein the electrical bias changes by less than about 0.2 volts.

10. The electronic device of claim 8 , wherein the range of illumination levels spans a range of about 0 lux to about 10 lux on pixel.

11. The electronic device of claim 1 , wherein another one of the at least one carrier selective layer is configured to collect electrons under the second range of biases.

Assignees

• Invisage Technologies Inc

Inventors

• Beiley Zachary Michael
• Sargent Edward Hartley

Classifications

• Y02E10/52

  PV systems with concentrators · CPC title

• H01L31/035218 Primary

  Electricity · mapped topic

• H01L31/1013

  Electricity · mapped topic

• H01L27/14643

  Electricity · mapped topic

• H01L31/118

  Electricity · mapped topic