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Device for detecting electromagnetic radiation

A detection device, a technology for electromagnetic radiation, applied in radiation control devices, circuits, electrical components, etc., can solve the problems of long and expensive supplementary development steps, etc.

Pending Publication Date: 2021-04-30
灵锐得
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] It is evident that when the actual implementation of the simulated detection device takes place, the performance obtained does not always agree with the simulated results, requiring lengthy and costly additional development steps

Method used

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  • Device for detecting electromagnetic radiation
  • Device for detecting electromagnetic radiation
  • Device for detecting electromagnetic radiation

Examples

Experimental program
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Embodiment Construction

[0025] Such as figure 1 As shown, the detection device 1 comprises an absorptive first stack 2 formed of one or more conductive and semiconductive layers arranged to collect at least in a first wavelength range and advantageously Electromagnetic radiation A in a second wavelength range different from the first wavelength range. The first wavelength range does not have any overlap with the second wavelength range.

[0026] The first stack 2 advantageously comprises an absorbing layer, also called absorbing material, configured to absorb incident radiation and convert the incident radiation into charge carriers forming electrical signals. The charge carriers generated as a result of the absorption of optical radiation are also called carrier photons. The absorbent material can be a II-VI material or a III-V material. The absorbing material may be selected from HgCdTe, InSb, InAsSb, InGaAs and InP. III-V material refers to one or more elements from column III (boron, gallium,...

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Abstract

The detecting device comprises an absorbent first stack (2) configured to absorb electromagnetic radiation in at least one first wavelength range and having a first coefficient of thermal expansion. It also comprises a second stack (3) that performs an optical function and that has a first coefficient of thermal expansion. The first coefficient of thermal expansion is different from the second coefficient of thermal expansion and in that it comprises a buffer layer (4) separating the first stack and the second stack. The buffer layer (4) has a thickness comprised between 0.5 [mu]m and 50 [mu]m so as to absorb mechanical stresses introduced by the first stack (2).

Description

technical field [0001] The invention relates to an electromagnetic radiation detection device. Background technique [0002] In order to detect one or more electromagnetic signals in a scene, a detection device is usually used. The detection device comprises multiple layers stacked on top of each other in order to perform the optical and electro-optical functions required to detect the observed signal. [0003] The detection device comprises conductive, electrically insulating and / or semiconducting layers assembled in order to collect electromagnetic radiation and guide the charges formed in the detection device to Output terminal for processed electrical signals. [0004] The detection device also includes a layer stack configured to eliminate at least a portion of the interfering optical signal, typically an optical filter that blocks electromagnetic radiation outside the wavelength range of interest. In addition to the filter function, there is usually one or more lens...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01L27/146
CPCH01L27/1462H01L27/14625H01L27/14665H01L27/1443H01L27/1446
Inventor N.佩雷-拉珀内
Owner 灵锐得