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SiC-based gallium oxide microwire photoelectric detector and preparation method thereof

A photodetector, gallium oxide technology, applied in circuits, electrical components, semiconductor devices, etc., can solve the problems of unfavorable integration of thin films, slow response speed, poor heat dissipation, etc., to achieve good ultraviolet light detection ability, good heat dissipation ability and High pressure resistance, the effect of making up for the lack of heat dissipation

Active Publication Date: 2021-10-26
ZHEJIANG XINKE SEMICON CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003]However, most of the existing gallium oxide is a thin film, which is not conducive to integration, and the existing gallium oxide detectors have the disadvantages of slow response speed and poor heat dissipation, which limit the Its application in related fields

Method used

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  • SiC-based gallium oxide microwire photoelectric detector and preparation method thereof
  • SiC-based gallium oxide microwire photoelectric detector and preparation method thereof
  • SiC-based gallium oxide microwire photoelectric detector and preparation method thereof

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Embodiment 1

[0049] figure 1 A schematic flow chart of a method for preparing a SiC-based gallium oxide microwire photodetector provided by an embodiment of the present invention, figure 2 A schematic structural diagram of a SiC-based gallium oxide microwire photodetector provided by an embodiment of the present invention. The invention provides a method for preparing a photodetector of a SiC-based gallium oxide micro-wire, the preparation method comprising the following steps:

[0050] Step 1, prepare gallium oxide (Ga 2 o 3 ) micron wire 1.

[0051] Step 1.1, cleaning the second substrate, the second substrate includes a Si substrate layer and SiO on the Si substrate layer 2 substrate layer.

[0052] Specifically, the second substrate is ultrasonically treated with acetone and isopropanol, and then the second substrate is cleaned with ozone ultraviolet or oxygen plasma.

[0053] In a specific embodiment, the second substrate is ultrasonically treated with acetone and isopropanol f...

Embodiment 2

[0082] See figure 2 , this embodiment provides a SiC-based gallium oxide micro-wire photodetector on the basis of the above embodiments, the photodetector includes:

[0083] The first substrate 2, the first substrate 2 includes n + SiC substrate layer 21 and located at n + n on the SiC substrate layer 21 - SiC substrate layer 22;

[0084] gallium oxide micro-wire 1, located on the first substrate 2;

[0085] The source electrode 3 and the drain electrode 4 are located on the first substrate 2 and located at both ends of the gallium oxide micro-wire 1;

[0086] The gate electrode 5 is located on the lower surface of the first substrate 2 .

[0087] The present invention prepares gallium oxide microwires on SiC, so that the prepared photodetector uses an epitaxial lightly doped SiC substrate layer as a photosensitive substrate, and produces a one-dimensional gallium oxide microwire and a three-dimensional SiC heterostructure , with better UV detection capability.

[0088...

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Abstract

The invention relates to a SiC-based gallium oxide microwire photoelectric detector and a preparation method thereof. The method comprises the following steps: preparing a gallium oxide microwire; transferring the gallium oxide microwires to a first substrate, and the first substrate comprising an n + SiC substrate layer and an n-SiC substrate layer located on the n + SiC substrate layer; carrying out annealing treatment on the gallium oxide microwires and the first substrate in inert gas; and preparing a source electrode and a drain electrode at two ends of the gallium oxide microwire. According to the invention, the gallium oxide microwires are prepared on SiC, so that the prepared photoelectric detector uses the epitaxial lightly-doped SiC substrate layer as the photosensitive substrate, a one-dimensional gallium oxide microwire and three-dimensional SiC heterostructure is prepared, and the photoelectric detector has good ultraviolet light detection capability.

Description

technical field [0001] The invention belongs to the technical field of semiconductor devices, and relates to a SiC-based gallium oxide micro-wire photodetector and a preparation method thereof. Background technique [0002] Photoelectric detection technology is one of the indispensable technologies in modern human life, especially the strong absorption of the atmospheric ozone layer makes this part of ultraviolet light in sunlight unable to reach the surface of the earth. Therefore, there are higher requirements for solar-blind detector detection, and gallium oxide microwires have a forbidden band width of 4.9eV, corresponding to the frequency band of the ultraviolet spectrum, which is a better candidate material for solar-blind ultraviolet detectors, while silicon carbide (SiC) is also a third-generation wide-bandgap semiconductor with excellent performance. It has a relatively large bandgap (3.3eV) and high ultraviolet light absorption rate, high breakdown electric field, ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01L31/18H01L31/024H01L31/0336H01L31/0352H01L31/0392H01L31/109
CPCH01L31/18H01L31/109H01L31/0336H01L31/0352H01L31/03921H01L31/024Y02P70/50
Inventor 李京波张帅赵艳汪争张龙周贝尔
Owner ZHEJIANG XINKE SEMICON CO LTD