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Surface-enhanced Raman scattering substrate, preparation method and application thereof

A surface-enhanced Raman and Raman scattering technology, applied in the field of spectral detection, can solve the problems of poor stability and repeatability of Raman scattering substrates, and achieve the effects of high Raman activity, strong chemical enhancement, and low cost

Inactive Publication Date: 2020-11-06
SHENZHEN INST OF ADVANCED TECH
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] In view of the deficiencies in the prior art, the present invention provides a surface-enhanced Raman scattering substrate and a preparation method thereof to solve the problems of poor stability and repeatability of the existing surface-enhanced Raman scattering substrate

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  • Surface-enhanced Raman scattering substrate, preparation method and application thereof
  • Surface-enhanced Raman scattering substrate, preparation method and application thereof
  • Surface-enhanced Raman scattering substrate, preparation method and application thereof

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Embodiment Construction

[0038] In order to make the object, technical solution and advantages of the present invention clearer, the specific implementation manners of the present invention will be described in detail below in conjunction with the accompanying drawings. Examples of these preferred embodiments are illustrated in the accompanying drawings. The embodiments of the invention shown in and described with reference to the drawings are merely exemplary, and the invention is not limited to these embodiments.

[0039] Here, it should also be noted that, in order to avoid obscuring the present invention due to unnecessary details, only the structures and / or processing steps that are closely related to the solution according to the present invention are shown in the drawings, while those related to the present invention are omitted. Other details are not relevant to the invention.

[0040] As mentioned above, the existing use of noble metal (gold, silver, copper, etc.) The disordered structure, ...

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Abstract

The invention provides a surface-enhanced Raman scattering substrate, which comprises: a supporting substrate, a semiconductor nanosheet array vertically growing on the supporting substrate, and a noble metal layer deposited on the semiconductor nanosheet array. The invention further provides a preparation method of the surface-enhanced Raman scattering substrate, and application of the surface-enhanced Raman scattering substrate in detection of Raman signals of a to-be-detected object. According to the invention, the detection function layer comprises a semiconductor-metal heterojunction structure composed of a semiconductor nanosheet array and a precious metal layer, and the semiconductor-metal heterojunction structure not only has a physical enhancement effect, but also has a relativelystrong chemical enhancement effect, so that the structure has very high surface enhanced Raman activity, and has very high stability and repeatability.

Description

technical field [0001] The invention belongs to the technical field of spectrum detection, and in particular relates to a surface-enhanced Raman scattering substrate and a preparation method and application thereof. Background technique [0002] The Surface-Enhanced Raman Scattering (SERS) effect refers to that when the laser of a suitable frequency irradiates the surface of noble metal nanoparticles, the plasmon resonance on the surface of noble metal nanoparticles will be excited, causing the electromagnetic field to be enhanced. When in an enhanced electromagnetic field, its Raman scattering signal will be enhanced by a million times or even higher. It is a non-destructive, label-free, high-sensitivity, near-field effect analysis and detection method, which is widely used in biology, chemistry, environment and other fields. . As a molecular spectral fingerprint identification method, compared with other traditional detection methods, SERS has the advantages of rapidity, ...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N21/65
CPCG01N21/658
Inventor 徐国良李威威陈明杨春雷
Owner SHENZHEN INST OF ADVANCED TECH
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