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Method for enhancing heterogeneous molecule-doped molybdenum disulfide based on electronic dynamic regulation

A technology of electronic dynamic control and molybdenum disulfide, applied in the direction of molybdenum sulfide, nanotechnology for materials and surface science, analytical materials, etc., can solve the problems of uncontrollable defect state degree and position, low flexibility, etc., and achieve enhanced Effects of physical and chemical adsorption capacity, strong adaptability, degree and position controllability of defect states

Active Publication Date: 2018-11-23
BEIJING INSTITUTE OF TECHNOLOGYGY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] In order to solve the existing problems of inducing molybdenum disulfide defect states to enhance the degree and position of defect states during the doping process of molybdenum disulfide by heteromolecules, uncontrollable thermal effects, low flexibility, etc., the invention discloses a method based on electronic dynamic control The technical problem to be solved by the method of enhancing heteromolecular doping of molybdenum disulfide is to realize the enhancement of heterogeneous molecular doping molybdenum disulfide based on electronic dynamic regulation, which has the advantages of controllable defect state degree and position, simple operation and flexibility.

Method used

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  • Method for enhancing heterogeneous molecule-doped molybdenum disulfide based on electronic dynamic regulation
  • Method for enhancing heterogeneous molecule-doped molybdenum disulfide based on electronic dynamic regulation
  • Method for enhancing heterogeneous molecule-doped molybdenum disulfide based on electronic dynamic regulation

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Embodiment 1

[0030] A method for enhancing heterogeneous doping of molybdenum disulfide based on electronic dynamic control disclosed in this embodiment, the specific steps are as follows:

[0031] (1.1) The femtosecond laser generates femtosecond laser, and the pulse form is single pulse.

[0032] (1.2) The laser beam enters the femtosecond laser double pulse generator based on the Michelson interferometer, and the femtosecond laser pulse sequence is obtained through time-domain shaping, and the energy ratio of the two sub-pulses is 1:1.

[0033] (1.3) Focus the femtosecond laser pulse sequence in (1.2) on the upper surface of the sample to be processed through the focusing objective lens to modify the material. The numerical aperture of the focusing objective used here is 0.5.

[0034] (1.4) Adjust the energy of the femtosecond laser to 0.01uJ through the neutral density attenuator; use the computer to control the double pulse generator to adjust the pulse delay to 0.1ps; use the comput...

Embodiment 2

[0038] A method for enhancing heterogeneous doping of molybdenum disulfide based on electronic dynamic control disclosed in this embodiment, the specific steps are as follows:

[0039] (2.1) The femtosecond laser generates femtosecond laser, and the pulse form is a single pulse.

[0040] (2.2) The laser beam enters the femtosecond laser double pulse generator based on the Michelson interferometer, and the femtosecond laser pulse sequence is obtained through time-domain shaping, and the energy ratio of the two sub-pulses is 1:1.

[0041] (2.3) Focus the femtosecond laser pulse sequence in (2.2) on the upper surface of the sample to be processed through the focusing objective lens to modify the material. The numerical aperture of the focusing objective used here is 0.5.

[0042] (2.4) Adjust the energy of the femtosecond laser to 0.01uJ through the neutral density attenuator; use the computer to control the double pulse generator to adjust the pulse delay to 5ps; use the computer...

Embodiment 3

[0046] A method for enhancing heterogeneous doping of molybdenum disulfide based on electronic dynamic control disclosed in this embodiment, the specific steps are as follows:

[0047] (3.1) The femtosecond laser generates femtosecond laser, and the pulse form is single pulse.

[0048] (3.2) The laser beam enters the femtosecond laser double pulse generator based on the Michelson interferometer, and the femtosecond laser pulse sequence is obtained through time-domain shaping, and the energy ratio of the two sub-pulses is 1:1.

[0049] (3.3) Focus the femtosecond laser pulse sequence in (3.2) on the upper surface of the sample to be processed through the focusing objective lens to modify the material. The value aperture of the focusing objective lens used here is 0.5.

[0050] (3.4) Adjust the energy of the femtosecond laser to 0.01uJ through the neutral density attenuator; use the computer to control the double pulse generator to adjust the pulse delay to 5ps; use the compute...

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Abstract

The invention discloses a method for enhancing heterogeneous molecule-doped molybdenum disulfide based on electronic dynamic regulation, and belongs to the field of micro-nano manufacturing. The method comprises the following steps of step 1, enabling a femtosecond laser pulse sequence to focus onto the single or multiple molybdenum disulfide layers at the surface of a substrate, controlling the processing parameters and processing location of the femtosecond laser pulse sequence, inducing the defect mode with controllable degree and location at the surface of the molybdenum disulfide meetingthe preset use requirements, and enabling the molybdenum disulfide with defect mode / active point to effectively adsorb oxygen in air under the air environment, so as to obtain the controllable oxygenmolecule P-doped single or multiple molybdenum disulfide layers; step 2, dripping an N-doped organic matter / inorganic matter / biological molecule solution onto the single molybdenum disulfide layer with defect mode / active point, and waiting for natural airing, so as to obtain the organic matter / inorganic matter / biological molecule N-doped single molybdenum disulfide layer. The method has the advantages that the degree and location of the defect mode are controllable, the operation is simple and flexible, and the like.

Description

technical field [0001] The invention relates to a method for enhancing heterogeneous molecule doping molybdenum disulfide based on electronic dynamic control, belonging to the field of micro-nano manufacturing. Background technique [0002] Molybdenum disulfide is a new graphene-like two-dimensional material, which has a wide range of applications in electronics, optoelectronics, sensing, photocatalysis and other fields, so the regulation of its intrinsic properties such as energy band structure is of great significance. [0003] At present, an effective method to tune the band structure of MoS2 is to dope MoS2 through atom exchange or charge transfer with heteromolecules. Among them, the method of doping molybdenum disulfide by single atom exchange is mainly to exchange with the same group of atoms of molybdenum and sulfur atoms, and doping (chemical doping) molybdenum disulfide by charge transfer can be done by various heterogeneous molecules. accomplish. The charge tran...

Claims

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Application Information

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IPC IPC(8): C01G39/06B23K26/0622B82Y30/00B82Y40/00G01N21/65
CPCB23K26/0622B82Y30/00B82Y40/00C01G39/06G01N21/658
Inventor 姜澜左佩李欣
Owner BEIJING INSTITUTE OF TECHNOLOGYGY
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