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A method based on electronic dynamic regulation to enhance heteromolecular doping of molybdenum disulfide

An electronic dynamic regulation, molybdenum disulfide technology, applied in molybdenum sulfide, nanotechnology for materials and surface science, analytical materials, etc., can solve the problems of uncontrollable degree and position of defect states and low flexibility, and achieve enhanced Physical and chemical adsorption capacity, strong adaptability, controllable effect of defect state degree and location

Active Publication Date: 2020-04-21
BEIJING INSTITUTE OF TECHNOLOGYGY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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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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  • A method based on electronic dynamic regulation to enhance heteromolecular doping of molybdenum disulfide
  • A method based on electronic dynamic regulation to enhance heteromolecular doping of molybdenum disulfide
  • A method based on electronic dynamic regulation to enhance heteromolecular doping of molybdenum disulfide

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Embodiment 1

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

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

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

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

[0034] (1.4) The energy of the femtosecond laser is adjusted to 0.01uJ by the neutral density attenuator; the pulse delay is adjusted to 0.1ps by the computer-controlled double-pulse generator; the movement of t...

Embodiment 2

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

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

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

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

[0042] (2.4) The energy of the femtosecond laser is adjusted to 0.01uJ by the neutral density attenuator; the pulse delay is adjusted to 5ps by the computer-controlled double-pulse generator; the six-dimensional p...

Embodiment 3

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

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

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

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

[0050] (3.4) The energy of the femtosecond laser is adjusted to 0.01uJ by the neutral density attenuator; the pulse delay is adjusted to 5ps by the computer-controlled double-pulse generator; the six-...

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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 molecular doping of molybdenum disulfide based on electronic dynamic regulation, and belongs 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 it is of great significance to control its intrinsic properties such as energy band structure. [0003] Currently, an effective method to tune the band structure of molybdenum disulfide is to dope molybdenum disulfide through atomic 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, while doping (chemical doping) molybdenum disulfide by charge transfer can be done by various heterogeneous ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
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