Graphene and quantum dot co-doped polymer as well as preparation method and application thereof

A technology of quantum dots and graphene, which is applied in the field of polymers and preparations co-doped with graphene and quantum dots, can solve the problems of difficult change of luminescence band, high laser emission threshold, complex synthesis process, etc., and achieve broad commercialization prospects , low laser emission threshold, and simple synthesis process

Active Publication Date: 2021-07-13
WUYI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] Dye is a common laser gain medium. The disadvantages of dye-doped polymer random lasers are: high laser emission threshold and wide half-maximum full width; poor photostability and difficult to change the emission band; complex synthesis process, long production cycle and high cost

Method used

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  • Graphene and quantum dot co-doped polymer as well as preparation method and application thereof
  • Graphene and quantum dot co-doped polymer as well as preparation method and application thereof
  • Graphene and quantum dot co-doped polymer as well as preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0039] A polymer co-doped with graphene and quantum dots, prepared from the following components:

[0040]

[0041]

[0042] The polymer co-doped with graphene and quantum dots above is prepared by the following method:

[0043] (1) According to the above-mentioned parts by mass, polymethyl methacrylate and polymethyl methacrylate are blended to form a mixed solution;

[0044] (2) adding 5 parts by mass of ZnCdSeS / ZnS quantum dots into the mixed solution, stirring evenly to obtain solution A;

[0045] (3) The doping concentration of the polymer co-doped with graphene and quantum dots is: 1 part is added in the mixed solution A and stirred to obtain solution B;

[0046] (4) The solution B is cured by ultraviolet light with 200nm ultraviolet light for 6 seconds.

[0047] The stirring method in the above steps (2) and (3) is specifically: first use an ultrasonic instrument to sonicate for 4 hours, and then use a mechanical stirring method to stir for 5 hours.

[0048] Th...

Embodiment 2

[0051] A polymer co-doped with graphene and quantum dots, prepared from the following components:

[0052]

[0053] The polymer co-doped with graphene and quantum dots above is prepared by the following method:

[0054] (1) According to the above-mentioned parts by mass, polymethyl acrylate is blended with 2-hydroxy-methylphenyl propane-1 ketone to form a mixed solution;

[0055] (2) CsPbBr with 15 parts by mass 3 Add the perovskite quantum dots into the mixed solution and stir evenly to obtain solution A;

[0056](3) The doping concentration of the polymer co-doped with graphene and quantum dots is: 2 parts are added in the mixed solution A and stirred to obtain solution B;

[0057] (4) Use 365nm ultraviolet light to perform ultraviolet light curing on solution B for 5 seconds.

[0058] The stirring method in the above steps (2) and (3) is specifically: first use an ultrasonic instrument to sonicate for 1 hour, and then use a mechanical stirring method to stir for 2 hou...

Embodiment 3

[0062] A polymer co-doped with graphene and quantum dots, prepared from the following components:

[0063]

[0064] The polymer co-doped with graphene and quantum dots above is prepared by the following method:

[0065] (1) According to the above-mentioned parts by mass, polyaminoacrylate and benzoin dimethyl ether are blended to form a mixed solution;

[0066] (2) adding 5 parts by mass of ZnCdSeS / ZnS quantum dots into the mixed solution, stirring evenly to obtain solution A;

[0067] (3) The doping concentration of the polymer co-doped with graphene and quantum dots is: 3 parts are added in the mixed solution A, stirred to obtain solution B;

[0068] (4) The solution B is cured by ultraviolet light with 300nm ultraviolet light for 7 seconds.

[0069] The stirring method of the above-mentioned steps (2) and (3) is specifically as follows: first use an ultrasonic instrument to sonicate for 2 hours, and then use a mechanical stirring method to stir for 3 hours.

[0070] T...

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Abstract

The invention relates to a graphene and quantum dot co-doped polymer and a preparation method thereof. The graphene and quantum dot co-doped polymer is prepared from the following components: 1-3 parts of graphene; 5-15 parts of semiconductor quantum dots; 20-74 parts of a photosensitive polymer; and 1-5 parts of a photoinitiator. The invention also relates to a preparation method of the graphene and quantum dot co-doped polymer and application of the graphene and quantum dot co-doped polymer in a random laser. The graphene and quantum dot co-doped polymer disclosed by the invention is applied to a random laser and has relatively good light stability, and an emission wave band is easy to adjust; the laser emission threshold is low and the full width at half maximum is small; and the method has the advantages of simple synthesis process, short production period and low cost, and has wide commercialization prospects.

Description

technical field [0001] The invention belongs to the field of quantum dots, and in particular relates to a polymer co-doped with graphene and quantum dots, a preparation method and an application thereof. Background technique [0002] Laser technology has been widely used in many fields such as industry, medical treatment and communication. The core components of random lasers include three elements: pump source, working medium and resonant cavity. The resonant cavity selects the light with a certain frequency and the same direction as the most preferential amplification, and suppresses the light of other frequencies and directions to form a standing wave oscillation, and finally emits in the form of laser light. Random lasers use strong scattering, disordered, and non-periodic media as resonators, and have the characteristics of low threshold, small size, cavity-free structure, simple process, short preparation cycle, and low cost, making them suitable for photon integratio...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L33/12C08L33/08C08L33/14C08L75/14C08K3/04C08K3/30H01S3/102
CPCC08K3/042C08K3/30H01S3/102C08K2003/3036C08L33/12C08L33/08C08L33/14
Inventor 曹明轩张彦军王颖王志文杜大明乐庆胜
Owner WUYI UNIV
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