CN111558171A - Phototherapy device and method for manufacturing carbon quantum dots - Google Patents
Phototherapy device and method for manufacturing carbon quantum dots Download PDFInfo
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- CN111558171A CN111558171A CN202010421478.7A CN202010421478A CN111558171A CN 111558171 A CN111558171 A CN 111558171A CN 202010421478 A CN202010421478 A CN 202010421478A CN 111558171 A CN111558171 A CN 111558171A
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- 238000001126 phototherapy Methods 0.000 title claims abstract description 38
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 11
- 238000000034 method Methods 0.000 title abstract description 9
- 239000002096 quantum dot Substances 0.000 claims abstract description 48
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- 229910001385 heavy metal Inorganic materials 0.000 claims abstract description 10
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- 238000004806 packaging method and process Methods 0.000 claims abstract description 4
- 239000003638 chemical reducing agent Substances 0.000 claims description 13
- 239000000463 material Substances 0.000 claims description 13
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- 238000005538 encapsulation Methods 0.000 claims description 9
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- PAYRUJLWNCNPSJ-UHFFFAOYSA-N Aniline Chemical compound NC1=CC=CC=C1 PAYRUJLWNCNPSJ-UHFFFAOYSA-N 0.000 claims description 8
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 claims description 8
- 229920000642 polymer Polymers 0.000 claims description 8
- 125000001997 phenyl group Chemical group [H]C1=C([H])C([H])=C(*)C([H])=C1[H] 0.000 claims description 7
- 230000009471 action Effects 0.000 claims description 6
- QGLWBTPVKHMVHM-KTKRTIGZSA-N (z)-octadec-9-en-1-amine Chemical compound CCCCCCCC\C=C/CCCCCCCCN QGLWBTPVKHMVHM-KTKRTIGZSA-N 0.000 claims description 4
- PIICEJLVQHRZGT-UHFFFAOYSA-N Ethylenediamine Chemical compound NCCN PIICEJLVQHRZGT-UHFFFAOYSA-N 0.000 claims description 4
- 125000002887 hydroxy group Chemical group [H]O* 0.000 claims description 4
- NLJMYIDDQXHKNR-UHFFFAOYSA-K sodium citrate Chemical compound O.O.[Na+].[Na+].[Na+].[O-]C(=O)CC(O)(CC([O-])=O)C([O-])=O NLJMYIDDQXHKNR-UHFFFAOYSA-K 0.000 claims description 4
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L33/00—Semiconductor devices having potential barriers specially adapted for light emission; Processes or apparatus specially adapted for the manufacture or treatment thereof or of parts thereof; Details thereof
- H01L33/48—Semiconductor devices having potential barriers specially adapted for light emission; Processes or apparatus specially adapted for the manufacture or treatment thereof or of parts thereof; Details thereof characterised by the semiconductor body packages
- H01L33/50—Wavelength conversion elements
- H01L33/501—Wavelength conversion elements characterised by the materials, e.g. binder
- H01L33/502—Wavelength conversion materials
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61N—ELECTROTHERAPY; MAGNETOTHERAPY; RADIATION THERAPY; ULTRASOUND THERAPY
- A61N5/00—Radiation therapy
- A61N5/06—Radiation therapy using light
- A61N5/0613—Apparatus adapted for a specific treatment
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61N—ELECTROTHERAPY; MAGNETOTHERAPY; RADIATION THERAPY; ULTRASOUND THERAPY
- A61N5/00—Radiation therapy
- A61N5/06—Radiation therapy using light
- A61N2005/0635—Radiation therapy using light characterised by the body area to be irradiated
- A61N2005/0643—Applicators, probes irradiating specific body areas in close proximity
- A61N2005/0645—Applicators worn by the patient
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61N—ELECTROTHERAPY; MAGNETOTHERAPY; RADIATION THERAPY; ULTRASOUND THERAPY
- A61N5/00—Radiation therapy
- A61N5/06—Radiation therapy using light
- A61N2005/065—Light sources therefor
- A61N2005/0651—Diodes
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L2933/00—Details relating to devices covered by the group H01L33/00 but not provided for in its subgroups
- H01L2933/0008—Processes
- H01L2933/0033—Processes relating to semiconductor body packages
- H01L2933/0041—Processes relating to semiconductor body packages relating to wavelength conversion elements
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
- Y02P70/50—Manufacturing or production processes characterised by the final manufactured product
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- Microelectronics & Electronic Packaging (AREA)
- General Health & Medical Sciences (AREA)
- Radiology & Medical Imaging (AREA)
- Life Sciences & Earth Sciences (AREA)
- Animal Behavior & Ethology (AREA)
- Nuclear Medicine, Radiotherapy & Molecular Imaging (AREA)
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Abstract
The application discloses a phototherapy device and a method for manufacturing carbon quantum dots. This phototherapy device includes: the flexible substrate, the backplate, quantum dot electroluminescent device, packaging layer and flexible overburden, quantum dot electroluminescent device includes the carbon quantum dot of undoped heavy metal material. According to the technical scheme provided by the embodiment of the application, the carbon quantum dots which are not doped with the heavy metal materials are adopted in the quantum dot electroluminescent device, so that the potential safety hazard problem caused by heavy metals in the existing phototherapy device can be solved.
Description
Technical Field
The present disclosure relates generally to the field of phototherapy, and more particularly to a phototherapy device and a method of manufacturing carbon quantum dots.
Background
Phototherapy, a method for preventing or treating diseases by using sunlight or artificial light to promote rehabilitation of human body, was first initiated by Niels Finsen, and thus he received 1903 s prize of nobel's physiology and medicine. Light therapy can be used to treat a wide range of conditions, for example: skin disorders, neonatal jaundice, tumors, and the like. Phototherapy equipment which emits light with designed wavelength according to different disease requirements of users and can completely fit the skin of the users is required by modern phototherapy.
In response to this problem, many solutions have been proposed, such as using an LED light source to install a chemical fiber material, but this method can only emit optical fibers of 600-; the invention adjusts the spectrum by controlling the photoluminescence lightening of different quantum dots, but has certain potential safety hazard when heavy metal is used for carrying out the treatment of clinging to the skin.
Disclosure of Invention
In view of the above-mentioned drawbacks and deficiencies of the prior art, it is desirable to provide a phototherapy device and a method for manufacturing carbon quantum dots that eliminate safety hazards.
In a first aspect, there is provided a phototherapy device comprising: the flexible substrate, the backplate, quantum dot electroluminescent device, packaging layer and flexible overburden, quantum dot electroluminescent device includes the carbon quantum dot of undoped heavy metal material.
In some embodiments, the carbon quantum dots comprise aromatic compounds, the benzene ring of which carries a free radical, the free radical being any one of a hydroxyl group, a nitro group, an amino group, and a mercapto group.
In some embodiments, the carbon quantum dots further comprise a polymer semiconductor material comprising G-C3N4。
In some embodiments, the carbon quantum dots further comprise a thiol prepolymer.
In some embodiments, a side of the quantum dot electroluminescent device near the encapsulation layer is provided with a photonic crystal structure.
In some embodiments, the quantum dots include red, blue, green, and infrared quantum dots.
In some embodiments, a flexible battery is further included, the flexible battery being located on a side of the substrate facing away from the backplane.
In some embodiments, a flexible battery includes a flexible substrate, a first electrode layer, an active layer, a second electrode layer, and a flexible encapsulation layer.
In a second aspect, a method for manufacturing a carbon quantum dot is provided, which comprises the steps of,
respectively forming carbon quantum dots capable of emitting different colors of light by using a solvothermal method aromatic compound and ethanol under the action of a reducing agent;
the carbon quantum dots, the thiol prepolymer and the polymer semiconductor material are doped to form the carbon quantum dots with tensile properties.
In some embodiments, the reducing agent comprises aniline, ethylenediamine, oleylamine, or sodium citrate.
According to the technical scheme provided by the embodiment of the application, the carbon quantum dots which are not doped with the heavy metal materials are adopted in the quantum dot electroluminescent device, so that the potential safety hazard problem caused by heavy metals in the existing phototherapy device can be solved. Furthermore, according to some embodiments of the present application, the photonic crystal structure is disposed on a side of the quantum dot electroluminescent device close to the encapsulation layer, so that the light extraction rate of the quantum dot electroluminescent device can be improved, and the light extraction bands are screened, so as to obtain the effect of light emitted in the same direction and narrow bands.
Drawings
Other features, objects and advantages of the present application will become more apparent upon reading of the following detailed description of non-limiting embodiments thereof, made with reference to the accompanying drawings in which:
fig. 1 illustrates an exemplary block diagram of a phototherapy device according to an embodiment of the present application;
FIG. 2 shows an exemplary structural schematic of an aromatic compound according to an embodiment of the present application;
fig. 3 shows an exemplary block diagram of a phototherapy apparatus according to another embodiment of the present application;
fig. 4 shows an exemplary schematic diagram of another state of the phototherapy apparatus of the embodiment of fig. 3;
FIG. 5 illustrates an exemplary block diagram of a flexible power supply according to an embodiment of the present application;
fig. 6 shows an exemplary flow diagram of a method of manufacturing quantum dots according to an embodiment of the present application;
fig. 7 shows a schematic diagram of the fabrication of corresponding quantum dots under the action of different reducing agents according to an embodiment of the present application.
Detailed Description
The present application will be described in further detail with reference to the following drawings and examples. It is to be understood that the specific embodiments described herein are merely illustrative of the relevant invention and not restrictive of the invention. It should be noted that, for convenience of description, only the portions related to the present invention are shown in the drawings.
Unless defined otherwise, technical or scientific terms used herein shall have the ordinary meaning as understood by one of ordinary skill in the art to which this invention belongs. The use of "first," "second," and similar terms in this disclosure is not intended to indicate any order, quantity, or importance, but rather is used to distinguish one element from another. The word "comprising" or "comprises", and the like, means that the element or item listed before the word covers the element or item listed after the word and its equivalents, but does not exclude other elements or items. The terms "connected" or "coupled" and the like are not restricted to physical or mechanical connections, but may include electrical connections, whether direct or indirect. "upper", "lower", "left", "right", and the like are used merely to indicate relative positional relationships, and when the absolute position of the object being described is changed, the relative positional relationships may also be changed accordingly.
It should be noted that the embodiments and features of the embodiments in the present application may be combined with each other without conflict. The present application will be described in detail below with reference to the embodiments with reference to the attached drawings.
Referring to fig. 1, a structure diagram of a phototherapy device is shown. A phototherapy device comprising: the flexible substrate 102, the back plate 103, the quantum dot electroluminescent device 104, the packaging layer 107 and the flexible cover layer 108, wherein the quantum dot electroluminescent device 104 comprises carbon quantum dots not doped with heavy metal materials.
The flexible substrate 102 and the flexible cover layer 108 may be made of polyimide, and the backplane is provided with a driving circuit for driving the quantum dot electroluminescent device 104. The whole structure of the phototherapy device has excellent flexibility, so that the fitting performance with the skin is improved, and the comfort level in phototherapy is guaranteed. And the carbon quantum dots which are not doped with heavy metal materials are adopted, so that the safety is improved.
In some embodiments, the carbon quantum dots comprise aromatic compounds having a benzene ring with a radical X, which may be any one of hydroxyl, nitro, amino, and thiol. Specifically, a schematic diagram of the structure of an aromatic compound is given in fig. 2. The aromatic compound comprises two benzene rings, wherein one benzene ring carries two free radicals X, and the free radicals X can be any one of hydroxyl, nitro, amino and sulfydryl. The position of the radical may be ortho, meta or para, and the radical of FIG. 2 is ortho. It is understood that the quantum dots are named as carbon quantum dots because of the carbon on the aromatic benzene ring. In addition, the number of benzene rings and the number and positions of radicals may be set according to application scenarios, and are not limited herein.
In some embodiments, the carbon quantum dots further comprise a polymer semiconductor material comprising G-C3N4. In order to improve the tensile property of the carbon quantum dots, the aromatic compound in FIG. 2 is doped with a polymer semiconductor material G-C3N4. The polymer semiconductor material can also be other materials which can improve the tensile property of the carbon quantum dots. Therefore, after the improvement, each layer forming the phototherapy device has the stretching performance, so that the attaching performance of the phototherapy device is improved, and the phototherapy device is convenient to attach to the skin of a human body.
In some embodiments, the carbon quantum dots further comprise a thiol prepolymer. The thiol prepolymer can be HS (CH)2)YSH, wherein Y may be any natural number between 8 and 18. Under the action of the thiol prepolymer, the carbon quantum dots have steric hindrance effect. The mercaptan prepolymer is coated on the surface of the carbon quantum dot by regulating and controlling the matching of the length of the carbon chain and the carbon quantum dot with different particle sizes to form steric hindrance, so that the carbon quantum dot has the steric hindrance effect and is not easy to agglomerate or generate pi-pi interaction between surfaces.
In some embodiments, a side of the quantum dot electroluminescent device near the encapsulation layer is provided with a photonic crystal structure 106. The photonic crystal structure 106 may be a periodic structure of alternating materials of different refractive indices, such as a periodic arrangement of low refractive index materials on a high refractive index material. The distances between the periodically arranged low refractive index points are the same, so that the photonic crystal with a certain distance only generates the energy band effect on the light wave with a certain frequency, and the light with a certain frequency can be forbidden to propagate in the photonic crystal with a certain periodic distance. Therefore, through setting the expected periodic distance, the light required in the quantum dot electroluminescent device is emitted to the outside after passing through the photonic crystal, and other light rays are confined in the photonic crystal, so that the light extraction rate of the quantum dot electroluminescent device can be improved, the light extraction wave band can be screened, and the light emitted in the narrow wave band and the same direction can be obtained. In addition, a planarization layer 105 is disposed between the photonic crystal structure and the quantum dot electroluminescent device.
In some embodiments, the quantum dots include red quantum dots 104-1, blue quantum dots 104-2, green quantum dots 104-3, and infrared quantum dots 104-4. Wherein the red light emitted by the red light quantum dots 104-1 can be used for cosmetic phototherapy to improve fine lines and wrinkles; blue light emitted by the blue light quantum dots 104-2 and green light emitted by the green light quantum dots 102-3 can be used for treating neonatal jaundice; the white light emitted by the combination of the red light quantum dots 104-1, the blue light quantum dots 104-2 and the green light quantum dots 10-3 can be used for treating circadian rhythm and seasonal affective disorder, and the white light phototherapy in the early morning is helpful for adjusting circadian rhythm and seasonal affective depression symptoms in seasons or regions with less sunlight. In addition, red light emitted by red light quantum dots 104-1 and/or infrared light emitted by infrared light quantum dots 104-4 in combination can be used for wound healing and cosmetic phototherapy, for which red to infrared stimulation can produce and reconstitute collagen.
As shown in fig. 1, in some embodiments, a flexible battery 200 is further included, and the flexible battery 200 is located on a side of the substrate 102 facing away from the backplate 103. This flexible battery 200 adopts flexible film battery, can buckle or crooked for whole phototherapy device can be along with shining human different positions and crooked, as shown in fig. 3, sets up connecting portion 301 in phototherapy device main part 100's both sides. When the back needs to be irradiated, the back is unfolded and attached to the back of the human body, or, as shown in fig. 4, when the leg needs to be irradiated, the leg is wrapped by the connecting part which connects the two sides and is bent to form a cylindrical shape to be irradiated. It is understood that the phototherapy device body 100 herein is a light emitting body of a stacked structure including a battery as shown in fig. 1.
As shown in fig. 5, the flexible battery 200 includes a flexible substrate 201, a first electrode layer 202, an active layer 203, a second electrode layer 204, and a flexible encapsulation layer 205. The flexible battery may be a flexible solar battery, and includes a flexible substrate 201, a first electrode layer 202, an active layer 203, a second electrode layer 204, and a flexible encapsulation layer 205. The flexible substrate 201 and the flexible encapsulation layer 205 may be made of polyimide. The active layer 203 may be any structure that converts light energy into electrical energy, such as a crystalline silicon cell or the like.
Referring to fig. 6, the present application further discloses a method for manufacturing a carbon quantum dot, comprising the following steps:
step S101: forming carbon quantum dots capable of emitting different light rays by using an aromatic compound and ethanol under the action of a reducing agent through a solvothermal method;
step S102: the carbon quantum dots, the thiol prepolymer and the polymer semiconductor material are doped to form the carbon quantum dots with tensile properties.
In step S101, a mixture of an aromatic compound, ethanol and a reducing agent is heated to 180 degrees by a solvothermal method, and under the action of different reducing agents, red light quantum dots, blue light quantum dots, green light quantum dots or infrared light quantum dots are respectively generated.
In step S102, the thiol prepolymer and the polymer semiconductor material are doped into the carbon quantum dots generated in step S101, and the carbon quantum dots having tensile properties and steric hindrance effects are formed using a method such as heating or ultraviolet irradiation.
In some embodiments, the reducing agent comprises aniline, ethylenediamine, oleylamine, or sodium citrate. Specifically, as shown in fig. 7, when the reducing agent 11 added in step S101 is sodium citrate, after a heating process for 1 hour, red light quantum dots 104-1 are formed; when the added reducing agent 11 is aniline, blue light quantum dots 104-2 are formed after a heating process of 4 hours; when the added reducing agent 13 is ethylenediamine, a green light quantum dot 104-3 is formed after a heating process for 9 hours; when the added reducing agent 14 is oleylamine, infrared quantum dots 104-4 are formed after a heating process for 12 hours.
The above description is only a preferred embodiment of the application and is illustrative of the principles of the technology employed. It will be appreciated by a person skilled in the art that the scope of the invention as referred to in the present application is not limited to the embodiments with a specific combination of the above-mentioned features, but also covers other embodiments with any combination of the above-mentioned features or their equivalents without departing from the inventive concept. For example, the above features may be replaced with (but not limited to) features having similar functions disclosed in the present application.
Claims (10)
1. A phototherapy device, comprising: the flexible substrate, the backplate, quantum dot electroluminescent device, packaging layer and flexible overburden, quantum dot electroluminescent device includes the carbon quantum dot of undoped heavy metal material.
2. The phototherapy device as claimed in claim 1, wherein the carbon quantum dots comprise aromatic compounds having benzene rings with free radicals, the free radicals being any one of hydroxyl, nitro, amino and thiol groups.
3. The phototherapy device of claim 2, wherein the carbon quantum dots further comprise a polymeric semiconductor material comprising G-C3N4。
4. The phototherapy device of claim 3, wherein the carbon quantum dots further comprise a thiol prepolymer.
5. The phototherapy device of claim 1, wherein a side of the quantum dot electroluminescent device proximate to the encapsulation layer is provided with a photonic crystal structure.
6. The phototherapy device of claim 1, wherein the quantum dots include red, blue, green and infrared quantum dots.
7. The phototherapy device of claim 1, further comprising a flexible battery located on a side of the substrate facing away from the backboard.
8. The phototherapy device of claim 7, wherein the flexible battery includes a flexible substrate, a first electrode layer, an active layer, a second electrode layer, and a flexible encapsulation layer.
9. A method for producing a carbon quantum dot,
respectively forming carbon quantum dots capable of emitting different colors of light by using a solvothermal method aromatic compound and ethanol under the action of a reducing agent;
the carbon quantum dots, the thiol prepolymer and the polymer semiconductor material are doped to form the carbon quantum dots with tensile properties.
10. The method for producing a carbon quantum dot according to claim 9, wherein the reducing agent includes aniline, ethylenediamine, oleylamine, or sodium citrate.
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