CN111807690A - Preparation method of photovoltaic glass - Google Patents
Preparation method of photovoltaic glass Download PDFInfo
- Publication number
- CN111807690A CN111807690A CN202010717272.9A CN202010717272A CN111807690A CN 111807690 A CN111807690 A CN 111807690A CN 202010717272 A CN202010717272 A CN 202010717272A CN 111807690 A CN111807690 A CN 111807690A
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- forming roller
- photovoltaic glass
- trapping layer
- light trapping
- cooling
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- 239000011521 glass Substances 0.000 title claims abstract description 74
- 238000002360 preparation method Methods 0.000 title claims abstract description 10
- 239000000758 substrate Substances 0.000 claims abstract description 29
- 238000010438 heat treatment Methods 0.000 claims abstract description 27
- 238000001816 cooling Methods 0.000 claims abstract description 23
- 229920003229 poly(methyl methacrylate) Polymers 0.000 claims abstract description 19
- 239000004926 polymethyl methacrylate Substances 0.000 claims abstract description 19
- 230000007246 mechanism Effects 0.000 claims abstract description 15
- 238000000034 method Methods 0.000 claims abstract description 14
- 238000005520 cutting process Methods 0.000 claims abstract description 7
- 238000002844 melting Methods 0.000 claims abstract description 6
- 230000008018 melting Effects 0.000 claims abstract description 6
- 238000007790 scraping Methods 0.000 claims abstract description 4
- 238000009966 trimming Methods 0.000 claims abstract description 4
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims description 14
- 239000000498 cooling water Substances 0.000 claims description 10
- 238000005507 spraying Methods 0.000 claims description 7
- 229910001873 dinitrogen Inorganic materials 0.000 claims description 6
- 239000012535 impurity Substances 0.000 claims description 6
- 238000003825 pressing Methods 0.000 claims description 6
- 238000002347 injection Methods 0.000 claims description 5
- 239000007924 injection Substances 0.000 claims description 5
- 239000000463 material Substances 0.000 claims description 5
- 239000004809 Teflon Substances 0.000 claims description 4
- 229920006362 Teflon® Polymers 0.000 claims description 4
- 238000000465 moulding Methods 0.000 claims description 4
- 239000007788 liquid Substances 0.000 claims description 3
- 238000010030 laminating Methods 0.000 abstract description 4
- 238000004519 manufacturing process Methods 0.000 abstract description 4
- 238000007493 shaping process Methods 0.000 description 15
- 229910052757 nitrogen Inorganic materials 0.000 description 4
- 239000005038 ethylene vinyl acetate Substances 0.000 description 3
- 229920001200 poly(ethylene-vinyl acetate) Polymers 0.000 description 3
- 238000007711 solidification Methods 0.000 description 3
- 230000008023 solidification Effects 0.000 description 3
- 239000007921 spray Substances 0.000 description 3
- 238000006243 chemical reaction Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000001746 injection moulding Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000007664 blowing Methods 0.000 description 1
- 235000019994 cava Nutrition 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000003754 machining Methods 0.000 description 1
- 238000010791 quenching Methods 0.000 description 1
- 230000000171 quenching effect Effects 0.000 description 1
Images
Classifications
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- C—CHEMISTRY; METALLURGY
- C03—GLASS; MINERAL OR SLAG WOOL
- C03B—MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES
- C03B29/00—Reheating glass products for softening or fusing their surfaces; Fire-polishing; Fusing of margins
- C03B29/04—Reheating glass products for softening or fusing their surfaces; Fire-polishing; Fusing of margins in a continuous way
- C03B29/06—Reheating glass products for softening or fusing their surfaces; Fire-polishing; Fusing of margins in a continuous way with horizontal displacement of the products
- C03B29/08—Glass sheets
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L31/00—Semiconductor devices sensitive to infrared radiation, light, electromagnetic radiation of shorter wavelength or corpuscular radiation and specially adapted either for the conversion of the energy of such radiation into electrical energy or for the control of electrical energy by such radiation; Processes or apparatus specially adapted for the manufacture or treatment thereof or of parts thereof; Details thereof
- H01L31/04—Semiconductor devices sensitive to infrared radiation, light, electromagnetic radiation of shorter wavelength or corpuscular radiation and specially adapted either for the conversion of the energy of such radiation into electrical energy or for the control of electrical energy by such radiation; Processes or apparatus specially adapted for the manufacture or treatment thereof or of parts thereof; Details thereof adapted as photovoltaic [PV] conversion devices
- H01L31/042—PV modules or arrays of single PV cells
- H01L31/048—Encapsulation of modules
- H01L31/0481—Encapsulation of modules characterised by the composition of the encapsulation material
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L31/00—Semiconductor devices sensitive to infrared radiation, light, electromagnetic radiation of shorter wavelength or corpuscular radiation and specially adapted either for the conversion of the energy of such radiation into electrical energy or for the control of electrical energy by such radiation; Processes or apparatus specially adapted for the manufacture or treatment thereof or of parts thereof; Details thereof
- H01L31/04—Semiconductor devices sensitive to infrared radiation, light, electromagnetic radiation of shorter wavelength or corpuscular radiation and specially adapted either for the conversion of the energy of such radiation into electrical energy or for the control of electrical energy by such radiation; Processes or apparatus specially adapted for the manufacture or treatment thereof or of parts thereof; Details thereof adapted as photovoltaic [PV] conversion devices
- H01L31/042—PV modules or arrays of single PV cells
- H01L31/048—Encapsulation of modules
- H01L31/0488—Double glass encapsulation, e.g. photovoltaic cells arranged between front and rear glass sheets
-
- C—CHEMISTRY; METALLURGY
- C03—GLASS; MINERAL OR SLAG WOOL
- C03B—MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES
- C03B2215/00—Press-moulding glass
- C03B2215/02—Press-mould materials
-
- C—CHEMISTRY; METALLURGY
- C03—GLASS; MINERAL OR SLAG WOOL
- C03B—MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES
- C03B2215/00—Press-moulding glass
- C03B2215/40—Product characteristics
- C03B2215/41—Profiled surfaces
-
- 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
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/50—Photovoltaic [PV] energy
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Physics & Mathematics (AREA)
- Condensed Matter Physics & Semiconductors (AREA)
- Electromagnetism (AREA)
- General Physics & Mathematics (AREA)
- Computer Hardware Design (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Power Engineering (AREA)
- Materials Engineering (AREA)
- Organic Chemistry (AREA)
- Photovoltaic Devices (AREA)
Abstract
The application relates to a preparation method of photovoltaic glass, which comprises the following operation steps: a. melting PMMA through heating equipment; b. uniformly feeding PMMA in a molten state onto a rotating forming roller, wherein a plurality of pointed protrusions are densely distributed on the outer circumferential wall of the forming roller, and scraping and cooling the PMMA in the molten state by a scraper to continuously pre-form a flaky light trapping layer; c. continuously conveying the glass substrate forwards through a conveying mechanism, and cooling the conveyed glass substrate in advance, wherein the temperature of the glass substrate is controlled to be 5-10 ℃; d. laminating the preformed light trapping layer on the glass substrate through a forming roller, separating the preformed light trapping layer from the forming roller, and rapidly cooling and curing the photovoltaic glass in the laminating process; e. and cutting and separating the cooled and solidified photovoltaic glass, and trimming the photovoltaic glass. The production efficiency of the preparation method of the photovoltaic glass is higher.
Description
Technical Field
The application relates to the technical field of solar cell modules, in particular to a preparation method of photovoltaic glass.
Background
The photovoltaic glass is one of components of a solar cell module, and has a great influence on the photoelectric conversion efficiency of the solar cell module. With the continuous development of the double-sided solar cell, in order to ensure the generated energy of the double-sided solar cell, the back plate used at the back of the solar cell module needs to be replaced by photovoltaic glass, so as to form a double-glass module consisting of front glass, front EVA (Ethylene-vinyl acetate copolymer), double-sided solar cell sheets, back EVA and back glass.
In order to enhance the energy conversion efficiency of a solar cell under weak light, the related photovoltaic glass at present is coated with a light trapping layer on a glass substrate, so that the reflection of a glass backboard to light is reduced. During manufacturing, a PMMA layer is placed on a glass substrate, the substrate is heated to soften the PMMA layer, and then film pressing is carried out to ensure that a plurality of fine recesses are densely distributed on the PMMA layer to form a light trapping layer.
Disclosure of Invention
In order to improve the processing efficiency of the photovoltaic glass, the application provides a preparation method of the photovoltaic glass.
The preparation method of the photovoltaic glass adopts the following technical scheme:
a. melting: melting PMMA through heating equipment;
b. preforming of the light trapping layer: uniformly feeding PMMA in a molten state onto a rotating forming roller, wherein a plurality of pointed protrusions are densely distributed on the outer circumferential wall of the forming roller, and scraping and cooling the PMMA in the molten state by a scraper to continuously pre-form a flaky light trapping layer;
c. cooling the glass substrate: continuously conveying the glass substrate forwards through a conveying mechanism, and cooling the conveyed glass substrate in advance, wherein the temperature of the glass substrate is controlled to be 5-10 ℃;
d. pressing and curing: laminating the preformed light trapping layer on the glass substrate through a forming roller, separating the preformed light trapping layer from the forming roller, and rapidly cooling and curing the photovoltaic glass in the laminating process;
e. cutting and separating; and cutting and separating the cooled and solidified photovoltaic glass, and trimming the photovoltaic glass.
Through adopting above-mentioned technical scheme, the light trapping layer is through the shaping gyro wheel shaping in advance, the light trapping layer at this moment is in incomplete solidification state, the one side of light trapping layer and shaping gyro wheel contact can be a plurality of caves of shaping, later laminate the glass substrate with the light trapping layer of preforming on, the glass substrate after the cooling can make the light trapping layer cool off rapidly with light trapping layer combination back, make one side cooling solidification that the light trapping layer is close to the glass substrate be in the same place with the glass substrate, such production method makes and can continuously carry out the operation, the machining efficiency of photovoltaic glass has been improved.
Preferably, the forming roller is a hollow roller, cooling water is arranged in the forming roller, the liquid level of the cooling water is lower than the axis of the forming roller, and the temperature of the cooling water is controlled to be 30-40 ℃.
Through adopting above-mentioned technical scheme, be equipped with the cooling water in the shaping gyro wheel, and not be full of whole shaping gyro wheel for the shaping gyro wheel reduces from lower down temperature gradually, and such structure can make the structure that the light trapping layer is close to shaping gyro wheel one side can slowly mould and design, makes the shaping of light trapping layer better, is difficult for taking place very big deformation after breaking away from with the shaping gyro wheel.
Preferably, the outer circumferential wall of the forming roller is provided with a teflon layer.
By adopting the technical scheme, the friction coefficient of the Teflon is extremely low, so that the light trapping layer and the forming roller are separated from each other more smoothly.
Preferably, a heating mechanism is arranged near the forming roller to heat the light trapping layer formed on the forming roller, and the heating temperature is 70-80 ℃.
Through adopting above-mentioned technical scheme, heat for flaky light trapping layer to the shaping, make light trapping layer keep away from one side of shaping gyro wheel better viscidity for both associativity are better when the pressfitting is to the glass substrate to light trapping layer, the glass of making.
Preferably, the forming roller before receiving the material is preheated by a heating mechanism, and the heating temperature is kept at 100-104 ℃.
Through adopting above-mentioned technical scheme, the shaping gyro wheel heats the shaping gyro wheel earlier before with the contact of fused PMMA for the phenomenon of quenching can not take place in the contact of fused PMMA and shaping gyro wheel, reduces the production of internal stress, makes the structural strength of the light trapping layer of producing bigger.
Preferably, the demolded forming roller is subjected to air injection impurity removal treatment.
Through adopting above-mentioned technical scheme, the sunken department of gyro wheel deposits impurity such as dust easily, and the impurity of sunken department can be got rid of in the edulcoration processing of blowing for impurity is difficult for sneaking into in the PMMA.
Preferably, the rapid cooling is carried out by spraying nitrogen gas at 5-8 ℃ in the cooling solidification process, and the spraying direction of the nitrogen gas is inclined towards the position where the light trapping layer is separated from the forming roller.
By adopting the technical scheme, the light trapping layer can be rapidly cooled by spraying nitrogen at 5-8 ℃, so that the light trapping layer can be cooled and solidified on the glass substrate, and meanwhile, the nitrogen can have a spraying force on the light trapping layer after being sprayed on the light trapping layer, so that the light trapping layer and the forming roller can be more smoothly demoulded.
Preferably, the photovoltaic glass is heated after being cooled and solidified, and the heating temperature is 100-104 ℃.
By adopting the technical scheme, the photovoltaic glass can generate internal stress in the process of rapid cooling, and the photovoltaic glass is heated after being cooled and solidified, so that the generation of the internal stress can be reduced, and the integral strength of the photovoltaic glass is improved.
In summary, the present application includes at least one of the following beneficial technical effects:
the photovoltaic glass preparation method can realize continuous operation, is high in working efficiency, and the photovoltaic glass obtained last time is stable in structure and long in service life.
Drawings
Fig. 1 is a schematic diagram of an embodiment of the present application.
Fig. 2 is a schematic structural diagram for illustrating a pointed protrusion according to an embodiment of the present application.
Description of reference numerals: 1. forming a roller; 2. a heating device; 3. a material scraping machine; 4. a pointed protrusion; 5. cooling the spray head; 6. a glass substrate; 7. a heating mechanism; 8. an air injection nozzle; 9. a conveying mechanism.
Detailed Description
The present application is described in further detail below with reference to figures 1-2.
The embodiment of the application discloses a preparation method of photovoltaic glass, which comprises the following operation steps with reference to fig. 1 and 2:
a. melting: the PMMA is melted through a heating device 2, and the heating device 2 adopts an injection molding machine;
b. preforming of the light trapping layer: the PMMA in a molten state coming out of the injection molding machine is uniformly fed onto a rotating molding roll 1, the molding roller 1 is preheated by a heating mechanism 7 at the position before the molding roller 1 receives the material, the heating temperature is always kept at 100-104 ℃ (the temperature can be selected as 100 ℃, 101 ℃ or 104 ℃), meanwhile, before the forming roller 1 receives the material, the outer surface of the forming roller is subjected to air injection impurity removal treatment through an air injection nozzle 8, a plurality of pointed protrusions 4 are densely distributed on the outer circumferential wall of the forming roller 1, the PMMA in the molten state is scraped by the scraper 3, the scraper 3 is an auxiliary roller, the PMMA in the molten state can cool the continuously preformed flaky light trapping layer when passing between the forming roller 1 and the auxiliary roller, the formed light trapping layer can be attached to the forming roller 1 and continuously rotates and cools along with the forming roller 1, and a plurality of pits can be formed on one side, close to the forming roller 1, of the light trapping layer;
c. cooling the inner side of the light trapping layer: the forming roller 1 is a hollow roller, cooling water is arranged in the forming roller 1, the liquid level of the cooling water is lower than the axis of the forming roller, the temperature of the cooling water is controlled to be 30-40 ℃ all the time (the temperature can be 30 ℃, 35 ℃ or 40 ℃), so that when the light trapping layer rotates from top to bottom, the temperature of the inner side of the light trapping layer can be gradually reduced, and the shape of the light trapping layer is fixed;
d. heating the outer side of the light trapping layer: the outside of the light trapping layer formed on the forming roller 1 is heated by a heating mechanism 7, and the heating temperature is always kept between 70 and 80 ℃ (the temperature can be 70 ℃, 75 ℃ or 80 ℃).
e. Cooling of the glass substrate 6: the glass substrate 6 is continuously conveyed forwards through the conveying mechanism 9 (the conveying mechanism 9 is a belt conveyor), nitrogen is sprayed in advance to cool the conveyed glass substrate 6, the temperature of the glass substrate 6 is controlled to be 5-10 ℃, the cooling spray head 5 is communicated with an air cooler, and the air cooler is communicated with a nitrogen generator;
f. pressing and curing: the preformed light trapping layer is pressed on the glass substrate 6 through the forming roller 1, the preformed light trapping layer is separated from the forming roller 1, the Teflon layer is arranged on the outer circumferential wall of the forming roller 1, the light trapping layer and the forming roller 1 can be smoothly demoulded, the photovoltaic glass is rapidly cooled and solidified in the pressing process, the cooling mode is that nitrogen gas at 5-8 ℃ is sprayed through a cooling spray head 5, and the spraying direction of the nitrogen gas is inclined towards the position where the light trapping layer is separated from the forming roller 1;
g. cutting and separating; and cutting and separating the cooled and solidified photovoltaic glass, and trimming the photovoltaic glass.
h. Integral heating: the photovoltaic glass is heated again by the heating mechanism 7 after being cooled and solidified, and the heating temperature is 100-104 ℃ (the temperature can be 100 ℃, 101 ℃ or 104 ℃).
The heating mechanisms 7 are all drying ovens.
The above embodiments are preferred embodiments of the present application, and the protection scope of the present application is not limited by the above embodiments, so: all equivalent changes made according to the structure, shape and principle of the present application shall be covered by the protection scope of the present application.
Claims (8)
1. The preparation method of the photovoltaic glass is characterized by comprising the following operation steps:
a. melting: melting PMMA through a heating device (2);
b. preforming of the light trapping layer: uniformly blanking PMMA in a molten state onto a rotating forming roller (1), wherein a plurality of pointed protrusions (4) are densely distributed on the outer circumferential wall of the forming roller (1), and scraping and cooling the PMMA in the molten state by a scraper (3) to continuously pre-form a flaky light trapping layer;
c. cooling the glass substrate (6): the glass substrate (6) is continuously conveyed forwards through the conveying mechanism (9), the conveyed glass substrate (6) is cooled in advance, and the temperature of the glass substrate (6) is controlled to be 5-10 ℃;
d. pressing and curing: the preformed light trapping layer is pressed on the glass substrate (6) through the forming roller (1), the preformed light trapping layer is separated from the forming roller (1), and the photovoltaic glass is rapidly cooled and solidified in the pressing process;
e. cutting and separating; and cutting and separating the cooled and solidified photovoltaic glass, and trimming the photovoltaic glass.
2. The method for preparing photovoltaic glass according to claim 1, wherein: the forming roller (1) is a hollow roller, cooling water is arranged in the forming roller (1), the liquid level of the cooling water is lower than the axis of the forming roller (1), and the temperature of the cooling water is controlled to be 30-40 ℃.
3. The method for preparing photovoltaic glass according to claim 2, wherein: the outer circumferential wall of the forming roller (1) is provided with a Teflon layer.
4. The method for preparing photovoltaic glass according to claim 3, wherein: a heating mechanism (7) is arranged near the forming roller (1) to heat the light trapping layer formed on the forming roller (1), and the heating temperature is 70-80 ℃.
5. The method for preparing photovoltaic glass according to claim 3, wherein: the molding roller (1) before material feeding is preheated by a heating mechanism (7), and the heating temperature is kept at 100-104 ℃.
6. The method for preparing photovoltaic glass according to claim 5, wherein: and (3) carrying out air injection impurity removal treatment on the demoulded forming roller (1).
7. The method for preparing photovoltaic glass according to claim 1, wherein: and in the cooling and solidifying process, the rapid cooling is carried out by spraying nitrogen gas at 5-8 ℃, and the spraying direction of the nitrogen gas is inclined towards the position where the light trapping layer is separated from the forming roller (1).
8. The method for preparing photovoltaic glass according to claim 1, wherein: and heating the photovoltaic glass after cooling and solidifying, wherein the heating temperature is 100-104 ℃.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010717272.9A CN111807690B (en) | 2020-07-23 | 2020-07-23 | Preparation method of photovoltaic glass |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010717272.9A CN111807690B (en) | 2020-07-23 | 2020-07-23 | Preparation method of photovoltaic glass |
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| Publication Number | Publication Date |
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| CN111807690A true CN111807690A (en) | 2020-10-23 |
| CN111807690B CN111807690B (en) | 2022-08-05 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202010717272.9A Active CN111807690B (en) | 2020-07-23 | 2020-07-23 | Preparation method of photovoltaic glass |
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Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| TW200905256A (en) * | 2007-07-27 | 2009-02-01 | Entire Technology Co Ltd | Forming method of light-diffusion structure in diffusion-film and its device |
| US20120043679A1 (en) * | 2010-08-17 | 2012-02-23 | Chi Mei Corporation | Method and device for making an optical plate formed with a microstructure |
| CN102385193A (en) * | 2011-11-15 | 2012-03-21 | 深圳市华星光电技术有限公司 | Coating method of liquid crystal alignment film for thin film transistor-liquid crystal display (TFT-LCD) |
| CN103770402A (en) * | 2012-10-17 | 2014-05-07 | 海洋王照明科技股份有限公司 | Transparent conductive glass and preparation method thereof |
| CN105470328A (en) * | 2014-09-05 | 2016-04-06 | 严世杰 | Independent light trap type photovoltaic glass |
| CN106426992A (en) * | 2016-09-22 | 2017-02-22 | 日氟荣高分子材料(上海)有限公司 | Plastic film with light trapping structure, and preparation method and application of plastic film |
| KR102004650B1 (en) * | 2018-02-28 | 2019-10-01 | 재단법인대구경북과학기술원 | Meta-material electrode in solar cell and method of preparing the same |
-
2020
- 2020-07-23 CN CN202010717272.9A patent/CN111807690B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| TW200905256A (en) * | 2007-07-27 | 2009-02-01 | Entire Technology Co Ltd | Forming method of light-diffusion structure in diffusion-film and its device |
| US20120043679A1 (en) * | 2010-08-17 | 2012-02-23 | Chi Mei Corporation | Method and device for making an optical plate formed with a microstructure |
| CN102385193A (en) * | 2011-11-15 | 2012-03-21 | 深圳市华星光电技术有限公司 | Coating method of liquid crystal alignment film for thin film transistor-liquid crystal display (TFT-LCD) |
| CN103770402A (en) * | 2012-10-17 | 2014-05-07 | 海洋王照明科技股份有限公司 | Transparent conductive glass and preparation method thereof |
| CN105470328A (en) * | 2014-09-05 | 2016-04-06 | 严世杰 | Independent light trap type photovoltaic glass |
| CN106426992A (en) * | 2016-09-22 | 2017-02-22 | 日氟荣高分子材料(上海)有限公司 | Plastic film with light trapping structure, and preparation method and application of plastic film |
| KR102004650B1 (en) * | 2018-02-28 | 2019-10-01 | 재단법인대구경북과학기술원 | Meta-material electrode in solar cell and method of preparing the same |
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| CN111807690B (en) | 2022-08-05 |
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Effective date of registration: 20220512 Address after: 510632 room 402, Nanhai building, Jinan University, No. 601, Huangpu Avenue West, Tianhe District, Guangzhou City, Guangdong Province Applicant after: Mai Yaohua Applicant after: Guangzhou Jinan University Science Park Management Co.,Ltd. Address before: 510632 No. 601, Whampoa Avenue, Guangzhou, Guangdong Applicant before: Jinan University |
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