KR101941112B1 - Transparent sheet for light module, method for manufacturing the same and light module comprising the same - Google Patents
Transparent sheet for light module, method for manufacturing the same and light module comprising the same Download PDFInfo
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- KR101941112B1 KR101941112B1 KR1020150080787A KR20150080787A KR101941112B1 KR 101941112 B1 KR101941112 B1 KR 101941112B1 KR 1020150080787 A KR1020150080787 A KR 1020150080787A KR 20150080787 A KR20150080787 A KR 20150080787A KR 101941112 B1 KR101941112 B1 KR 101941112B1
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- 229910052777 Praseodymium Inorganic materials 0.000 description 1
- OFOBLEOULBTSOW-UHFFFAOYSA-N Propanedioic acid Natural products OC(=O)CC(O)=O OFOBLEOULBTSOW-UHFFFAOYSA-N 0.000 description 1
- 229910004283 SiO 4 Inorganic materials 0.000 description 1
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- 244000028419 Styrax benzoin Species 0.000 description 1
- 235000000126 Styrax benzoin Nutrition 0.000 description 1
- 235000008411 Sumatra benzointree Nutrition 0.000 description 1
- 229910052771 Terbium Inorganic materials 0.000 description 1
- ATJFFYVFTNAWJD-UHFFFAOYSA-N Tin Chemical compound [Sn] ATJFFYVFTNAWJD-UHFFFAOYSA-N 0.000 description 1
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 description 1
- ZJCCRDAZUWHFQH-UHFFFAOYSA-N Trimethylolpropane Chemical compound CCC(CO)(CO)CO ZJCCRDAZUWHFQH-UHFFFAOYSA-N 0.000 description 1
- FYAMXEPQQLNQDM-UHFFFAOYSA-N Tris(1-aziridinyl)phosphine oxide Chemical compound C1CN1P(N1CC1)(=O)N1CC1 FYAMXEPQQLNQDM-UHFFFAOYSA-N 0.000 description 1
- XSQUKJJJFZCRTK-UHFFFAOYSA-N Urea Chemical compound NC(N)=O XSQUKJJJFZCRTK-UHFFFAOYSA-N 0.000 description 1
- HCHKCACWOHOZIP-UHFFFAOYSA-N Zinc Chemical compound [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 description 1
- 125000003342 alkenyl group Chemical group 0.000 description 1
- 125000004183 alkoxy alkyl group Chemical group 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 239000002518 antifoaming agent Substances 0.000 description 1
- 229910052787 antimony Inorganic materials 0.000 description 1
- WATWJIUSRGPENY-UHFFFAOYSA-N antimony atom Chemical compound [Sb] WATWJIUSRGPENY-UHFFFAOYSA-N 0.000 description 1
- 230000003078 antioxidant effect Effects 0.000 description 1
- FFBZKUHRIXKOSY-UHFFFAOYSA-N aziridine-1-carboxamide Chemical compound NC(=O)N1CC1 FFBZKUHRIXKOSY-UHFFFAOYSA-N 0.000 description 1
- LFYJSSARVMHQJB-QIXNEVBVSA-N bakuchiol Chemical compound CC(C)=CCC[C@@](C)(C=C)\C=C\C1=CC=C(O)C=C1 LFYJSSARVMHQJB-QIXNEVBVSA-N 0.000 description 1
- 229960002130 benzoin Drugs 0.000 description 1
- QRUDEWIWKLJBPS-UHFFFAOYSA-N benzotriazole Chemical compound C1=CC=C2N[N][N]C2=C1 QRUDEWIWKLJBPS-UHFFFAOYSA-N 0.000 description 1
- 239000012964 benzotriazole Substances 0.000 description 1
- 125000001797 benzyl group Chemical group [H]C1=C([H])C([H])=C(C([H])=C1[H])C([H])([H])* 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 239000004305 biphenyl Substances 0.000 description 1
- MQDJYUACMFCOFT-UHFFFAOYSA-N bis[2-(1-hydroxycyclohexyl)phenyl]methanone Chemical compound C=1C=CC=C(C(=O)C=2C(=CC=CC=2)C2(O)CCCCC2)C=1C1(O)CCCCC1 MQDJYUACMFCOFT-UHFFFAOYSA-N 0.000 description 1
- 238000012662 bulk polymerization Methods 0.000 description 1
- CQEYYJKEWSMYFG-UHFFFAOYSA-N butyl acrylate Chemical group CCCCOC(=O)C=C CQEYYJKEWSMYFG-UHFFFAOYSA-N 0.000 description 1
- 239000011203 carbon fibre reinforced carbon Substances 0.000 description 1
- BVKZGUZCCUSVTD-UHFFFAOYSA-N carbonic acid Chemical compound OC(O)=O BVKZGUZCCUSVTD-UHFFFAOYSA-N 0.000 description 1
- 239000007795 chemical reaction product Substances 0.000 description 1
- 238000006757 chemical reactions by type Methods 0.000 description 1
- 239000003086 colorant Substances 0.000 description 1
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- 238000003851 corona treatment Methods 0.000 description 1
- 229910021419 crystalline silicon Inorganic materials 0.000 description 1
- 150000007973 cyanuric acids Chemical class 0.000 description 1
- 125000000753 cycloalkyl group Chemical group 0.000 description 1
- 125000001559 cyclopropyl group Chemical group [H]C1([H])C([H])([H])C1([H])* 0.000 description 1
- ISRJTGUYHVPAOR-UHFFFAOYSA-N dihydrodicyclopentadienyl acrylate Chemical compound C1CC2C3C(OC(=O)C=C)C=CC3C1C2 ISRJTGUYHVPAOR-UHFFFAOYSA-N 0.000 description 1
- 238000010790 dilution Methods 0.000 description 1
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- 238000007720 emulsion polymerization reaction Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000003912 environmental pollution Methods 0.000 description 1
- VIBDJEWPNNCFQO-UHFFFAOYSA-N ethane-1,1,2-triol Chemical compound OCC(O)O VIBDJEWPNNCFQO-UHFFFAOYSA-N 0.000 description 1
- FKIRSCKRJJUCNI-UHFFFAOYSA-N ethyl 7-bromo-1h-indole-2-carboxylate Chemical compound C1=CC(Br)=C2NC(C(=O)OCC)=CC2=C1 FKIRSCKRJJUCNI-UHFFFAOYSA-N 0.000 description 1
- XYIBRDXRRQCHLP-UHFFFAOYSA-N ethyl acetoacetate Chemical compound CCOC(=O)CC(C)=O XYIBRDXRRQCHLP-UHFFFAOYSA-N 0.000 description 1
- 125000001495 ethyl group Chemical group [H]C([H])([H])C([H])([H])* 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 239000000945 filler Substances 0.000 description 1
- 229910052731 fluorine Inorganic materials 0.000 description 1
- 239000011737 fluorine Substances 0.000 description 1
- 238000010528 free radical solution polymerization reaction Methods 0.000 description 1
- 230000004927 fusion Effects 0.000 description 1
- 235000019382 gum benzoic Nutrition 0.000 description 1
- 239000012760 heat stabilizer Substances 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
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- XMBWDFGMSWQBCA-UHFFFAOYSA-N hydrogen iodide Chemical class I XMBWDFGMSWQBCA-UHFFFAOYSA-N 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 239000011256 inorganic filler Substances 0.000 description 1
- 229910003475 inorganic filler Inorganic materials 0.000 description 1
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- 125000000959 isobutyl group Chemical group [H]C([H])([H])C([H])(C([H])([H])[H])C([H])([H])* 0.000 description 1
- 125000001449 isopropyl group Chemical group [H]C([H])([H])C([H])(*)C([H])([H])[H] 0.000 description 1
- 238000010030 laminating Methods 0.000 description 1
- 150000007517 lewis acids Chemical class 0.000 description 1
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- 229910052749 magnesium Inorganic materials 0.000 description 1
- 239000011777 magnesium Substances 0.000 description 1
- VZCYOOQTPOCHFL-UPHRSURJSA-N maleic acid Chemical compound OC(=O)\C=C/C(O)=O VZCYOOQTPOCHFL-UPHRSURJSA-N 0.000 description 1
- 239000011976 maleic acid Substances 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 229910044991 metal oxide Inorganic materials 0.000 description 1
- 150000004706 metal oxides Chemical class 0.000 description 1
- 125000002496 methyl group Chemical group [H]C([H])([H])* 0.000 description 1
- LVHBHZANLOWSRM-UHFFFAOYSA-N methylenebutanedioic acid Natural products OC(=O)CC(=C)C(O)=O LVHBHZANLOWSRM-UHFFFAOYSA-N 0.000 description 1
- WYOXPIKARMAQFM-UHFFFAOYSA-N n,n,n',n'-tetrakis(oxiran-2-ylmethyl)ethane-1,2-diamine Chemical compound C1OC1CN(CC1OC1)CCN(CC1OC1)CC1CO1 WYOXPIKARMAQFM-UHFFFAOYSA-N 0.000 description 1
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- YLGYACDQVQQZSW-UHFFFAOYSA-N n,n-dimethylprop-2-enamide Chemical compound CN(C)C(=O)C=C YLGYACDQVQQZSW-UHFFFAOYSA-N 0.000 description 1
- UUORTJUPDJJXST-UHFFFAOYSA-N n-(2-hydroxyethyl)prop-2-enamide Chemical compound OCCNC(=O)C=C UUORTJUPDJJXST-UHFFFAOYSA-N 0.000 description 1
- ZQXSMRAEXCEDJD-UHFFFAOYSA-N n-ethenylformamide Chemical compound C=CNC=O ZQXSMRAEXCEDJD-UHFFFAOYSA-N 0.000 description 1
- 125000004123 n-propyl group Chemical group [H]C([H])([H])C([H])([H])C([H])([H])* 0.000 description 1
- TWNQGVIAIRXVLR-UHFFFAOYSA-N oxo(oxoalumanyloxy)alumane Chemical compound O=[Al]O[Al]=O TWNQGVIAIRXVLR-UHFFFAOYSA-N 0.000 description 1
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- 239000003504 photosensitizing agent Substances 0.000 description 1
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- UOMUPDCRXJLVGR-UHFFFAOYSA-N propane-1,2,2-triol Chemical compound CC(O)(O)CO UOMUPDCRXJLVGR-UHFFFAOYSA-N 0.000 description 1
- NHARPDSAXCBDDR-UHFFFAOYSA-N propyl 2-methylprop-2-enoate Chemical compound CCCOC(=O)C(C)=C NHARPDSAXCBDDR-UHFFFAOYSA-N 0.000 description 1
- 150000003254 radicals Chemical class 0.000 description 1
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- SJMYWORNLPSJQO-UHFFFAOYSA-N tert-butyl 2-methylprop-2-enoate Chemical group CC(=C)C(=O)OC(C)(C)C SJMYWORNLPSJQO-UHFFFAOYSA-N 0.000 description 1
- 238000010998 test method Methods 0.000 description 1
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- 229910052718 tin Inorganic materials 0.000 description 1
- 239000011135 tin Substances 0.000 description 1
- 239000010936 titanium Substances 0.000 description 1
- 229910052719 titanium Inorganic materials 0.000 description 1
- DVKJHBMWWAPEIU-UHFFFAOYSA-N toluene 2,4-diisocyanate Chemical compound CC1=CC=C(N=C=O)C=C1N=C=O DVKJHBMWWAPEIU-UHFFFAOYSA-N 0.000 description 1
- VZCYOOQTPOCHFL-UHFFFAOYSA-N trans-butenedioic acid Natural products OC(=O)C=CC(O)=O VZCYOOQTPOCHFL-UHFFFAOYSA-N 0.000 description 1
- 229910052720 vanadium Inorganic materials 0.000 description 1
- GPPXJZIENCGNKB-UHFFFAOYSA-N vanadium Chemical compound [V]#[V] GPPXJZIENCGNKB-UHFFFAOYSA-N 0.000 description 1
- KAKZBPTYRLMSJV-UHFFFAOYSA-N vinyl-ethylene Natural products C=CC=C KAKZBPTYRLMSJV-UHFFFAOYSA-N 0.000 description 1
- 229910052725 zinc Inorganic materials 0.000 description 1
- 239000011701 zinc Substances 0.000 description 1
- 239000011787 zinc oxide Substances 0.000 description 1
Images
Classifications
-
- 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
- H01L31/054—Optical elements directly associated or integrated with the PV cell, e.g. light-reflecting means or light-concentrating means
- H01L31/055—Optical elements directly associated or integrated with the PV cell, e.g. light-reflecting means or light-concentrating means where light is absorbed and re-emitted at a different wavelength by the optical element directly associated or integrated with the PV cell, e.g. by using luminescent material, fluorescent concentrators or up-conversion arrangements
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B27/00—Layered products comprising a layer of synthetic resin
- B32B27/30—Layered products comprising a layer of synthetic resin comprising vinyl (co)polymers; comprising acrylic (co)polymers
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B5/00—Optical elements other than lenses
- G02B5/20—Filters
- G02B5/208—Filters for use with infrared or ultraviolet radiation, e.g. for separating visible light from infrared and/or ultraviolet radiation
-
- 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
- H01L31/049—Protective back sheets
-
- 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
- Y02E10/52—PV systems with concentrators
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Condensed Matter Physics & Semiconductors (AREA)
- Electromagnetism (AREA)
- Engineering & Computer Science (AREA)
- Computer Hardware Design (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Power Engineering (AREA)
- Health & Medical Sciences (AREA)
- Toxicology (AREA)
- Optics & Photonics (AREA)
- Laminated Bodies (AREA)
Abstract
The present invention relates to a transparent sheet for an optical module, a method of manufacturing the same and an optical module, and more particularly, to a transparent sheet for an optical module capable of improving the weather resistance and power generation efficiency of the optical module, will be. INDUSTRIAL APPLICABILITY The transparent sheet or optical module for an optical module of the present invention has excellent surface hardness and high light transmittance and simultaneously emits the light of the absorbed short wavelength region to a wavelength of a region with high reaction sensitivity to a solar cell and the like, And at the same time has an effect of improving.
Description
The present invention relates to a transparent sheet for an optical module, a method of manufacturing the same and an optical module, and more particularly, to a transparent sheet for an optical module capable of improving the weather resistance and power generation efficiency of the optical module, will be.
In recent years, interest in renewable energy and clean energy has increased due to global environmental problems and depletion of fossil fuels. Among them, energy using light is attracting attention as a representative pollution-free energy source that can solve environmental pollution problem and fossil fuel depletion problem. Particularly, photovoltaic cells such as solar cells are rapidly spreading in residential and industrial fields.
Photovoltaic cells are devices that convert sunlight to electrical energy, which typically require long exposure to the external environment to easily absorb sunlight, so that various packaging to protect the internal components is performed, And these units are generally referred to as optical modules.
Most optical modules, for example, optical modules such as a solar cell module, include a front member (glass or front sheet) for protecting internal components (e.g., a solar cell) back sheet.
Generally, in the case of a solar cell module, the solar cell module has a structure in which a transparent front member on which light is incident, an encapsulant layer in which a plurality of solar cell cells are encapsulated, and a back sheet are sequentially laminated. As the transparent front member, a tempered glass or a front sheet is mainly used. The plurality of solar cells are electrically connected to each other, and are packed and sealed by the sealing material layer. For example, Korean Patent No. 10-1022820 and Korean Patent Laid-open No. 10-2011-0020227 disclose the above-mentioned techniques.
The solar cell module is required to have a long life without a reduction in output over a long period of time. For the longevity improvement, the front and back sheets must be able to block water and oxygen which adversely affect the solar cell, and can prevent deterioration due to ultraviolet (UV) rays or the like.
Particularly, in the case of a front sheet positioned directly on the front surface of a solar cell module and directly receiving sunlight, a high light transmittance is required for high power generation efficiency. Further, since the front sheet is exposed to the outside for a long period of time, high weather resistance is required, and in particular, excellent ultraviolet shielding ability is required. When ultraviolet rays are transmitted, the weatherability of the solar cell as well as the front sheet itself is deteriorated.
For this purpose, in most cases, ultraviolet absorbers are used for ultraviolet ray shielding. For example, Japanese Unexamined Patent Application Publication No. 2006-255927 discloses a transparent protective film for a solar cell using an organic ultraviolet absorber such as benzotriazole, and Korean Patent Publication No. 10-2011-0029096 discloses a transparent protective film for zinc oxide (Front sheet) for a solar cell using a light emitting diode (LED).
When the ultraviolet absorber is used as described above, the weather resistance can be improved. However, when the ultraviolet absorber is used alone as in the prior art, there is a problem that it is difficult to show a high power generation efficiency.
Therefore, it is necessary to develop a technology capable of effectively shielding ultraviolet rays while at the same time minimizing the loss of weatherability and at the same time improving the power generation efficiency of solar cells.
Accordingly, it is an object of the present invention to provide an improved transparent sheet for an optical module, a method of manufacturing the same, and an optical module.
More specifically, the present invention relates to an ultraviolet ray curable resin composition which is excellent in surface hardness and has weather resistance through ultraviolet absorber and absorbs a short wavelength of reaction sensitivity to a solar cell or the like through a wavelength conversion material, And to provide a transparent sheet for an optical module, a method of manufacturing the same, and an optical module that can improve power generation efficiency of a solar cell or the like.
According to the present invention,
UV curable monomers or oligomers; And an ultraviolet barrier layer formed by curing a composition comprising an ultraviolet absorber, and
UV curable monomers or oligomers; And a wavelength conversion material formed by curing a composition including a wavelength conversion material that converts a wavelength absorbed from light to a wavelength higher than the absorbed wavelength,
Wherein the ultraviolet blocking layer and / or the surface of the wavelength conversion layer has a pencil hardness of not less than 1H.
The present invention also relates to
UV curable monomers or oligomers; And forming an ultraviolet barrier layer on one side of the substrate using a composition comprising an ultraviolet absorber, and
UV curable monomers or oligomers; And forming a wavelength conversion layer on the other side of the substrate using a composition including a wavelength conversion material that converts a wavelength absorbed from light to a wavelength higher than the absorbed wavelength
The present invention also provides a method of manufacturing a transparent sheet for an optical module.
The present invention also relates to
Front member;
An encapsulant layer formed on the front member and encapsulating the solar cell; And
And a back sheet formed on the sealing material layer,
And at least one selected from the front member and the back sheet comprises the transparent sheet.
According to the present invention, it is possible to provide an improved transparent sheet for an optical module, a method of manufacturing the same, and an optical module. Specifically, the transparent sheet or optical module for an optical module of the present invention has an excellent surface hardness and a high light transmittance, and at the same time, emits the light of the short wavelength region absorbed to a wavelength of a region with high reaction sensitivity to a solar cell, And the efficiency is simultaneously improved.
1 is a sectional view of a transparent sheet for an optical module according to an embodiment of the present invention.
2 is a cross-sectional view of an optical module according to an embodiment of the present invention.
3 is a cross-sectional view of an optical module according to another embodiment of the present invention.
4 is a graph of absorptivity according to the wavelength of the reactive ultraviolet absorber RUVA93.
FIG. 5 is a graph showing luminescence spectra of a wavelength conversion material, Lumogen F Violet 570, and FIG. 6 is a graph showing luminescence spectra results of Lumogen F Yellow 083.
FIG. 7 shows a luminescence spectra result of Lumogen F Orange 240, which is a wavelength conversion material, and FIG. 8 is a graph showing a luminescence spectra result of Lumogen F Red 305.
9 to 13 are graphs showing absorption and emission peaks according to wavelengths of a transparent sheet for an optical module according to Examples and Comparative Examples of the present invention.
DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, embodiments of the present invention will be described with reference to the accompanying drawings. The accompanying drawings are provided to aid in understanding the present invention. In the accompanying drawings, the thickness may be enlarged to clearly show each region, and the scope of the present invention is not limited by the thickness, size, and ratio shown in the drawings. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS In the following description of the present invention, a detailed description of known functions and configurations incorporated herein will be omitted.
In the present specification, "and / or" is used to mean including at least one of the front and rear components. In the present invention, terms such as " first "and" second "are used to distinguish one element from another, and each element is not limited by the terms.
In this specification, the terms "formed on the surface "," formed on one side ", "formed on both sides" and the like do not mean only that the constituent elements are laminated in direct contact with each other, It also includes the meaning that further elements are formed. For example, "formed on the surface" means that the second component is formed directly on the surface of the first component, as well as the third component, between the first component and the second component, Lt; / RTI > can be further formed.
As used herein, the term "resin " refers to all polymerizable compounds having reactivity and may include, for example, monomers, oligomers, prepolymers, and the like. In addition, the term "(meth) acrylate" as used herein may be understood to include acrylate and methacrylate.
As used herein, the unit "weight" may refer to the ratio of the weight between each component.
Fig. 1 shows a transparent sheet for an optical module (hereinafter abbreviated as "transparent sheet") according to an exemplary embodiment to which the composition of the present invention is applied. The
The transparent sheet of the present invention is characterized in that the pencil hardness of the surface of the ultraviolet blocking layer (12) and / or the wavelength conversion layer (13) is not less than 1H. In the present invention, the pencil hardness is measured in accordance with the pencil drawing value described in the test method prescribed in JIS K5600-5-4, and a load of 500 g is applied to the
The
Fig. 1 illustrates an example in which the
The laminated structure of the
Further, in the present invention, the
Hereinafter, an exemplary embodiment of each component constituting the
The
The
The
In addition, an inorganic vapor deposition layer may be formed on one side or both sides of the
The thickness of the
The
The
The wavelength conversion layer (13) comprises at least an ultraviolet curable monomer or oligomer; And a wavelength converting material that converts the wavelength absorbed from the light to a wavelength higher than the absorbed wavelength is formed by curing. The surface hardness of the ultraviolet
The ultraviolet curable monomer or oligomer contained in the composition for forming the
For example, the UV-curable monomer may comprise a polyfunctional (meth) acrylate-based compound. The polyfunctional (meth) acrylate compounds include, but are not limited to, trimethylolpropane triacrylate, trimethylolpropane triacrylate, trimethylolpropaneethoxy triacrylate, glycerin propoxylated triacrylate, pentaerythritol triacrylate, Acrylate, dipentaerythritol tetraacrylate, dipentaerythritol hexaacrylate, urethane acrylate, ester acrylate, dipentaerythritol triacrylate, dipentaerythritol hexaacrylate, dipentaerythritol tetraacrylate, , Epoxy acrylate, ether acrylate, and ethylene oxide (EO) modified compounds thereof, and the like. From the viewpoint of improving the surface hardness of the transparent sheet, a compound having a large number of functional groups per molecular weight such as pentaerythritol triacrylate or dipentaerythritol tetraacrylate is preferable.
The ultraviolet absorber of the present invention is not particularly limited as long as it absorbs ultraviolet rays to have an ultraviolet shielding function. For example, the ultraviolet absorber may be selected from materials capable of absorbing an ultraviolet wavelength of about 400 nm or less, more specifically about 100 to 400 nm, and may be selected from, for example, organic, inorganic or reactive ultraviolet absorbers . Among these, a reactive ultraviolet absorber having a reactive group capable of copolymerizing with the ultraviolet curable monomer and / or oligomer is preferable.
By using a reactive ultraviolet absorber having a reactive group capable of copolymerizing with the ultraviolet curable monomer and / or oligomer, the ultraviolet curable monomer and / or oligomer; And the ultraviolet absorber can be increased to have a higher light transmittance and a lower haze value to ensure physical properties such as transparency and at the same time to enhance ultraviolet shielding ability and to secure properties such as weather resistance .
In one embodiment, the ultraviolet absorber may be a compound represented by the following formula (1).
[Chemical Formula 1]
In
R 2 is hydrogen, an alkyl group having 1 to 6 carbon atoms, or an aryl group;
R 3 represents R 4 -R 5 -R 6 ,
R 4 represents a single bond or oxygen,
R 5 represents a single bond or represents - (CH 2 ) m O-, -CH (CH 3 ) CH 2 O-, -CH 2 CH (CH 3 ) O-, - (CH 2 ) m OCH 2 - CH (CH 3) CH 2 OCH 2 -, and -CH 2 CH (CH 3) OCH 2 - represents one selected from the group consisting of,
R 6 represents an acryloyl group, a methacryloyl group, a styrene group or a vinyl group,
n and m each independently represent an integer of 1 to 4;
In
R 3 represents R 4 -R 5 -R 6 , R 4 represents a single bond, R 5 represents - (CH 2 ) m O-, R 6 represents an acryloyl group or a methacryloyl group,
m represents an integer of 1 to 3;
In one embodiment, the ultraviolet absorber may be 2- (2'-hydroxy-5'-methacryloxyethylphenyl) -2H-benzotriazole.
In one embodiment, the composition forming the ultraviolet barrier layer may comprise 0.1 to 30 parts by weight of the ultraviolet absorber per 100 parts by weight of the ultraviolet curable monomer or oligomer. When the amount of the ultraviolet absorber is less than 0.1 part by weight, the ultraviolet absorbing ability depending on the content thereof may be insignificant. If it exceeds 30 parts by weight, for example, it may not be preferable because of the mechanical properties and transparency of the
Meanwhile, in the present invention, the wavelength conversion material included in the composition for forming the wavelength conversion layer is not limited as long as it is a material that converts the wavelength absorbed from light (e.g., sunlight) to a wavelength higher than the absorbed wavelength . Specifically, the wavelength converting material is not particularly limited as long as it absorbs a wavelength (short wavelength) of a predetermined region and is capable of converting the absorbed wavelength (short wavelength) into a wavelength (long wavelength) higher than that and emitting the wavelength. In one example, the wavelength converting material can be selected from materials that absorb wavelengths below 600 nm and convert to wavelengths above 400 nm. The wavelength converting material may be, for example, a material that absorbs a wavelength of about 100 nm to 600 nm and converts it to a wavelength of about 400 nm to 1200 nm, or a material that absorbs a wavelength of about 300 nm to 600 nm and converts the wavelength to about 400 nm to 800 nm . In general, most solar cells are sensitive to wavelengths from about 400 nm to 1,200 nm. Accordingly, the solar cell mainly absorbs light in the wavelength range and generates electricity. Therefore, it is difficult to show high power generation efficiency due to low sensitivity of solar cell in short wavelength. Particularly in the case of a crystalline silicon solar cell or the like. In addition, the sensitivity of the solar cell increases as it goes to a longer wavelength even within the above wavelength range. At this time, a high reaction sensitivity means that the light of the corresponding wavelength is absorbed at a high absorption rate, which means that the power generation efficiency is increased eventually. In addition, high efficiency is not obtained because the wavelength is high, and most solar cells exhibit high efficiency in a wavelength range of about 400 nm to 1200 nm or about 400 nm to 800 nm.
Accordingly, when the wavelength conversion material is included, the weatherability of the solar cell is improved and the power generation efficiency is improved. Specifically, ultraviolet rays are absorbed by the wavelength converting material, and deterioration of the
On the other hand, when the wavelength conversion material is converted into a wavelength that is too high, the temperature may increase, which may be undesirable. That is, when the conversion rate to the infrared wavelength is high, the temperature of the solar cell C or the installation structure (electronic device, etc.) around the module can be increased. Accordingly, it is preferable that the wavelength converting material is selected from a substance capable of converting a wavelength of visible light to a wavelength of near infrared rays (about 800 nm or less) and emitting a large amount of visible light.
Further, in one embodiment, the wavelength converting material may be selected from a material that absorbs a wavelength not overlapping with an absorption wavelength of the ultraviolet absorbing agent. In the present invention, the fact that the absorption wavelength of the ultraviolet absorbing agent does not overlap with the absorption wavelength of the wavelength converting material means that the range of the absorption wavelength of the ultraviolet absorbing agent and the absorption wavelength range of the wavelength converting material are not completely equal. The range of the absorption wavelength of the ultraviolet absorber is limited to a range in which the substrate is not damaged and the wavelength of the other range is absorbed by using the wavelength converting material so that damage of the substrate is prevented and light in a wide wavelength range can be absorbed have.
According to a more specific embodiment, the ultraviolet absorber absorbs ultraviolet light having a wavelength in the range of 200 to 400 nm, and the wavelength converting material has a wavelength not overlapping with the absorption wavelength of the ultraviolet absorber, for example, 300 to 600 nm And may be selected from materials that absorb wavelengths.
In one embodiment, the wavelength converting material may include at least one selected from fluorescent materials such as a naphthalimide-based compound, a metal-organic compound, and a perylene-based compound. These wavelength converting materials are useful in the present invention by converting absorbed light into visible light wavelengths.
Examples of the naphthalimide-based compound include naphthalimide, 4,5-dimethyloxy-N- (2-ethylhexyl) naphthalimide, N- (2-ethyl hexyl) naphthalimide) and derivatives thereof. Also, for example, Lumogen F Violet 570 [4,5-dimethyloxy-N- (2-ethylhexyl) naphthalimide] and / Or
Examples of the perylene compound include perylene, isobutyl 4,10-dicyanoperylene-3,9-dicarboxylate, -dicarboxylate, perylene-3,4,9,11-tetracarboxylic acid bis- (2 ', 6'-diisopropylanilide) ', 6'-diixopropylanilide), perylene-1,8,7,12-tetraphenoxy-3,4,9,10-tetracarboxylic acid bis- (2', 6'-diisopropylanilide) perylene-1,8,7,12-tetraphenoxy-3,4,9,10-tetracarboylic acid bis- (2 ', 6'-diisopropylanilide) and its derivatives. Also, for example, Lumogen F Yellow 083 [Isobutyl 4,10-dicyanoperylene-3,9-dicarboxylate], Lumogen F Orange 240 [perylene-3, 4, 9, Tetracarboxylic acid bis- (2 ', 6'-diisopropylanilide)), Lumogen F Red (2', 6'-diisopropylanilide) 305 [perylene-1,8,7,12-tetra Tetra-carboxylic acid bis- (2 ', 6'-diisopropylanilide) (perylene-1,8,7,12-tetraphenoxy-3,4,9,10 -tetracarboxylic acid bis- (2 ', 6'-diisopropylanilide))], Lumogen F Green 850 and / or Lumogen F Yellow 170 may be used.
Further, the metal-organic composite may be a metal-organic composite having at least one metallic element, which may be selected from a metal-organic composite containing, for example, a rare earth element as a metallic element. The wavelength conversion material may include a compound represented by the following formula (2) as a metal-organic composite.
(2)
In Formula 2, M is a rare earth element. In the above formula (2), the rare earth element M may be selected from, for example, Eu, La, Ce, Pr, Nd, Gd, Tb, Dy and Lu. In Formula 2, n is an integer of 1 or more. The upper limit value of n is not limited, but may be, for example, 100 or less. In Formula 2, n may be, for example, 1 to 500, 1 to 200, 1 to 100, or 1 to 50.
In one embodiment, M in Formula 2 may be Eu. Specifically, the wavelength converting material may include a compound represented by the following formula (3) as a metal-organic composite. In the following formula (3), n is as described in formula (2).
(3)
The wavelength converting material as described above has a high light absorbing ability and absorbs a short wavelength (600 nm or less, 100 nm to 600 nm or 300 nm to 600 nm) to produce a long wavelength (400 nm or more, 400 nm to 1200 nm, 400 nm to 800 nm), which is useful in the present invention.
On the other hand, an inorganic material can be considered as a wavelength conversion material. Specifically, as the inorganic fluorescent pigments such as La 2 O 2 S: Eu or (Ba, Sr) 2 SiO 4 : consider the metal oxide such as Eu. However, all of which are light absorption capacity and the wavelength conversion efficiency is low, The absorbed light can be converted into light of a too high wavelength (infrared ray). In contrast, among the wavelength conversion materials listed above, naphthalimide-based compounds and metal-organic complexes (for example, compounds represented by Chemical Formulas 2 and 3) have a short wavelength (600 nm or less, (300 nm to 600 nm), and the wavelength absorbed is converted into a long wavelength (400 nm or more, 400 nm to 1200 nm, or 400 nm to 800 nm) in a range of high response sensitivity to a solar cell or the like, ultimately improving the power generation efficiency of a solar cell .
In one embodiment, the ultraviolet absorber comprises an ultraviolet absorber of
In the present invention, the wavelength conversion material may be in a particulate form. At this time, the wavelength converting material may have an average particle size of, for example, 1 nm to 2 탆, 5 nm to 1 탆, or 10 nm to 500 nm in consideration of the compatibility with the resin and the surface properties of the coating.
The composition for forming the wavelength conversion layer may contain 0.1 to 30 parts by weight of a wavelength conversion material based on 100 parts by weight of the ultraviolet curable monomer or oligomer. At this time, when the wavelength converting material is less than 0.1 part by weight, ultraviolet absorption and wavelength conversion efficiency depending on its content may be insignificant. If it exceeds 30 parts by weight, for example, it may not be preferable because of the mechanical properties and transparency of the
According to one example of the present invention, the composition for forming the ultraviolet blocking layer and / or the wavelength converting layer may further comprise a crosslinkable monomer comprising a (meth) acrylate monomer and / or one or more crosslinkable functional groups have.
The kind of the (meth) acrylic acid ester-based monomer is not particularly limited. In the present invention, for example, alkyl (meth) acrylate can be used. Specifically, from the viewpoint of controlling the adhesive force, alkyl (meth) acrylate having an alkyl group having 1 to 14 carbon atoms, preferably 1 to 8 carbon atoms Rate can be used. Examples of such monomers include methyl (meth) acrylate, ethyl (meth) acrylate, n-propyl (meth) acrylate, isopropyl (meth) acrylate, (Meth) acrylate, 2-ethylhexyl (meth) acrylate, 2-ethylbutyl (meth) acrylate, n-octyl , Isooctyl (meth) acrylate, or isononyl (meth) acrylate. These may be used singly or in combination of two or more.
The crosslinkable monomer means a compound which simultaneously contains both a copolymerizable functional group such as a carbon-carbon double bond in the molecule and a crosslinkable functional group. The crosslinking monomer may serve to provide a crosslinking point through a crosslinkable functional group or to control the adhesive force under high temperature or high humidity conditions.
The crosslinkable monomer may be a commonly used monomer without any particular limitation. Examples of the crosslinkable monomer include a hydroxyl group-containing monomer or a carboxyl group-containing monomer, which may be used singly or in combination. Examples of the hydroxyl group-containing monomer include 2-hydroxyethyl (meth) acrylate, 2-hydroxypropyl (meth) acrylate, 4-hydroxybutyl (meth) acrylate, 6-hydroxyhexyl (Meth) acrylate, 2-hydroxyethyleneglycol (meth) acrylate or 2-hydroxypropyleneglycol (meth) acrylate; Examples of the carboxyl group-containing monomer include acrylic acid, methacrylic acid, 2- (meth) acryloyloxyacetic acid, 3- (meth) acryloyloxypropyl acid, 4- (meth) acryloyloxybutyric acid, Butyric acid, itaconic acid, maleic acid, and the like.
In one embodiment, the crosslinking monomer may be a cyanurate based compound. Cyanurate compounds include, but are not limited to, triallyl cyanurate and triallyl isocyanurate.
In one embodiment, the composition for forming the ultraviolet blocking layer and / or the wavelength conversion layer may contain 40 to 99.9 parts by weight of a (meth) acrylate monomer and 0.1 to 60 parts by weight of a crosslinkable monomer. By adjusting the ratio of the monomer contained in the composition to the above-mentioned range, it is possible to secure a good adhesive force between the base layer and the surface layer.
The composition for forming the ultraviolet blocking layer and / or the wavelength converting layer according to an exemplary embodiment of the present invention may further include a copolymerizable monomer in addition to the (meth) acrylate monomer and the crosslinkable monomer.
The copolymerizable monomer is not particularly limited as long as it is a copolymerizable monomer, and examples thereof include methacrylate, tertiary butyl acrylate, tertiarybutyl methacrylate, iso Butyl methacrylate, isobutyl methacrylate, normal-butyl methacrylate, 1-hexadecyl (meth) acrylate, methyl methacrylate, alkyl (meth) acrylates having a straight-chain or branched-chain alkyl group such as n-propyl methacrylate or sec-butyl methacrylate; N-alkenylformamide having 2 to 20 carbon atoms, 2 to 16 carbon atoms, 2 to 12 carbon atoms, 2 to 8 carbon atoms, or an alkenyl group having 2 to 4 carbon atoms, such as N-vinylformamide; Acrylamide, N, N-diphenyl (meth) acrylamide, N- (n-dodecyl) (meth) acrylamide, N- (meth) acrylamide such as N, N-dimethyl acrylamide or N-hydroxyethyl acrylamide, N-alkyl (meth) acrylamide (Meth) acrylamide, N, N-dialkyl (meth) acrylamide or N, N-diaryl (meth) acrylamide; Alkoxyalkyl (meth) acrylates such as 2-methoxyethyl (meth) acrylate and the like; Dihydrodicyclopentadienyl acrylate, cyclohexyl (meth) acrylate, benzyl (meth) acrylate, cyclopropyl (meth) acrylate, acrylate, N-naphthyl acrylate, 2-phenoxyethyl (meth) acrylate, phenyl (meth) acrylate, Acrylate, 2-phenylethyl (meth) acrylate, isobornyl (meth) acrylate, dicyclopentanyl (meth) acrylate or (Meth) acrylate having a saturated or unsaturated cyclic hydrocarbon group or an aromatic group such as cyclohexyl (meth) acrylate and the like; Or styrene may be exemplified.
When at least one of the above-mentioned monomers is contained as the copolymerizable monomer, it is preferable that the (meth) acrylic acid ester monomer is contained in an amount of 1 to 99 parts by weight; 0.5 to 60 parts by weight of a crosslinkable monomer; And 0.5 to 60 parts by weight of a copolymerizable monomer.
The method of polymerizing the composition for forming the ultraviolet blocking layer and / or the wavelength converting layer is not particularly limited and may be carried out by mixing the above-mentioned monomers in an appropriate ratio, and performing solution polymerization, photo polymerization, Such as bulk polymerization, suspension polymerization, or emulsion polymerization. If necessary in this process, suitable polymerization initiators or molecular weight regulators, chain transfer agents and the like may be used together.
The composition for forming the ultraviolet blocking layer and / or the wavelength converting layer according to an exemplary embodiment of the present invention may further include a crosslinking agent. The crosslinking agent may include at least two or more, two to ten, two to eight, two to six, or two to four functional groups capable of reacting with the crosslinkable functional group contained in the polymer of the composition Crosslinking agent may be used. As such a crosslinking agent, an appropriate type may be selected and used from among conventional crosslinking agents such as an isocyanate crosslinking agent, an epoxy crosslinking agent, an aziridine crosslinking agent and a metal chelate crosslinking agent considering the kind of the crosslinkable functional group contained in the composition.
Examples of the isocyanate crosslinking agent include diisocyanate compounds such as tolylene diisocyanate, xylene diisocyanate, diphenylmethane diisocyanate, hexamethylene diisocyanate, isoboron diisocyanate, tetramethylxylene diisocyanate and naphthalene diisocyanate, and diisocyanate compounds such as diisocyanate compound And a reaction product of a polyol such as trimethylolpropane or an isocyanurate adduct of the above diisocyanate compound. Of these, xylene diisocyanate or hexamethylene diisocyanate can be preferably used. As the epoxy crosslinking agent Is preferably at least one selected from the group consisting of ethylene glycol diglycidyl ether, triglycidyl ether, trimethylolpropane triglycidyl ether, N, N, N ', N'- tetraglycidylethylenediamine and glycerin diglycidyl ether There is at least one selected from the group true can be exemplified.
As the aziridine crosslinking agent, N, N'-toluene-2,4-bis (1-aziridinecarboxamide), N, N'-diphenylmethane-4,4'- (2-methyl aziridine) or tri-1-aziridinyl phosphine oxide, and the like, but not limited thereto, and the metal chelate Examples of the crosslinking agent include compounds in which a polyvalent metal such as aluminum, iron, zinc, tin, titanium, antimony, magnesium, and / or vanadium is coordinated to acetylacetone or ethyl acetoacetate.
The crosslinking agent may be contained in an amount of, for example, 0.1 to 60 parts by weight, 0.5 to 50 parts by weight, 1 to 40 parts by weight, or 5 to 30 parts by weight based on 100 parts by weight of the ultraviolet curable monomer or oligomer.
The composition for forming the ultraviolet blocking layer and / or the wavelength conversion layer according to an exemplary embodiment of the present invention may contain a coupling agent, a tackifier, an antioxidant, a colorant, a reinforcing agent, a filler, An antifoaming agent, a surfactant, and a plasticizer.
The composition for forming the ultraviolet blocking layer and / or the wavelength converting layer according to an example of the present invention may further include a photoinitiator.
Examples of the photoinitiator include a photoinitiator such as a benzoin-based initiator, a hydroxyketone-based initiator, an amino ketone-based initiator, or a phosphine oxide-based initiator, which is capable of generating radicals by light irradiation, Initiators may be used without limitation.
More specifically, examples of the photoinitiator include? -Hydroxyketone compounds (e.g., IRGACURE 184,
The photoinitiator may be included, for example, in an amount of 0.1 to 20 parts by weight, 1 to 15 parts by weight, or 2 to 10 parts by weight based on 100 parts by weight of the ultraviolet curable monomer or oligomer. In the above range, the
When the content of the photoinitiator is too small, the effect due to the addition may be insignificant. When the content is too large, the physical properties such as durability and transparency may be adversely affected.
The composition for forming the ultraviolet blocking layer and / or the wavelength converting layer may further include an additive such as a photosensitizer if necessary.
In addition, the thickness of the
The
In addition, the
As described above, a primer layer may be formed between the
The kind of the oxazoline group-containing polymer contained in the primer layer is not particularly limited and may be any one as long as it is excellent in compatibility with the ultraviolet curable monomer. In the present invention, the oxazoline group-containing polymer may be a homopolymer of an oxazoline group-containing monomer; A copolymer comprising an oxazoline group-containing monomer and at least one comonomer; Or mixtures thereof. ≪ / RTI >
The content of the oxazoline group-containing polymer contained in the primer layer is 5 parts by weight to 100 parts by weight, 10 parts by weight to 95 parts by weight based on 100 parts by weight of the base resin of the primer layer (for example, 20 parts by weight to 80 parts by weight, 40 parts by weight to 100 parts by weight, 50 parts by weight to 95 parts by weight, and the like.
The type of the acrylate resin contained in the primer layer may be the same as or different from that of the acrylate resin constituting the
The method for manufacturing the
In forming the
The
Meanwhile, the optical module according to the present invention includes at least one or more
2 and 3 show an exemplary embodiment of an optical module according to the present invention. The optical module shown in Figs. 2 and 3 is an example of a solar cell module.
2 and 3, an optical module according to the present invention includes a
The
The
The sealing material constituting the sealing
The plurality of solar cells C are arranged in the
In the present invention, the solar cell (C) is not particularly limited. The solar cell C may be selected from, for example, a crystalline solar cell and / or a thin film solar cell. In addition, in the present invention, the solar cell C includes a front electrode type, a rear electrode type, and a combination thereof.
The
The
The manufacturing process of the optical module includes the steps of forming the
Further, the optical module according to the present invention may further include a rear member (not shown) according to an exemplary embodiment. This backing member may be provided on the back surface of the
INDUSTRIAL APPLICABILITY According to the present invention described above, the weather resistance and the power generation efficiency can be improved at the same time. Specifically, the
Hereinafter, examples and comparative examples of the present invention will be exemplified. The following examples are provided to illustrate the present invention in order to facilitate understanding of the present invention, and thus the technical scope of the present invention is not limited thereto. Further, the following comparative examples are presented for comparison with the examples, which do not mean the prior art.
[Example 1]
A transparent PET film having a thickness of 250 mu m was prepared. A composition for forming an ultraviolet blocking layer and a wavelength converting layer was coated on both sides of the PET film, and an ultraviolet blocking layer (12, upper part) and a wavelength converting layer (13, lower part) To thereby prepare a transparent sheet (Fig. 1). At this time, the PET film was coated with an oxazoline primer.
The composition for forming the
(DPHA), a polyfunctional oligomer Gatomer 8800 (Nopko Corp., Korea) as crosslinking agent, triallyl isocyanurate (Nippon Kasei Chemical Co., Ltd.) as a crosslinking agent, a photoinitiator A reaction type ultraviolet absorber RUVA93 (Japan, Otsuka Chemical Co., Ltd.) as an Irgacure 184 (1-hydroxy-cyclohexyl-phenyl-ketone; available from Chiba Specialty Chemicals), megaface F470 Lumogen F violet 570 (BASF, Germany) was used as the wavelength conversion material.
FIG. 4 is a graph of absorptions according to the wavelength of the reactive ultraviolet absorber RUVA93, and FIG. 5 is a graph showing luminescence spectra of Lumogen F Violet 570, a wavelength conversion material.
[Example 2]
In contrast to Example 1, the same procedure was performed except that the wavelength converting material was changed. Specifically, in this embodiment, a perylene-based organic fluorescent pigment Lumogen F Yellow 083 (BASF, Germany) was used as the wavelength conversion material. The content of each component constituting the
FIG. 6 is a graph showing the luminescence spectra of Lumogen F Yellow 083, which is a wavelength converting material.
[Example 3]
In contrast to Example 1, the same procedure was performed except that the wavelength converting material was changed. Specifically, in this embodiment, a perylene-based organic fluorescent pigment Lumogen F Orange 240 product (BASF, Germany) was used as a wavelength conversion material. The content of each component constituting the
FIG. 7 is a graph showing the luminescence spectra of Lumogen F Orange 240, which is a wavelength conversion material.
[Example 4]
In contrast to Example 1, the same procedure was performed except that the wavelength converting material was changed. Specifically, in this embodiment, a perylene-based organic fluorescent pigment Lumogen F Red 305 product (BASF, Germany) was used as a wavelength conversion material. The content of each component constituting the
8 is a graph showing the luminescence spectra of Lumogen F Red 305, a wavelength conversion material.
[Comparative Example]
Compared with Example 1, a mixture of polyvinylidene fluoride (PVDF) and polymethyl methacrylate (PMMA) in a weight ratio of 3: 1 as a fluorine resin with a non-curable resin and a mixture of a benzophenone based compound Except that an upper layer of the base layer was formed by mixing UV 531 (manufactured by Songwon Co., Ltd., Korea) and PVDF and PMMA were mixed at a ratio of 3: 1 to form a lower layer of the base layer.
The content of each component constituting the upper and lower layers according to this comparative example is as shown in Table 1 below.
The light transmittance, absorption, emission characteristics, pencil hardness and scratch resistance of the transparent sheet specimens according to each of the Examples and Comparative Examples were evaluated using a spectrometer.
The pencil hardness was a measure for evaluating the degree of hardness of the surface. The hardness without scratches was confirmed after three rounds of the coating layer were measured using a pencil hardness tester under the load of 500 g according to the measurement standard JIS K5600-5-4.
The scratch resistance is a measure for evaluating the degree of scratching on the surface. After mounting a steel hand (# 0000) on a friction tester, the coating layer is reciprocated ten times with a load of 500 g and then the number of scratches Respectively. O when the number of scratches was less than 2, Δ when scratches were less than 2 and less than 5, and X when scratches were 5 or more.
The light transmittance represents an average value at 600 nm to 1200 nm.
The results are shown in Table 2 below.
9 is a graph showing the absorption peak according to the wavelength of the transparent sheet test piece according to the comparative example, and FIGS. 10 to 13 are graphs showing the absorption and the absorption according to the wavelength of the transparent sheet test piece according to each of the above- This is a graph showing emission peaks.
9, the used transparent sheet (comparative example) to which the benzophenone-based compound [UV 531] was applied as an ultraviolet (UV) absorbent absorbs ultraviolet light in the vicinity of about 300 nm to 350 nm have.
As shown in FIG. 10, a reactive ultraviolet absorber [RUVA-93] is applied as an ultraviolet (UV) absorber to the ultraviolet barrier layer (upper part), and a naphthalimide The transparent sheet (Example 1) to which the system compound [Lumogen F Violet 570] is applied absorbs ultraviolet light in the vicinity of about 350 nm to 400 nm and re-emits visible light in the vicinity of about 400 nm to 550 nm.
As shown in the attached FIG. 11, a reactive ultraviolet absorbent (RUVA-93) is applied as an ultraviolet (UV) absorber to the ultraviolet barrier layer (upper portion), and a perylene- The transparent sheet (Example 2) to which Lumogen F Yellow 083 is applied absorbs ultraviolet light in the vicinity of about 400 nm to 500 nm and re-emits visible light in the vicinity of about 500 nm to 600 nm.
As shown in FIG. 12, a reactive ultraviolet absorbent (RUVA-93) is applied as an ultraviolet (UV) absorber to the ultraviolet barrier layer (upper part), and a perylene- The transparent sheet (Example 3) to which Lumogen F Orange 240 is applied absorbs ultraviolet light in the vicinity of about 460 nm to 540 nm and emits visible light in the vicinity of about 520 nm to 620 nm.
(RUVA-93) is applied as an ultraviolet (UV) absorber to the ultraviolet barrier layer (upper part) as shown in FIG. 13, and a perylene compound The transparent sheet (Example 4) to which Lumogen F Red 305 is applied absorbs ultraviolet light in the vicinity of about 410 nm to 500 nm and re-emits visible light in the vicinity of about 580 nm to 670 nm.
Further, as shown in Table 2, it can be seen that the transparent sheet according to the examples had better pencil hardness and scratch resistance than the comparative example. In addition, high light transmittance can be seen.
10: transparent sheet 11: substrate layer
12: ultraviolet blocking layer 13: wavelength conversion layer
100: front member 200: sealing material layer
210: front sealing material layer 220: rear sealing material layer
300: back sheet C: solar cell
Claims (25)
UV curable monomers or oligomers; And a wavelength conversion material formed by curing a composition including a wavelength conversion material that converts a wavelength absorbed from light to a wavelength higher than the absorbed wavelength,
The pencil hardness of the surface of the ultraviolet blocking layer and / or the wavelength conversion layer is not less than 1H,
Wherein the wavelength converting material absorbs an ultraviolet wavelength not overlapping with an absorption wavelength of the ultraviolet absorbent,
Wherein the ultraviolet absorber is a reactive ultraviolet absorber having a reactive group capable of copolymerizing with the ultraviolet curable monomer or oligomer,
Wherein the ultraviolet absorber is a compound represented by the following formula (1)
Wherein the wavelength converting material comprises at least one selected from a naphthalimide-based compound, a metal-organic composite, and a perylene-based compound:
[Chemical Formula 1]
In Formula 1,
R 1 is hydrogen, halogen, an alkoxy group having 1 to 6 carbon atoms, or an aryl group;
R 2 is hydrogen, an alkyl group having 1 to 6 carbon atoms, or an aryl group;
R 3 represents R 4 -R 5 -R 6 ,
R 4 represents a single bond or oxygen,
R 5 represents a single bond or represents - (CH 2 ) m O-, -CH (CH 3 ) CH 2 O-, -CH 2 CH (CH 3 )
- (CH 2 ) m OCH 2 -, -CH (CH 3 ) CH 2 OCH 2 -, and -CH 2 CH (CH 3 ) OCH 2 -
R 6 represents an acryloyl group, a methacryloyl group, a styrene group or a vinyl group,
n and m each independently represent an integer of 1 to 4;
A base layer;
An ultraviolet barrier layer formed on one side of the substrate layer; And
And the wavelength conversion layer formed on the other side of the substrate layer.
Wherein the ultraviolet-curable monomer or oligomer comprises a polyfunctional (meth) acrylate-based compound.
The ultraviolet ray-curable monomer may be selected from the group consisting of trimethylolpropane triacrylate, trimethylolpropane triacrylate, trimethylolpropaneethoxy triacrylate, glycerin propoxylated triacrylate, pentaerythritol triacrylate, pentaerythritol tetraacrylate, Dipentaerythritol tetraacrylate, dipentaerythritol hexaacrylate, urethane acrylate, ester acrylate, epoxy acrylate, ether acrylate, or ethylene oxide thereof, such as ethylene glycol dimethacrylate, ethylene glycol dimethacrylate, and an ethylene oxide (EO) modified compound.
R < 1 > is hydrogen; R 2 is hydrogen or an alkyl group having 1 to 6 carbon atoms;
R 3 represents R 4 -R 5 -R 6 , R 4 represents a single bond, R 5 represents - (CH 2 ) m O-, R 6 represents an acryloyl group or a methacryloyl group,
and m represents an integer of 1 to 3.
The composition for forming an ultraviolet blocking layer comprises 0.1 to 30 parts by weight of an ultraviolet absorber per 100 parts by weight of an ultraviolet curable monomer or oligomer.
Wherein the wavelength converting material absorbs a wavelength of 600 nm or less and converts the wavelength to 400 nm or more.
Wherein the wavelength converting material absorbs a wavelength of 300 to 600 nm and converts the wavelength to a wavelength of 400 to 800 nm.
The ultraviolet absorber absorbs a wavelength of 200 to 400 nm,
Wherein the wavelength converting material absorbs a wavelength of 300 to 600 nm.
Wherein the wavelength converting material comprises a compound represented by the following Formula 2:
(2)
In the formula (2), M is a rare earth element and n is an integer of 1 or more.
Wherein the wavelength converting material comprises a compound represented by the following Formula 3:
(3)
In Formula 3, n is an integer of 1 or more.
Wherein the composition for forming the wavelength converting layer comprises 0.1 to 30 parts by weight of the wavelength conversion material per 100 parts by weight of the ultraviolet curable monomer or oligomer.
Wherein the composition for forming the ultraviolet blocking layer and / or the wavelength conversion layer further comprises a crosslinkable monomer comprising a (meth) acrylate monomer and / or one or more crosslinkable functional groups.
Wherein the crosslinking monomer is a cyanurate compound.
The composition for forming the ultraviolet blocking layer and / or the wavelength conversion layer further comprises a photoinitiator.
The composition for forming an ultraviolet blocking layer and / or a wavelength converting layer comprises 0.1 to 20 parts by weight of a photoinitiator per 100 parts by weight of an ultraviolet curable monomer or oligomer.
Further comprising a primer layer formed between the base layer and the ultraviolet blocking layer and / or between the base layer and the wavelength conversion layer.
UV curable monomers or oligomers; And forming a wavelength conversion layer on the other side of the substrate using a composition including a wavelength conversion material that converts a wavelength absorbed from light into a wavelength higher than the absorbed wavelength,
Wherein the wavelength converting material absorbs an ultraviolet wavelength not overlapping with an absorption wavelength of the ultraviolet absorbent,
Wherein the ultraviolet absorber is a reactive ultraviolet absorber having a reactive group capable of copolymerizing with the ultraviolet curable monomer or oligomer,
Wherein the ultraviolet absorber is a compound represented by the following formula (1)
Wherein the wavelength converting material comprises at least one selected from the group consisting of a naphthalimide compound, a metal-organic compound, and a perillin compound. The method for producing a transparent sheet for an optical module according to claim 1,
[Chemical Formula 1]
In Formula 1,
R 1 is hydrogen, halogen, an alkoxy group having 1 to 6 carbon atoms, or an aryl group;
R 2 is hydrogen, an alkyl group having 1 to 6 carbon atoms, or an aryl group;
R 3 represents R 4 -R 5 -R 6 ,
R 4 represents a single bond or oxygen,
R 5 represents a single bond or represents - (CH 2 ) m O-, -CH (CH 3 ) CH 2 O-, -CH 2 CH (CH 3 )
- (CH 2 ) m OCH 2 -, -CH (CH 3 ) CH 2 OCH 2 -, and -CH 2 CH (CH 3 ) OCH 2 -
R 6 represents an acryloyl group, a methacryloyl group, a styrene group or a vinyl group,
n and m each independently represent an integer of 1 to 4;
An encapsulant layer formed on the front member and encapsulating the solar cell; And
And a back sheet formed on the sealing material layer,
Wherein at least one selected from the front and back sheets comprises a transparent sheet for an optical module according to claim 1.
Priority Applications (1)
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KR1020150080787A KR101941112B1 (en) | 2015-06-08 | 2015-06-08 | Transparent sheet for light module, method for manufacturing the same and light module comprising the same |
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KR1020150080787A KR101941112B1 (en) | 2015-06-08 | 2015-06-08 | Transparent sheet for light module, method for manufacturing the same and light module comprising the same |
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KR101941112B1 true KR101941112B1 (en) | 2019-01-23 |
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Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2011071447A (en) * | 2009-09-28 | 2011-04-07 | Dainippon Printing Co Ltd | Backside protective sheet for solar cell module, and solar cell module |
JP2011142179A (en) * | 2010-01-06 | 2011-07-21 | Mitsubishi Chemicals Corp | Solar cell module |
JP2014060418A (en) * | 2013-11-05 | 2014-04-03 | Hitachi Chemical Co Ltd | Solar battery module |
Family Cites Families (4)
Publication number | Priority date | Publication date | Assignee | Title |
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JP2006255927A (en) | 2005-03-15 | 2006-09-28 | Teijin Dupont Films Japan Ltd | Surface protective film for solar cell and solar cell laminate using it |
AU2009263416B2 (en) | 2008-06-23 | 2014-07-17 | Asahi Glass Company, Limited | Backsheet for solar cell module and solar cell module |
KR101022820B1 (en) | 2009-03-23 | 2011-03-17 | 이정민 | Back sheet for module, its manufacturing method and its manufacturing apparatus thereof |
JP5374286B2 (en) | 2009-09-14 | 2013-12-25 | 富士フイルム株式会社 | Protective film and solar cell front sheet |
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Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2011071447A (en) * | 2009-09-28 | 2011-04-07 | Dainippon Printing Co Ltd | Backside protective sheet for solar cell module, and solar cell module |
JP2011142179A (en) * | 2010-01-06 | 2011-07-21 | Mitsubishi Chemicals Corp | Solar cell module |
JP2014060418A (en) * | 2013-11-05 | 2014-04-03 | Hitachi Chemical Co Ltd | Solar battery module |
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