TWI657591B - Solar optical film and manufacturing method for the same - Google Patents

Abstract

Solar optical film stack and manufacturing method thereof. The solar optical film stack includes a first pressure-sensitive adhesive layer and a second pressure-sensitive adhesive layer. The first pressure-sensitive adhesive layer is formed of a first pressure-sensitive adhesive composition. The first pressure-sensitive adhesive composition includes a first pressure-sensitive adhesive composition and an electrolyte material. The second pressure-sensitive adhesive layer contacts the first pressure-sensitive adhesive layer. The second pressure-sensitive adhesive layer is formed of a second pressure-sensitive adhesive composition. The second pressure-sensitive adhesive composition includes a second pressure-sensitive adhesive composition, a photosensitive dye, and a metal oxide particle.

Description

Solar optical film stack and manufacturing method thereof

The invention relates to a pressure-sensitive adhesive composition and a solar optical film laminate formed by using the same, and particularly to a pressure-sensitive adhesive composition and a dye-sensitized solar cell formed by using the same.

In recent years, as a renewable energy source, researches on technologies using wind power, sunlight, etc. have been extensively conducted. Among them, photovoltaic technology such as solar cells allows renewable energy to be used in ordinary households, so it is one of the technologies that have attracted attention.

Examples of the form of a solar cell using the photoelectric conversion technology include a crystalline silicon solar cell, an amorphous silicon solar cell, an organic thin-film solar cell, and a dye-sensitized solar cell. Among them, crystalline silicon solar cells have been industrially produced from the past, and have become popular with the improvement of conversion efficiency in recent years.

The invention relates to a solar optical film stack and a manufacturing method thereof.

According to an aspect of the present invention, a method for manufacturing a solar optical film stack is provided, which includes the following steps. A first pressure-sensitive adhesive layer is formed on a first substrate. The method includes disposing a first pressure-sensitive adhesive composition on the first substrate. The first pressure-sensitive adhesive composition includes a first pressure-sensitive adhesive composition and an electrolyte material. A second pressure-sensitive adhesive layer is formed on a second substrate. The method includes disposing a second pressure-sensitive adhesive composition on the second substrate. The second pressure-sensitive adhesive composition includes a second pressure-sensitive adhesive composition, a photosensitive dye, and a metal oxide particle. A laminating step is used for laminating the first substrate having the first pressure-sensitive adhesive layer thereon and the second substrate having the second pressure-sensitive adhesive layer thereon.

According to another aspect of the present invention, a solar optical film stack is provided, which includes a first pressure-sensitive adhesive layer and a second pressure-sensitive adhesive layer. The first pressure-sensitive adhesive layer is formed of a first pressure-sensitive adhesive composition. The first pressure-sensitive adhesive composition includes a first pressure-sensitive adhesive composition and an electrolyte material. The second pressure-sensitive adhesive layer contacts the first pressure-sensitive adhesive layer. The second pressure-sensitive adhesive layer is formed of a second pressure-sensitive adhesive composition. The second pressure-sensitive adhesive composition includes a second pressure-sensitive adhesive composition, a photosensitive dye, and a metal oxide particle.

In order to have a better understanding of the above and other aspects of the present invention, the following specific examples are described in detail below in conjunction with the accompanying drawings:

102‧‧‧ the first base

104‧‧‧First material layer

106‧‧‧ the first conductive layer

108‧‧‧ the first pressure-sensitive adhesive composition

110, 210‧‧‧ curing steps

112‧‧‧The first pressure-sensitive adhesive layer

122‧‧‧First electrode composite film

173, 273‧‧‧‧ cutting steps

202‧‧‧Second Base

204‧‧‧Second material layer

206‧‧‧Second conductive layer

208‧‧‧Second pressure-sensitive adhesive composition

209‧‧‧ metal oxide particles

212‧‧‧Second pressure-sensitive adhesive layer

222‧‧‧Second electrode composite film

314‧‧‧roller

316‧‧‧ solar optical film stack

1 and 2 illustrate a method for manufacturing a solar optical film laminate according to an embodiment concept.

FIG. 3 illustrates the manufacture of a solar optical film stack according to another embodiment concept method.

Please refer to FIG. 1 and FIG. 2, which illustrate a method for manufacturing a solar optical film stack 316 according to an embodiment concept.

Referring to FIG. 1, a first substrate 102 is provided. As shown in FIG. 2, the first substrate 102 may include a first material layer 104 and a first conductive layer 106.

The first material layer 104 may be an optical film layer. For example, a thermoplastic resin may include a cellulose resin (for example, Triacetate Cellulose (TAC), Diacetate Cellulose (DAC)), acrylic acid. Resins (for example: poly (methyl methacrylate), PMMA), polyester resins (for example, polyethylene terephthalate (PET), polyethylene naphthalate ), Olefin resin, polycarbonate resin, cycloolefin resin, oriented-polypropylene (OPP), polyethylene (PE), polypropylene (PP), cycloolefin polymer (Cyclic Olefin Polymer, COP), Cyclic Olefin Copolymer (COC), or any combination thereof. In addition, the first material layer 104 may serve as a protective film, and the material may be, for example, (meth) acrylic acid Resins, urethane resins, acrylic urethane resins, epoxy resins, silicone resins and other thermosetting resins or UV-curable resins, or a flexible material such as polyfluorene Imine (polyimide, P I), or other suitable insulating material. The first material layer 104 may be one or any group of the foregoing materials. Together.

The first conductive layer 106 may include a metal, carbon black, a conductive resin, or a combination thereof. The metal may include platinum, aluminum, copper, chromium, nickel, tungsten, titanium, gold, silver, copper, rhodium, indium, etc. Examples of the conductive resin include polyaniline, polypyrrole, polyacetylene, PEDOT-PSS, poly-EDT Wait. The foregoing materials may be used alone or in combination.

In one embodiment, the method for forming the first conductive layer 106 includes physical vapor deposition (such as hot metal evaporation, electron beam evaporation, RF sputtering, magnetron sputtering, atomic layer deposition, arc vapor deposition, and ions). Beam-assisted deposition), or chemical vapor deposition (such as CVD, MOCVD, and plasma enhanced chemical vapor deposition (PECVD)), electroplating, coating, and so on.

Then, the first substrate 102 can be rolled up, and the first pressure-sensitive adhesive composition 108 can be coated on the first conductive layer 106 side.

In the embodiment, the first pressure-sensitive adhesive composition 108 includes a first pressure-sensitive adhesive composition and an electrolyte material. In the embodiment, the first pressure-sensitive adhesive composition and the electrolyte material can be stirred uniformly, and the electrolyte material can be dissolved in the first pressure-sensitive adhesive composition. In one embodiment, based on 100 parts by weight of the first pressure-sensitive adhesive composition, the electrolyte material is 0.1% to 10% by weight, 1% to 10% by weight, or 1% to 8% by weight, or 1% to 5% by weight, or 1% to 3% by weight.

In one embodiment, the electrolyte material includes: an iodine-containing compound, or a bromine-containing compound, or a metal complex, or a cobalt redox complex, or a sulfur compound, or a viologen dye, or hydroquinone-quinone, or one of the foregoing. combination.

In one embodiment, the iodine-containing compound include iodine molecule (I _2), iodine ion (I ^-) of a metal salt compound, 1,2-dimethyl-3-propyl imidazolium iodide, or combinations of the above. The positive ions of metal salts containing iodine ions include lithium ions (Li ⁺ ), sodium ions (Na ⁺ ), potassium ions (K ⁺ ), rubidium ions (Rb ⁺ ), cesium ions (Cs ⁺ ), and beryllium ions (Be ^{2 +} ), Magnesium ion (Mg ²⁺ ), calcium ion (Ca ²⁺ ), strontium ion (Sr ²⁺ ), barium ion (Ba ²⁺ ); in one embodiment, the metal salt compound containing iodide ion includes potassium iodide ( KI). As the bromine-containing compound, metal bromides such as LiBr, NaBr, KBr, CsBr and CaBr ₂ , quaternary ammonium bromide, such as tetraalkylammonium bromide, pyridinium bromide, and the like can be used. In one embodiment, the metal complexes include ferrocyanide-ferrocyanide complexes, ferrocene-ferrocene ion complexes, and the like. In one embodiment, the sulfur compound includes sodium polysulfide or an alkyl mercaptan-alkyl disulfide. The electrolyte materials may be used alone or in combination.

In the embodiment, the first pressure-sensitive adhesive composition is an acrylic pressure sensitive adhesive, which may be selected from methyl methacrylate and n-propyl methacrylate. ), Butyl methacrylate, n-octyl methacrylate, iso-octyl methacrylate, 2-ethylhexyl methacrylate (2- ethylhexyl methacrylate), methacrylate (MA), n-propyl acrylate, butyl acrylate, n-octyl methacrylate, iso-octyl a group consisting of acrylate), 2-ethylhexyl acrylate (2-EHA), iso-bornyl acrylate (IBOA), and any combination thereof.

In one embodiment, the composition of the first pressure-sensitive adhesive composition mainly includes but is not limited to: (A) a main agent, (B) a cross-linking agent, and (C) a solvent. Each composition will be described below.

(A) The main agent:

The main agent contains at least one (meth) acrylate, as shown in [Chemical Formula 1], wherein R ₁ is a hydrogen atom or a methyl group, and R ₂ is an alkyl group, an aryl group, or an aryloxy group having 1 to 14 carbon atoms. Hereinafter, (meth) acrylate means any one of acrylate or methacrylate, and the meaning of "(meth)" appearing in the rest can also be deduced by analogy.

When R ₂ is an alkyl group, the (meth) acrylate may be selected from, for example, methyl (meth) acrylate, ethyl (meth) acrylate, propyl (meth) acrylate, n-butyl (meth) acrylate Esters, straight octyl (meth) acrylates, n-octyl (meth) acrylate, undecyl (meth) acrylate, or the like; or, for example, selected from: isobutyl (meth) acrylate, ( Branched (meth) acrylic acid alkyl esters such as 2-ethylhexyl methacrylate, isooctyl (meth) acrylate; or, for example, selected from: 2-methoxyethyl (meth) acrylate Ester, ethoxymethyl (meth) acrylate, and the like have alkoxy-substituted alkyl (meth) acrylates.

When R ₂ is an aryl group, for example, the (meth) acrylate can be selected from benzyl (meth) acrylate and the like. When R ₂ is an aryloxy group, the (meth) acrylate may be selected from, for example, 2-phenoxyethyl (meth) acrylate, 2- (2-phenoxyethoxy) (meth) acrylate Ethyl ester, (meth) acrylate of nonylphenol modified by ethylene oxide, 2- (o-phenylphenoxy) ethyl (meth) acrylate, and the like.

The base agent may include the aforementioned one (meth) acrylate or a mixture of a plurality of types of (meth) acrylate, and the total amount of the base agent is 100 parts by weight.

In an embodiment, the total amount of the main agent is 100 parts by weight, and the main agent may include the following formulation ratios: 40 to 90 parts by weight of butyl acrylate (BA), 10 to 40 parts by weight of methyl acrylate (MA), and acrylic acid ( AA) 1 part by weight or less, 5 parts by weight of 2-hydroxyethyl acrylate (HEA), 5 parts by weight of 2-methoxyethyl acrylate (MEA), or 2-phenoxyethyl acrylate (PEA) 4 ~ 10 parts by weight.

In one embodiment, the average molecular weight of the main agent is between 1.2 and 1.7 million, and Mw / Mn is between 3.5 and 5.

(B) Crosslinking agent:

The cross-linking agent can help the (meth) acrylate monomer in the main agent to cross-link, form a network structure, and improve the strength of the adhesive layer. The cross-linking agent has at least two functional groups in the molecule and can interact with the main agent. (Meth) acrylate monomer polar functional group reaction, its types are epoxy-based crosslinking agent, isocyanate-based crosslinking agent, imine-based crosslinking agent, metal chelate-based crosslinking agent, aziridine-based cross As the cross-linking agent, one kind may be selected or a plurality of cross-linking agents may be mixed. Based on the total amount of the main agent being 100 parts by weight, the total amount of the crosslinking agent is 0.05 to 20 parts by weight. If the proportion of the cross-linking agent is too low, although it can increase part of the adhesive force, the cohesive force of the formed adhesive layer is insufficient, and a foaming phenomenon may occur during a high temperature test.

The epoxy-based crosslinking agent can be selected from, for example, bisphenol A epoxy resin, ethylene glycol diglycidyl ether, polyethylene glycol diglycidyl ether, glycerol diglycidyl ether, and glycerol triglycidyl. Glyceryl ether, 1,6-hexanediol diglycidyl ether, trimethylolpropane triglycidyl ether, N, N-diglycidylaniline, N, N, N ', N'-tetraglycidyl- M-xylenediamine, 1,3-bis (N, N-diglycidylaminomethyl) cyclohexane, and the like.

The isocyanate-based crosslinking agent can be selected from, for example, toluene diisocyanate, hexamethylene diisocyanate, isophorone diisocyanate, xylene diisocyanate, hydrogenated xylene diisocyanate, diphenylmethane diisocyanate, and hydrogenated diphenyl group. Methane diisocyanate, naphthalene diisocyanate, triphenylmethane triisocyanate, etc.

The imine-based crosslinking agent can be selected from, for example, diethylenetriamine and triethylenetetramine.

The metal chelating crosslinking agent can be selected from, for example, acetoacetone or acetoacetate and aluminum, iron, copper, zinc, tin, titanium, nickel, antimony, magnesium, barium, chromium, zirconium, and the like. Compounds made from valence metals.

The aziridine-based crosslinking agent can be selected from, for example, diphenylmethane-4,4'-bis (1-aziridinecarboxamide), toluene-2,4-bis (1-aziridinecarboxamide) ), Triethylene melamine, m-xylylenedi-bis-1- (2-methylaziridine), p--1-aziridinylphosphine oxide, hexamethylene-1,6-bis (1- Aziridine formamidine), trimethylolpropane-tri-β-aziridinylpropionate, tetramethylolmethane-tri-β-aziridinylpropionate, and the like.

(C) Solvent:

(Meth) acrylates are often reacted in a solution state. For example, the organic solvent used can be selected from aromatic hydrocarbons such as toluene and xylene; or, for example, ethyl acetate, butyl acetate, and the like can be selected. Esters; or, for example, aliphatic alcohols such as propanol, isopropanol, etc .; or, for example, ketones such as acetone, methyl ethyl ketone, methyl isobutyl ketone, etc.

Please refer to FIG. 1. Next, the first pressure-sensitive adhesive composition 108 on the first substrate 102 may be cured 110 to form a first pressure-sensitive adhesive layer 112 on the first substrate 102 to complete a first Fabrication of an electrode composite film 122.

The curing step 110 may appropriately select a method according to the first pressure-sensitive adhesive composition, including, but not limited to, heating, light, and / or other suitable methods. The first pressure-sensitive adhesive layer 112 having a solid state can enable subsequent assembly steps to be performed in a simpler and faster manner.

Referring to FIG. 1, on the other hand, a second substrate 202 is provided. As shown in FIG. 2, the second substrate 202 may include a second material layer 204 and a second conductive layer 206. The second material layer 204 may be an optical film layer, and its material is the same as that of the first material layer 104, and details are not described herein again.

The second conductive layer 206 includes a metal, a conductive oxide, a carbon material, a conductive polymer, and the like. Examples of the metal include titanium, nickel, platinum, gold, silver, copper, aluminum, tungsten, rhodium, indium, and the like. Examples of the conductive oxide include tin oxide, fluorine-doped tin oxide (FTO), indium oxide, tin-doped indium oxide (ITO), zinc oxide, and the like. Examples of the carbon material include nano carbon tubes, graphene, carbon black, and the like. Examples of the conductive polymer include poly 3,4-ethylenedioxythiophene / polystyrene sulfonate (PEDOT / PSS), polypyrrole, polyaniline, poly-3,4-ethylenedioxythiophene (Po-EDT) and so on. These materials can be used individually or in combination. In one embodiment, the method for forming the second conductive layer 206 includes, but is not limited to, physical vapor deposition (such as hot metal evaporation, electron beam evaporation, RF sputtering, magnetron sputtering, atomic layer deposition, and arc vapor phase). Deposition and ion beam assisted deposition), or chemical vapor deposition (such as CVD, MOCVD, and plasma-enhanced chemical vapor deposition (PECVD)), electroplating, coating, etc.

As shown in FIG. 1, the second substrate 202 can be unrolled, and a second pressure-sensitive adhesive composition 208 can be coated on the second conductive layer 206 (FIG. 2) side.

In the embodiment, the second pressure-sensitive adhesive composition 208 includes a second pressure-sensitive adhesive composition, a photosensitive dye, and metal oxide particles 209 (FIG. 2). The metal oxide particles 209 can be added to the photosensitizing dye first, and the second pressure-sensitive adhesive composition can be added after being stirred well. In the examples, based on 100 parts by weight of the second pressure-sensitive adhesive composition, the parts by weight of the photosensitive dye are 0.01% to 0.5%, and the parts by weight of the metal oxide particles are 20% to 30%.

In the embodiment, the second pressure-sensitive adhesive composition is an acrylic pressure sensitive adhesive, which may be selected from methyl methacrylate and n-propyl methacrylate. ), Butyl methacrylate, n-octyl methacrylate), iso-octyl methacrylate, 2-ethylhexyl methacrylate, methacrylate (MA), n-propyl acrylate Butyl acrylate, n-octyl methacrylate, iso-octyl acrylate, 2-ethylhexyl acrylate (2-EHA), acrylic acid A group of iso-bornyl acrylate (IBOA) and any combination of the above.

In one embodiment, the composition of the second pressure-sensitive adhesive composition mainly includes, but is not limited to, the above-mentioned (A) main agent, (B) cross-linking agent, and (C) solvent, which will not be repeated here.

In the embodiment, the first pressure-sensitive adhesive composition and the second pressure-sensitive adhesive composition may be the same or different, and other types of pressure-sensitive adhesive compositions may also be used.

The photosensitive dye may be a dye sensitizer having an absorbance in a wide range of a visible light region and / or an infrared light region, and may be, for example, an organic dye, a metal complex dye, or a combination thereof. Examples of the organic dyes include azo-type dyes, quinone-type dyes, quinone-imine-type dyes, quinacridone-type dyes, squarelium-type dyes, cyanine-type dyes, merocyanine-type dyes, and triphenylmethane Type dye, dibenzopiperan type dye, porphyrin type dye, fluorene type dye, indigo type dye, naphthalene cyanine type dye, or a combination thereof. Examples of metal complex dyes include phthalocyanine-type dyes and ruthenium-type dyes, which include metals such as the following as dominant metals: Cu, Ni, Fe, Co, V, Sn, Si, Ti, Ge, Cr, Zn, Ru , Mg, Al, Pb, Mn, In, Mo, Y, Zr, Nb, Sb, La, W, Pt, Ta, Ir, Pd, Os, Ga, Tb, Eu, Rb, Bi, Se, As, Sc , Ag, Cd, Hf, Re, Au, Ac, Tc, Te, Rh, or a combination thereof.

In one embodiment, the material of the metal oxide particles 209 may include TiO ₂ , but the disclosure is not limited thereto, and ZnO, SnO ₂ , ITO, ZrO ₂ , MgO, Al ₂ O ₃ , CeO ₂ , Bi ₂ O ₃ , Mn ₃ O4, Y ₂ O ₃ , WO ₃ , Ta ₂ O ₅ , Nb ₂ O ₅ , La ₂ O ₃ and other suitable materials, or a combination thereof. In the embodiment, the metal oxide particles 209 have a minute size, for example, a micron-size particle size or a nano-size particle size. The particle diameter of the metal oxide particles 209 may be 1 nm to 100,000 nm, 10 nm to 1000 nm, and 1 nm to 100 nm. The metal oxide particles 209 may have a porous property.

Then, a curing step 210 may be performed on the second pressure-sensitive adhesive composition 208 on the second substrate 202 to form a second pressure-sensitive adhesive layer 212 on the second substrate 202 to complete a second electrode composite film 222. Production.

The curing step 210 may select a suitable method according to the second pressure-sensitive adhesive composition, including, but not limited to, heating, light, and / or other suitable methods. The second pressure-sensitive adhesive layer 212 having a solid state can enable subsequent assembly steps to be performed in a simpler and faster manner.

Then, the first electrode composite film 122 and the second electrode composite film 222 are bonded to each other, thereby forming a solar optical film stack 316. In one embodiment, in the bonding step, the first pressure-sensitive adhesive layer 112 and the second pressure-sensitive adhesive layer 212 face each other, and the rollers 314 can be pressed and adhered to each other to contact each other.

In one embodiment, the aforementioned bonding is performed by a roll-to-roll process of the first electrode composite film 122 and the second electrode composite film 222.

In one embodiment, the first electrode composite film 122 and the second electrode composite film 222 may be rolled up separately, and when the laminating step is to be performed, the first electrode After the electrode composite film 122 and the second electrode composite film 222 are respectively rolled out, a laminating step is performed.

In the embodiment, after the laminating step is completed, a cutting step may be performed on the solar optical film stack 316 to form a dye-sensitized solar cell of an appropriate size.

FIG. 3 illustrates a method for manufacturing a solar optical film stack according to another embodiment concept. In the embodiment, the first electrode composite film 122 and the second electrode composite film 222 may be respectively subjected to cutting steps 173 and 273 to form a sheet-like first electrode composite film 122 and a second electrode composite film 222, and The laminating process of the first electrode composite film 122 and the second electrode composite film 222 obtained through the cutting steps 173 and 273 is performed to obtain a solar optical film stack 316 similar to FIG. 2.

In the embodiment, the first pressure-sensitive adhesive layer 112 containing an electrolyte material is used as an electrolyte layer. The second pressure-sensitive adhesive layer 212 is used as a photosensitizing layer. The first conductive layer 106 is used as a cathode electrode. The second conductive layer 206 functions as an anode electrode. In an embodiment, a portion of the first conductive layer 106 that contacts the first pressure-sensitive adhesive layer 112 may include a conductive material that helps catalyze an electrolyte, such as Pt and the like.

In general, the dye-sensitized solar cell system uses a liquid type electrolyte solution, which needs to be sealed with a frame structure to avoid leakage. These products have complex manufacturing processes, low yields, and poor environmental durability of the electrolyte solution, which affects product life.

In the embodiment, the first pressure-sensitive adhesive layer 112 used as the electrolyte layer is formed during the manufacturing process by using the first pressure-sensitive adhesive composition 108 having a flow property. The first pressure-sensitive adhesive composition 108 can be disposed on the first substrate by, for example, coating or the like. 102 on. Then, after The cured first pressure-sensitive adhesive layer 112 has a solid state and has almost no flow properties. Therefore, the subsequent assembly step need not consider the problem of liquid leakage, and can be performed in a simpler and faster manner. This concept can also be applied to the second pressure-sensitive adhesive layer 212.

The solid electrolyte layer can also exhibit better environmental durability than the electrolyte solution. Therefore, the manufacturing method according to the present disclosure is simple and fast, and has excellent product yield and service life.

In addition, according to the method of the present disclosure, a solar optical film stack can be produced in a continuous roll-to-roll process. Therefore, the method is simple and fast, and can be used to manufacture solar optical film laminates in large quantities, and has excellent product yield and service life.

In addition, according to the method disclosed herein, a dye-sensitized solar cell can be fabricated on a flexible material to form a flexible dye-sensitized solar cell.

In summary, although the present invention has been disclosed as above with the embodiments, it is not intended to limit the present invention. Those with ordinary knowledge in the technical field to which the present invention pertains can make various changes and modifications without departing from the spirit and scope of the present invention. Therefore, the protection scope of the present invention shall be determined by the scope of the attached patent application.

Claims (17)

A method for manufacturing a solar optical film stack includes forming a first pressure-sensitive adhesive layer on a first substrate, and the method includes disposing a first pressure-sensitive adhesive composition on the first substrate, wherein the first The pressure-sensitive adhesive composition includes a first pressure-sensitive adhesive composition and an electrolyte material; forming a second pressure-sensitive adhesive layer on a second substrate, and the method includes disposing a second pressure-sensitive adhesive composition on the first On two substrates, the second pressure-sensitive adhesive composition includes a second pressure-sensitive adhesive composition, a photosensitive dye, and a metal oxide particle; and a bonding step for applying the first pressure-sensitive adhesive composition. The first substrate having the adhesive layer thereon and the second substrate having the second pressure-sensitive adhesive layer thereon adhere to each other. The method for manufacturing a solar optical film stack as described in item 1 of the scope of the patent application, further includes performing a cutting step on a solar optical film stack formed through the bonding step. The method for manufacturing a solar optical film laminate according to item 1 of the scope of patent application, further comprising: forming a first electrode composite film formed on the first substrate via the first pressure-sensitive adhesive layer; and Forming a second electrode composite film formed by the second pressure-sensitive adhesive layer on the second substrate and performing a cutting step to form a sheet-like first electrode composite film and a sheet-like second electrode composite film, respectively, The laminating step is performed on the sheet-like first electrode composite film and the sheet-like second electrode composite film. The method for manufacturing a solar optical film laminate according to item 1 of the scope of the patent application, wherein the laminating step uses a roller to roll the first pressure-sensitive adhesive layer and the second pressure-sensitive adhesive layer facing each other in a roll-to-roll process. The layers are pressed and attached to each other and contact each other. According to the method for manufacturing a solar optical film laminate as described in item 1 of the patent application scope, the method further includes, before the bonding step, separately performing the first pressure-sensitive adhesive composition and the second pressure-sensitive adhesive composition. Cure step. The method for manufacturing a solar optical film laminate according to item 1 of the scope of patent application, wherein the first pressure-sensitive adhesive composition is arranged on the first substrate, and the second pressure-sensitive adhesive composition is arranged on the first substrate. The method on the second substrate includes a coating method. The method for manufacturing a solar optical film laminate according to item 1 of the patent application scope, wherein the electrolyte material is 0.1% to 10% by weight based on 100 parts by weight of the first pressure-sensitive adhesive composition. A solar optical film stack includes a first pressure-sensitive adhesive layer formed of a first pressure-sensitive adhesive composition, wherein the first pressure-sensitive adhesive composition includes a first pressure-sensitive adhesive composition and an electrolyte. Material; and a second pressure-sensitive adhesive layer, contacting the first pressure-sensitive adhesive layer, the second pressure-sensitive adhesive layer is formed of a second pressure-sensitive adhesive composition, the second pressure-sensitive adhesive composition includes a first Two pressure-sensitive adhesive compositions, a photosensitive dye and a metal oxide particle. The solar optical film stack according to item 8 of the scope of the patent application, wherein the electrolyte material includes an iodine-containing compound, a bromine-containing compound, a metal complex, a cobalt redox complex, a sulfur compound, a viologen pigment dye, and hydroquinone -Quinone, or a combination thereof. The solar application of the optical film laminate patentable scope of item 8, wherein the electrolyte material comprises an iodine compound, the iodine-containing compound include iodine molecule (I _2), iodine ion (I ^-) of a metal salt compound, or A combination of the above. The solar optical film stack according to item 10 of the scope of the patent application, wherein the positive ion of the metal salt containing iodine ion includes lithium ion (Li ⁺ ), sodium ion (Na ⁺ ), potassium ion (K ⁺ ), thallium Ions (Rb ⁺ ), cesium ions (Cs ⁺ ), beryllium ions (Be ²⁺ ), magnesium ions (Mg ²⁺ ), calcium ions (Ca ²⁺ ), strontium ions (Sr ²⁺ ), barium ions (Ba ^{2 +} ). The solar optical film stack according to item 8 of the application, wherein the metal salt compound containing iodine ions includes potassium iodide (KI). The solar optical film laminate according to item 8 of the scope of the patent application, wherein the first pressure-sensitive adhesive composition and the second pressure-sensitive adhesive composition are each independently an acrylic pressure sensitive adhesive. The solar optical film laminate according to item 8 of the scope of patent application, wherein based on 100 parts by weight of the second pressure-sensitive adhesive composition, the photosensitive dye is 0.01% to 0.5% by weight, and the metal oxide particles 20% to 30% by weight. The solar optical film laminate according to item 8 of the scope of application for a patent, wherein the electrolyte material is 0.1% to 10% by weight based on 100 parts by weight of the first pressure-sensitive adhesive composition. The solar optical film stack according to item 8 of the scope of the patent application, further comprising a first material layer and a second material layer, respectively on the first pressure-sensitive adhesive layer and the second pressure-sensitive adhesive layer, wherein The first material layer and the second material layer include a cellulose resin, an acrylic resin, a polyester resin, an olefin resin, a polycarbonate resin, a cycloolefin resin, a urethane resin, and a ring, respectively. An oxygen-based resin, a silicone resin, or a combination thereof. The solar optical film stack as described in the patent application No. 8 is applied to a flexible dye-sensitized solar cell.