A color light conversion aid, a color light conversion adhesive film and a photovoltaic module

Abstract

The application discloses a color light conversion auxiliary agent, a color light conversion adhesive film and a photovoltaic module. The color light conversion auxiliary agent comprises a compound with a structure shown in the following formula: wherein R1 and R2 are each independently selected from H, a substituted or unsubstituted alkyl, a substituted or unsubstituted alkenyl, a substituted or unsubstituted heteroalkyl, a substituted or unsubstituted aryl, a substituted or unsubstituted heteroaryl, a substituted or unsubstituted amino, a substituted or unsubstituted amido, a substituted or unsubstituted cyclic acylimido, a substituted or unsubstituted alkoxy, a substituted or unsubstituted carboxyl, a substituted or unsubstituted ester, and a substituted or unsubstituted carbonyl; X is selected from a sulfur atom or a nitrogen atom substituted with an alkyl chain; and Y and Z are each independently selected from any one of H, fluorine, chlorine, bromine, an alkyl and an alkoxy. The color light conversion auxiliary agent is combined with a color light conversion agent, can convert ultraviolet light into yellow light, has a small dosage, does not affect the absorption of visible light by a photovoltaic device and is stable in structure.

Description

Technical Field

[0001] This invention relates to the field of photovoltaic materials technology, and specifically to a color light conversion aid, a color light conversion film, and a photovoltaic module. Background Technology

[0002] With the continuous advancement of solar cell technology, the photoelectric conversion efficiency of solar cells has gradually improved. For example, N-type TOPCon and heterojunction solar cells (HJT) are commonly used to replace PERC solar cells, and new thin-film solar cells, such as perovskite solar cells and organic solar cells, are also emerging. However, high-energy rays in sunlight, namely ultraviolet (UV) light, can affect solar cells. This is mainly manifested in the decrease in photoelectric conversion efficiency and the damage to the module materials caused by long-term outdoor UV exposure. However, simply blocking UV light will result in the loss of some of the sunlight's energy. Therefore, developing a color light conversion material that can both absorb UV light and convert it into low-energy light for use by solar cells has become an urgent problem for photovoltaic manufacturers, encapsulant film manufacturers, and module manufacturers. To address these issues, color light conversion agents have emerged, which are color light conversion materials that can convert UV light into visible light.

[0003] To date, various types of light-emitting converters have been developed and applied in the photovoltaic field, such as inorganic rare earth elements, zinc sulfide quantum dots, and carbon dots. Another type consists of light-emitting converters composed of small organic molecules, mostly exhibiting conjugated structures. CN103562323 and CN105419379B both disclose a series of high-performance light-emitting converters with high luminous efficiency, which can improve the efficiency of battery devices to a certain extent. However, the difference between the absorption and emission peaks of these materials is not large enough. This means that to absorb shorter wavelengths of ultraviolet light, the selected light-emitting converter will have fluorescence occurring closer to the ultraviolet region; conversely, to obtain longer wavelengths of fluorescence, the selected light-emitting converter will have its absorption peak closer to the visible light region, affecting the battery's absorption of visible light.

[0004] Currently, the main fluorescence emission peak of mainstream color conversion agents is around 400nm, which limits the light conversion efficiency and device adaptability. The market has shown a strong demand for color conversion aids that can provide a wider degree of freedom in light conversion to adapt to different device forms and efficiency requirements. To meet this market demand, researching and developing color conversion aids that can extend the emission wavelength is particularly important.

[0005] Therefore, developing a color conversion aid that can assist conventional color conversion agents in extending their emission wavelength as much as possible is of great practical significance. Summary of the Invention

[0006] Due to the aforementioned deficiencies in the existing technology, the present invention provides a color light conversion aid that can assist conventional color light conversion agents in making their emission wavelength as long as possible. It can efficiently convert the ultraviolet light absorbed by conventional color light conversion agents into yellow light of about 500nm, and can achieve full absorption in the 300~400nm wavelength band and yellow light emission of about 500nm.

[0007] To achieve the above objectives, the present invention provides the following technical solution:

[0008] A color conversion aid comprising a compound having the structure shown in (Ⅰ):

[0009] (I)

[0010] Wherein, R1 and R2 are each independently selected from H, substituted or unsubstituted alkyl, substituted or unsubstituted alkenyl, substituted or unsubstituted heteroalkyl, substituted or unsubstituted aryl, substituted or unsubstituted heteroaryl, substituted or unsubstituted amino, substituted or unsubstituted amide, substituted or unsubstituted cyclic imino, substituted or unsubstituted alkoxy, substituted or unsubstituted carboxyl, substituted or unsubstituted ester, and substituted or unsubstituted carbonyl, and R1 and R2 are not both H; the substituted substituents include fluorine, chlorine, bromine, iodine, C1-C1, and C2-C2. 20 Hydroxyl group, C1-C 20 Ester group, C1-C 20 Carboxyl group, C1-C 20 Amino, C1-C 20 Thiol group, C1-C 20 amide group, C1-C 20 carbonyl group, C1-C 20 Alkoxy, C6~C 20 Aryl, C4~C 20 heteroaryl, C1-C 20 Alkyl, C1-C 20 Heteroalkyl, C1-C 20 alkenyl, C1-C 20 Any one of the imino groups;

[0011] X is a sulfur atom or a nitrogen atom substituted by an alkyl chain;

[0012] Y and Z are each independently selected from any one of H, fluorine, chlorine, bromine, alkyl, and alkoxy.

[0013] The aforementioned color conversion additive can efficiently convert the ultraviolet light absorbed by conventional color conversion additives into yellow light of about 500nm, achieving full absorption in the 300~400nm wavelength band and yellow light emission of about 500nm. At the same time, the amount of color conversion additive required is extremely small, and it has virtually no impact on the battery's absorption of light in the about 400nm wavelength band, showing good application prospects.

[0014] As a preferred technical solution:

[0015] In the color conversion aid described above, R1 and R2 are each independently selected from H, substituted or unsubstituted C1 to C2. 20 Alkyl, substituted or unsubstituted C1-C 20 Any one of the alkenyl groups;

[0016] The nitrogen atom substituted in the alkyl chain refers to C1 to C2. 20 Nitrogen atoms substituted with alkyl groups;

[0017] Y and Z are selected from C1 to C2. 20 Alkyl or alkoxy groups.

[0018] The color conversion aid described above comprises any one or a combination of at least two of the following compounds:

[0019] .

[0020] The present invention also provides a color conversion film, wherein the raw materials for preparing the color conversion film include the color conversion additive, color conversion agent and resin as described above.

[0021] As a preferred technical solution:

[0022] In the color conversion film described above, the color conversion additive has a mass percentage content of 0.001 to 0.1% in the raw materials. If the content of the color conversion additive is less than 0.001%, the light conversion effect of the color conversion film will be insignificant. If the content of the color conversion additive is greater than 0.1%, the color conversion film will have significant absorption in visible light, thereby affecting the absorption of sunlight by the battery itself.

[0023] The color conversion adhesive film as described above, wherein the resin comprises any one or a combination of at least two of polyvinyl acetate, polyethylene-octene copolymer, polyvinyl butyral, hot-melt polyolefin particles, or thermoplastic polyurethane.

[0024] The light conversion adhesive film described above, wherein the raw materials for preparing the light conversion adhesive film further include any one or a combination of at least two of the following: a primary crosslinking agent, a co-crosslinking agent, a silane coupling agent, a thickening agent, or inorganic powder;

[0025] The main crosslinking agent grafts the color conversion aid onto the color conversion film by forming C-C bonds through free radical coupling, thereby efficiently fixing the target molecules onto the color conversion film.

[0026] Preferably, the main crosslinking agent comprises a peroxide.

[0027] Preferably, the peroxide comprises any one or a combination of at least two of the following: 2-ethylhexyl tert-butyl peroxide, 2-ethylhexyl tert-pentyl peroxide, 2,5-dimethyl-2,5-bis(tert-butyl peroxide)hexane, 3,5,5-trimethylhexanoate tert-butyl peroxide, di(4-methylbenzoyl) peroxide, benzoyl peroxide, 1,1-di-tert-butylperoxide cyclohexane, tert-butylperoxide-2-ethylhexyl carbonate, n-butyl-4,4-di(tert-butylperoxide)valerate, dicumyl peroxide, α,α′-bis(tert-butylperoxide)-1,3-diisopropylbenzene, or 1,1-bis(tert-butylperoxy)-3,3,5-trimethylcyclohexane.

[0028] Preferably, the co-crosslinking agent includes any one or a combination of at least two of triallyl isocyanurate, triallyl cyanurate, or acrylic co-crosslinking agents.

[0029] Preferably, the acrylic co-crosslinking agent includes any one or a combination of at least two of the following: trimethylolpropane triacrylate, ethoxylated trimethylolpropane triacrylate, propanetriol triacrylate, or ethoxylated pentaerythritol tetraacrylate.

[0030] Preferably, the silane coupling agent includes any one or a combination of at least two of the following: vinyl silane coupling agents, chlorinated hydrocarbon silane coupling agents, ammonia hydrocarbon silane coupling agents, epoxy hydrocarbon silane coupling agents, methacryloyloxyalkyl silane coupling agents, sulfur-containing hydrocarbon silane coupling agents, pseudohalogen silane coupling agents, or quaternary ammonia hydrocarbon silane coupling agents.

[0031] Preferably, the tackifying agent comprises any one or a combination of at least two of the following: oligomers of silanes, rosin resins, petroleum resins, or terpene resins.

[0032] Preferably, the inorganic powder comprises any one or a combination of at least two of the following: silicon dioxide, titanium dioxide, montmorillonite, calcium carbonate, mica, zirconium phosphate, magnesium hydroxide, magnesium oxide, aluminum hydroxide, or vanadium dioxide.

[0033] The color conversion film described above has an absorption peak of the color conversion agent below 400 nm;

[0034] The color conversion agent includes any one or a mixture of at least two of the following: organic fluorescent dyes, rare earth organic complexes, rare earth inorganic compounds, CdSe quantum dots, or perovskite quantum dots.

[0035] In addition, the present invention also provides a photovoltaic module, which includes the color conversion film and the battery as described above.

[0036] As a preferred technical solution:

[0037] The photovoltaic module described above includes any one or a combination of at least two of the following: indium gallium arsenide solar cells, organic solar cells, perovskite solar cells, cadmium sulfide / cadmium telluride solar cells, amorphous silicon solar cells, microcrystalline silicon solar cells, and crystalline silicon solar cells.

[0038] The above technical solution is only one feasible technical solution of the present invention. The scope of protection of the present invention is not limited thereto. Those skilled in the art can reasonably adjust the specific design according to actual needs.

[0039] The above invention has the following advantages or beneficial effects:

[0040] (1) The color conversion aid of the present invention has the characteristics of simple structure, high fluorescence quantum yield, and no precipitation problem, which fully meets the requirements of the film for additives.

[0041] (2) When the color light conversion additive of the present invention is used in combination with conventional color light conversion materials, the resulting film can convert the absorbed ultraviolet light into lower energy yellow light (the ultraviolet light is efficiently converted into yellow light of about 500nm, which can achieve full absorption in the 300~400nm band and yellow light emission of about 500nm), which not only benefits the absorption of battery devices, but also plays a certain protective role.

[0042] (3) The color conversion additive of the present invention requires very little addition and has virtually no impact on the absorption of light in the 400nm band by the battery itself, and has good application prospects. Attached Figure Description

[0043] The invention, its features, shape, and advantages will become more apparent from the following detailed description of non-limiting embodiments with reference to the accompanying drawings. Like reference numerals denote like parts throughout the drawings. The drawings are not drawn to scale; the emphasis is on illustrating the gist of the invention.

[0044] Figure 1 The ultraviolet absorption and fluorescence spectra of the color conversion aid Xa prepared in Example 1 are shown below.

[0045] Figure 2 The UV absorption and fluorescence spectra of the color conversion aid Xb prepared in Example 2 are shown. Detailed Implementation

[0046] The present invention will be further described below with reference to specific embodiments, but these are not intended to limit the invention.

[0047] Example 1

[0048] A color conversion aid Xa has the following specific structural formula:

[0049] .

[0050] Its preparation method includes the following steps:

[0051] (1) A mixed solution of 2-bromofluorene (245g), n-bromohexane (300g) and dichloromethane (500ml) was prepared. Potassium tert-butoxide (200g) was slowly added to the mixture under N2 atmosphere. After the addition was complete, the reaction was continued for 6h. After the reaction was completed, cold water and dichloromethane were added for extraction. The organic layer was taken and dried with anhydrous sodium sulfate. After filtration, the solution was concentrated under reduced pressure. The concentrate was recrystallized with methanol to obtain 9,9-dihexyl-2-bromofluorene (392g, 95%).

[0052]

[0053] 1 H NMR (300 MHz, CDCl3), δ (ppm): 7.24–7.73 (m, 7H), 1.97–2.03 (m, 4H), 1.10–1.19 (m, 12H), 0.81–0.85 (t, 6H), 0.62–0.67 (m, 4H,).

[0054] (2) The intermediate product (41.3 g) obtained in step (1) and 200 ml of anhydrous tetrahydrofuran were placed in a 500 ml round-bottom flask and cooled to -78 °C under N2 atmosphere. Then, n-butyllithium (65 ml, 1.6 M) was slowly added dropwise. After the addition was complete, the reaction was continued for one hour. Then, at the same temperature, isopropanol pinacol borate (20 g) was added to the reaction solution and the reaction was continued for 1 hour. After the reaction was completed, the temperature was raised to room temperature and ammonium chloride aqueous solution was added for quenching. The product was extracted with dichloromethane, concentrated, and finally purified by silica gel column chromatography to obtain 9,9-dihexyl-2-boronate fluorene (40.5 g, 88%).

[0055]

[0056] 1 H NMR (300 MHz, CDCl3), δ (ppm): 7.81-7.80 (d, 1H), 7.74-7.69 (m, 3H), 7.34-7.31 (m, 2H), 1.99-1.95 (m, 4H), 1.39 (s, 12H), 1.11-1.01 (m, 12H),0.77-0.73 (t, 6H),0.60-0.57 (m, 4H).

[0057] (3) The intermediate product (48g), 4,7-dibromobenzothiazole (14g), PbCl2(PPh3)2 (100mg) and potassium carbonate (30g) obtained in step (2) were added to the reactor and deoxygenated by nitrogen. Then, N,N-dimethylformamide (DMF, 45mL) was injected into the reaction vessel under a nitrogen atmosphere, and then deionized water (200mL) that had been deoxygenated by nitrogen bubbling was added to the reaction vessel. The reaction was stirred at 90°C for 4h. After the reaction was completed, deionized water (2L) was added to obtain a precipitate. The precipitate was dissolved in ethyl acetate (500mL), and n-hexane (150mL) was added. A black precipitate was precipitated. After removing the black precipitate, the organic solution was concentrated by vacuum distillation. The concentrate was recrystallized with isopropanol (IPA) to obtain the color conversion aid Xa (36g, 90%).

[0058]

[0059] 1 H NMR (300 MHz, CDCl3), δ (ppm): 8.05 (s, 2H), 8.01 (m, 2H), 7.89 (d, J= 8.6 Hz, 4H), 7.80 (m, 2H), 7.48 (m, 2H), 7.37 (m, 4H), 1.99-1.95 (m, 8H),1.39 (s, 24H), 1.11-1.01 (m, 24H), 0.77-0.73 (t, 12H),0.60-0.57 (m, 8H).

[0060] UV-vis spectrum (chloroform): λ max =320nm; Fluorescence measurement (chloroform): λ max =520nm. The UV absorption and fluorescence spectra of the color conversion aid Xa are shown below. Figure 1 As shown.

[0061] Example 2

[0062] A color conversion aid Xb has the following specific structural formula:

[0063] .

[0064] The preparation method is basically the same as that in Example 1, except that the 4,7-dibromobenzothiazole (14.5g) in step (3) is replaced with 4,7-dibromo-5,6-difluorobenzothiazole (14.5g), and finally the color conversion aid Xb (34g, 86%) is obtained.

[0065] 1H NMR (300 MHz, CDCl3), δ (ppm):7.93 (d, J = 7.9 Hz, 4H), 7.87 (d, J =7.9 Hz, 2H), 7.84-7.78 (m, 2H), 7.49(d, J = 7.0Hz, 2H), 7.43-7.34 (m, 4H),2.01-2,06 (m, 8H), 1.40 (s, 24H), 1.11-1.01 (m, 24H), 0.77-0.73 (t, 12H),0.60-0.57 (m, 8H).

[0066] UV-vis spectrum (chloroform): λ max =292,317 nm. Fluorescence measurement (chloroform): λ max =481nm. The UV absorption and fluorescence spectra of the color conversion aid Xb are shown below. Figure 2 As shown.

[0067] Example 3

[0068] A color conversion aid Xc has the following specific structural formula:

[0069] .

[0070] The preparation method is basically the same as that in Example 1, except that 1-bromohexane in step (1) is replaced with 1-bromo-5-hexene, and finally the color conversion aid Xc (35g, 89%) is obtained.

[0071] 1 H NMR (300 MHz, CDCl3), δ (ppm): 8.05 (s, 2H), 8.01 (m, 2H), 7.89 (d, J= 8.6 Hz, 4H), 7.80 (m, 2H), 7.48 (m, 2H), 7.37 (m, 4H), 5.81-5.93(m,2H),5.17-5.04(m,4H), 2.67-2.6(m,4H),1.99-1.95 (m, 8H), 1.39 (s, 24H), 1.11-1.01(m, 24H), 0.77-0.73 (t, 12H).

[0072] UV-vis spectrum (chloroform): λ max =321nm; Fluorescence measurement (chloroform): λ max =519nm.

[0073] Example 4

[0074] A color conversion aid Xd has the following specific structural formula:

[0075] .

[0076] The preparation method is basically the same as that in Example 1, except that 4,7-dibromobenzothiazole (14.5g) in step (3) is replaced with 4,7-dibromo-2-butylbenzotriazole (15g), and finally the color conversion aid Xd (yield 84%) is obtained.

[0077] 1 H NMR (300 MHz, CDCl3), δ (ppm): 8.05 (s, 2H), 8.01 (m, 2H), 7.89 (d,4H), 7.80 (m, 2H), 7.48 (m, 2H), 7.37 (m,4H), 4.93 (t, 2H), 1.99-1.95 (m, 8H), 1.39 (s, 24H), 1.11-1.01 (m, 24H), 0.77-0.73 (t, 17H), 0.60-0.57 (m, 12H).

[0078] UV-vis spectrum (chloroform): λ max =283,311nm; Fluorescence measurement (chloroform): λ max =469nm.

[0079] Example 5

[0080] A color conversion aid Xe, with the following specific structural formula:

[0081] .

[0082] Its preparation method includes the following steps:

[0083] The preparation method is basically the same as that in Example 1, except that the 4,7-dibromobenzothiazole (14.5g) in step (3) is replaced with 4,7-dibromo-5,6-difluoro-2-butylbenzotriazole (15g), and finally the color conversion aid Xe (yield 81%) is obtained.

[0084] 1H NMR (300 MHz, CDCl3), δ (ppm):8.05 (s, 2H), 8.04 (m, 2H), 7.83 (m,2H), 7.53 (m, 2H), 7.39 (m,4H), 4.94 (t, 2H), 2.02-1.98 (m, 8H), 1.40 (s, 24H), 1.11-1.01 (m, 24H), 0.77-0.73 (t, 17H), 0.60-0.57 (m, 12H).

[0085] UV-vis spectrum (chloroform): λ max =281,308nm; Fluorescence measurement (chloroform): λ max =461nm.

[0086] Application Example 1

[0087] A color-converting adhesive film, the raw materials for which are prepared include the following components in parts by weight:

[0088] 97.9 parts by weight of ethylene-1-octene copolymer;

[0089] 0.6 parts by weight of the main crosslinking agent;

[0090] 0.4 parts by weight of crosslinking agent;

[0091] 0.4 parts by weight of silane coupling agent monomer;

[0092] 0.6 parts by weight of silane coupling agent oligomer;

[0093] Color conversion agent 0.1 parts by weight;

[0094] Color conversion aid Xa 0.01 parts by weight;

[0095] The ethylene-1-octene copolymer is LUCENE from LG Chem of South Korea, the main crosslinking agent is TAEC from Hubei Chengfeng Chemical Co., Ltd., the co-crosslinking agent is TAIC from Xiangyun Rubber & Plastics, the silane coupling agent monomer is A173 from Xuanhao New Materials, the silane coupling agent oligomer is NXH-552 from Nanjing Xuanhao New Materials, the color conversion agent is Example 1 described in the specification of the applicant in application number 2024113947766, and the color conversion aid Xa is derived from Example 1;

[0096] The specific preparation method is as follows: ethylene-1-octene copolymer, main crosslinking agent, co-crosslinking agent, silane coupling agent monomer, silane coupling agent oligomer, color conversion agent and color conversion aid Xa are mixed and cast by casting machine to obtain color conversion film.

[0097] Application Example 2

[0098] The preparation method and added medium in this application example are the same as in application example 1. The difference is that the color conversion aid is Xb obtained in example 2.

[0099] Application Example 3

[0100] The preparation method and added medium in this application example are the same as in application example 1. The difference is that the color conversion aid is Xd obtained in example 4.

[0101] Application Example 4

[0102] The preparation method and added medium in this application example are the same as in application example 1. The difference is that the color conversion agent is replaced with Rhodamine B from Bidex Pharmaceuticals.

[0103] Application Example 5

[0104] The preparation method and added medium in this application example are the same as in application example 1. The difference is that the color conversion agent is replaced with the fluorescent pigment PV-PA680 from Tianjin Saiterui Technology.

[0105] Comparative Example

[0106] The preparation method and the added medium in this comparative example are the same as in application example 1, except that the color conversion aid Xa is not added. Finally, a conventional POE film is obtained after casting and extrusion.

[0107] The optical properties of the POE films prepared in Examples 1-5 and the comparative examples were compared and tested, and the properties are shown in Table 1.

[0108] Table 1

[0109] Main absorption peak (nm) Excitation wavelength (nm) Main emission peak (nm) Comparative example 330 330 362,372 Application Example 1 330 330 530 Application Example 2 330 330 490 Application Example 3 330 330 470 Application Example 4 352 352 530 Application Example 5 368 368 530

[0110] Comparing the relevant parameters of Application Examples 1-5 with those of the comparative examples, it can be observed that after adding the self-made color light conversion aid, the POE film in this invention can increase the emitted light of the film, which originally could only emit in the ultraviolet light region, to the yellow light region of about 500nm. This proves that the color light conversion aid in this invention can effectively convert the high-energy light absorbed by traditional color light conversion into more gentle visible light. This not only further improves the utilization of ultraviolet light, but also effectively reduces the damage of ultraviolet light to solar cells and improves the service life of the device. In addition, it can be seen from Application Examples 4 and 5 that the color light conversion aid of this invention can also be used in conjunction with commercially available color light conversion agents to achieve the same results, demonstrating strong versatility.

[0111] Those skilled in the art should understand that variations can be implemented by combining existing technology with the above embodiments, which will not be elaborated here. Such variations do not affect the essence of the present invention, and will not be elaborated here either.

[0112] The preferred embodiments of the present invention have been described above. It should be understood that the present invention is not limited to the specific embodiments described above, and the devices and structures not described in detail should be understood as being implemented in a conventional manner in the art. Any person skilled in the art can make many possible variations and modifications to the technical solutions of the present invention using the methods and techniques disclosed above, or modify them into equivalent embodiments with equivalent changes, without departing from the scope of the present invention. This does not affect the essential content of the present invention. Therefore, any simple modifications, equivalent changes, and modifications made to the above embodiments based on the technical essence of the present invention without departing from the content of the present invention's technical solutions still fall within the protection scope of the present invention.

Claims

1. A color conversion aid, characterized in that: Including compounds having the structure shown in (Ⅰ): (Ⅰ) Wherein, R1 and R2 are each independently selected from H, substituted or unsubstituted alkyl, substituted or unsubstituted alkenyl, substituted or unsubstituted heteroalkyl, substituted or unsubstituted aryl, substituted or unsubstituted heteroaryl, substituted or unsubstituted amino, substituted or unsubstituted amide, substituted or unsubstituted cyclic imino, substituted or unsubstituted alkoxy, substituted or unsubstituted carboxyl, substituted or unsubstituted ester, and substituted or unsubstituted carbonyl, and R1 and R2 are not both H; the substituted substituents include fluorine, chlorine, bromine, iodine, C1-C1, and C2-C2. 20 Hydroxyl group, C1-C 20 Ester group, C1-C 20 Carboxyl group, C1-C 20 Amino, C1-C 20 Thiol group, C1-C 20 amide group, C1-C 20 carbonyl group, C1-C 20 Alkoxy, C6~C 20 Aryl, C4~C 20 heteroaryl, C1-C 20 Alkyl, C1-C 20 Heteroalkyl, C1-C 20 alkenyl, C1-C 20 Any one of the imino groups; X is a sulfur atom or a nitrogen atom substituted by an alkyl chain; Y and Z are each independently selected from any one of H, fluorine, chlorine, bromine, alkyl, and alkoxy.

2. The color conversion aid according to claim 1, characterized in that, R1 and R2 are each independently selected from H, substituted or unsubstituted C1 to C2. 20 Alkyl, substituted or unsubstituted C1-C 20 Any one of the alkenyl groups; The nitrogen atom substituted in the alkyl chain refers to C1 to C2. 20 Nitrogen atoms substituted with alkyl groups; Y and Z are selected from C1 to C2. 20 Alkyl or alkoxy groups.

3. The color conversion aid according to claim 2, characterized in that, The color conversion aid comprises any one or a combination of at least two of the following compounds: 。 4. A color-converting adhesive film, characterized in that, The raw materials for preparing the color conversion film include the color conversion additive, color conversion agent and resin as described in any one of claims 1 to 3.

5. The color-converting adhesive film according to claim 4, characterized in that, The color conversion aid has a mass percentage of 0.001 to 0.1% in the raw materials.

6. The color-converting adhesive film according to claim 4, characterized in that, The resin includes any one or a combination of at least two of polyvinyl acetate, polyethylene-octene copolymer, polyvinyl butyral, hot-melt polyolefin particles, or thermoplastic polyurethane.

7. The color-converting adhesive film according to claim 4, characterized in that, The raw materials for preparing the light conversion adhesive film also include any one or a combination of at least two of the following: main crosslinking agent, co-crosslinking agent, silane coupling agent, thickening agent, or inorganic powder. The main crosslinking agent grafts the color conversion aid onto the color conversion film by forming C-C bonds through free radical coupling, thereby efficiently fixing the target molecules onto the color conversion film.

8. The color-converting adhesive film according to claim 4, characterized in that, The absorption peak of the color-converting agent is below 400 nm; The color conversion agent includes any one or a mixture of at least two of the following: organic fluorescent dyes, rare earth organic complexes, rare earth inorganic compounds, CdSe quantum dots, or perovskite quantum dots.

9. A photovoltaic module, characterized in that, The photovoltaic module includes the color conversion film and the battery as described in any one of claims 4 to 8.

10. The photovoltaic module according to claim 9, characterized in that, The battery includes any one or a combination of at least two of the following: indium gallium arsenide solar cells, organic solar cells, perovskite solar cells, cadmium sulfide / cadmium telluride solar cells, amorphous silicon solar cells, microcrystalline silicon solar cells, and crystalline silicon solar cells.

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