Permeable absorption film layer of solar photovoltaic module

Abstract

The invention discloses a solar photovoltaic module transmission absorption film layer, and belongs to the technical field of solar photovoltaic modules. Comprising a gradient refraction surface layer, a three-dimensional light guide absorption layer, a light conversion module and a wrinkle reflection supporting layer, the gradient refraction surface layer comprises a first film layer, and a first array of gradient refraction prisms is arranged on the top surface of the first film layer; the inclination angle of the gradient refraction prism is in linear transition from 50 degrees at the top to 30 degrees at the bottom; the three-dimensional light guide absorption layer is arranged on the bottom surface of the gradient refraction surface layer; the three-dimensional light guide absorption layer comprises a hydrogenated amorphous silicon film, and a second array of first hexagonal honeycomb cavities is integrally formed on the top surface of the hydrogenated amorphous silicon film; a selective light hole is formed in the bottom surface of the first hexagonal honeycomb cavity; a longitudinal guide belt is arranged at the top of the first hexagonal honeycomb cavity; according to the solar photovoltaic module, the photoelectric conversion efficiency and the bending resistance of the solar photovoltaic module can be improved through the absorption film layer.

Description

Technical Field

[0001] The invention specifically relates to a solar photovoltaic component through-absorbing film layer, and belongs to the technical field of solar photovoltaic components. Background Art

[0002] Solar concentrators (LSCs) are fluorescent devices that absorb sunlight and use the total reflection effect to waveguide fluorescence to the edge of the panel, and then couple to photovoltaic cells to generate electricity. The quantum clipping effect is an optical phenomenon in low-dimensional semiconductor materials. The material based on this effect can absorb a high-energy photon and generate two low-energy photons; therefore, LSCs based on this effect can break through the internal quantum efficiency limit of the above-mentioned device; and the energy of the two photons emitted by quantum clipping is much smaller than the band edge energy gap of the fluorescent material, thereby effectively reducing the self-absorption loss of the LSC; existing solar concentrators, such as China Patent Authorization Announcement No.: CN111170646B, disclose a solar concentrator based on the quantum clipping effect, which is mainly composed of a solar concentrator with quantum clipping effect. Quantum dots with quantum shearing effect are used as light absorption and emission materials, and polymers are used as optical waveguide media; the large extinction coefficient of quantum dots is used to efficiently absorb light, and a large spectral Stokes shift is achieved through its quantum shearing effect to effectively reduce self-absorption losses, while achieving doubled fluorescence quantum efficiency, and ultimately achieving photoelectric conversion through the polymer optical waveguide to the solar cell on the side; however, the film layer of existing solar concentrators cannot be bent. Once the film layer is bent, the quantum shearing layer will be damaged, thereby affecting the light conversion efficiency. In addition, the overall photoelectric conversion efficiency of the film layer of existing solar concentrators is low. Summary of the invention

[0003] In order to solve the above problems, the present invention proposes a solar photovoltaic component through an absorption film layer, which can improve the photoelectric conversion efficiency and anti-bending ability of solar photovoltaic.

[0004] The solar photovoltaic module of the present invention has a transparent absorption film layer, comprising: A gradient refractive surface layer, the gradient refractive surface layer comprising a first film layer, a first array of gradient refractive prisms being arranged on the top surface of the first film layer; the inclination angle of the gradient refractive prisms linearly transitions from 50° at the top to 30° at the bottom; The gradient refraction prism of the gradient refraction surface layer changes linearly from 50° at the top to 30° at the bottom; when the incident light penetrates the gradient refraction prism, the refraction angle changes continuously, and the refractive index gradient transitions, which significantly reduces Fresnel reflection and surface reflection loss, and the reflectivity is less than 2%; the side wall of the prism produces secondary refraction for oblique incident light, extending the effective incident angle range to ±70°; A three-dimensional light-guiding absorption layer, wherein the three-dimensional light-guiding absorption layer is arranged on the bottom surface of the gradient refractive surface layer; the three-dimensional light-guiding absorption layer comprises a hydrogenated amorphous silicon film, wherein the top surface of the hydrogenated amorphous silicon film is integrally formed with a second array of first hexagonal honeycomb cavities; a selective light-transmitting hole is provided on the bottom surface of the first hexagonal honeycomb cavity; a longitudinal guide belt is provided on the top of the first hexagonal honeycomb cavity; the three-dimensional light-guiding absorption layer is located below the gradient refractive surface layer, and is formed into a hexagonal honeycomb array by an amorphous silicon film; the first hexagonal honeycomb cavity has a depth of 50 to 200 μm and a wall thickness of 10 μm; the incident light is confined within the honeycomb wall by total internal reflection, and the optical path is extended by more than 3 times that of the planar structure ; Micropores are set at the bottom of the first hexagonal honeycomb cavity as selective light-transmitting holes, through which selective transmission can be performed, infrared light and ultraviolet light wavelengths are transmitted to the lower layer, thereby allowing light of specific wavelengths to be transmitted to the lower layer for secondary absorption; the honeycomb wall of the first hexagonal honeycomb cavity forms a high refractive index difference interface with the air cavity, and the incident light undergoes multiple total internal reflections in the wall (the average number of reflections is ≥5 times), and the optical path is extended from 1~2μm to 5~10μm, and the absorption efficiency is increased to 16~21% compared with the planar structure; the second array is a first hexagonal honeycomb cavity with a periodicity of 10μm, forming a photonic crystal band gap, inhibiting the escape of light of specific wavelengths, and achieving an increase in the absorption rate of specific bands; A light conversion module, the light conversion module comprising a second film layer, the bottom surface of the second film layer is integrally formed with a second hexagonal honeycomb cavity, and the inner wall of the second hexagonal honeycomb cavity is provided with a light conversion layer for converting ultraviolet light into visible light; A corrugated reflective support layer, wherein the corrugated reflective support layer is arranged on the bottom surface of the three-dimensional light-guiding absorption layer; the corrugated reflective support layer comprises a TPU substrate, the surface of the TPU substrate is a corrugated surface, and the corrugated wavelength of the corrugated surface is 100 μm; a reflective laminate is arranged on the top surface of the corrugated reflective support layer; the corrugated reflective support layer is attached to the surface of the solar photovoltaic module; the reflective laminate can be re-reflected to the light conversion layer by an inclination, and the corrugated reflective support layer adopts a wavy corrugated structure, and when the absorption film layer is bent, the stress is compensated by the unfolding of the corrugations, that is, the integrity of the reflective laminate is maintained by unfolding the corrugations, and the damage of the reflective laminate due to bending is avoided; The spectra of specific wavelength bands are captured and absorbed by the three-dimensional light-guiding absorption layer, and non-specific wavelength bands are discharged through the selective light-transmitting holes. The second hexagonal honeycomb cavity of the light conversion module and the folded reflective support layer form a reflective three-dimensional light conversion space. The non-specific wavelength band passes through the three-dimensional light conversion space and is reflected by the folded reflective support layer to the three-dimensionally arranged light conversion layer. After the wavelength band is converted by the light conversion layer, it re-enters the three-dimensional light-guiding absorption layer; the reflected visible light is secondarily absorbed by the three-dimensional light-guiding absorption layer; The gradient refractive surface layer, the three-dimensional light-guiding absorption layer, the light conversion layer and the wrinkled reflective support layer are integrally formed by hot pressing.

[0005] Furthermore, a PI film is arranged between the three-dimensional light-guiding absorption layer and the light conversion layer; a heat dissipation channel is opened on the top surface of the PI film; the heat dissipation channel is filled with phase change filler; a sealing covering layer is arranged on the top surface of the corrugated reflective support layer; the sealing covering layer is fixed to the corrugated reflective support layer by hot pressing; the heat dissipation channel includes a main channel arranged on the top and bottom surfaces of the PI film, and a plurality of irregular branch channels are opened between the two main channels. By opening a heat dissipation channel on the top surface of the PI film, a microchannel network is formed on the bottom surface of the absorption film layer; and a phase change filler is injected into the microchannel network. The phase change filler is paraffin / carbon nanotube phase change material with a melting point of 45~50℃. After the phase change material absorbs the heat of the three-dimensional light-guiding absorption layer, the phase change filler heats up and liquefies, and flows autonomously between the irregular branch channel and the main channel through capillary force. The measured thermal conductivity is increased to 8.3W / mK (pure paraffin is 0.2W / mK); pump-free self-circulating heat dissipation is achieved through capillary action, which can reduce the working temperature by 5~16℃ and improve the working efficiency of the three-dimensional light-guiding absorption layer.

[0006] Furthermore, each of the gradient refractive prisms faces a first hexagonal honeycomb cavity; the first hexagonal honeycomb cavity and the gradient refractive prism maintain a 1:1 correspondence relationship, and the deviation is ±2 μm.

[0007] Furthermore, the first film layer is a PET flexible substrate, the first array is made of a PDMS film or a fluorinated acrylate film; and the second film layer is a PI film.

[0008] Furthermore, the top surface of the gradient refractive surface layer is coated with a self-cleaning anti-reflection layer; the self-cleaning anti-reflection layer is formed by reactively sputtering hydrophobic fluorine-doped SnO2 onto the gradient refractive surface layer; the self-cleaning anti-reflection layer has a thickness of 5 to 10 nm and has both anti-reflection and anti-fouling functions.

[0009] Furthermore, the light conversion layer is a quantum tailoring layer, which is composed of Eu³+ / Tb³+ co-doped fluorescent material; it converts ultraviolet light (300-380nm) that penetrates the three-dimensional light-guiding absorption layer into visible light (450-650nm) with a conversion efficiency of 92%; and re-projects the visible light to the three-dimensional light-guiding absorption layer, where it is reabsorbed and used.

[0010] Furthermore, the reflective stack is alternately deposited TiO2 layers and SiO2 layers; the number of layers of the reflective stack is 3 to 5; the single layer thickness of the TiO2 layer is 60nm, and the single layer thickness of the SiO2 layer is 100nm; the ultraviolet light is reflected to the light conversion layer; the ultraviolet light reflectivity reaches 99.6%.

[0011] Furthermore, the longitudinal cross-section of the gradient refractive prism is a triangular or trapezoidal structure.

[0012] Compared with the prior art, the solar photovoltaic module of the present invention captures and absorbs the spectrum of a specific band through the absorption film layer and the three-dimensional light-conducting absorption layer, which can inhibit the escape of light of a specific wavelength, and discharge non-specific bands through selective light-transmitting holes to reduce the loss of hot carriers. The micropores only allow low-energy carriers to be projected through the quantum confinement effect, while high-energy hot carriers are confined to the inside of the three-dimensional light-conducting absorption layer; the three-dimensional light-conducting absorption layer realizes an improvement in the absorption rate of a specific band, and after light conversion in the non-specific band, it is absorbed through reflection, which can improve the photoelectric conversion efficiency of solar photovoltaics and ensure durability and anti-bending ability. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a schematic diagram of the overall structure of the solar photovoltaic module through the absorption film layer of the present invention.

[0014] Figure 2 It is a schematic diagram of the overall structure of the gradient refractive surface layer of the present invention.

[0015] Figure 3 It is a schematic diagram of the overall structure of the three-dimensional light-guiding absorption layer of the present invention.

[0016] Figure 4 It is a schematic diagram of the overall structure of the optical conversion module of the present invention with the bottom surface facing upward.

[0017] Figure 5 It is a schematic diagram of the overall structure of the wrinkled reflective support layer of the present invention.

[0018] Figure numerals: 1. gradient refractive surface layer, 2. first film layer, 3. gradient refractive prism, 4. three-dimensional light-guiding absorption layer, 5. hydrogenated amorphous silicon film, 6. first hexagonal honeycomb cavity, 7. light conversion module, 8. second film layer, 9. second hexagonal honeycomb cavity, 10. light conversion layer, 11. pleated reflective support layer. DETAILED DESCRIPTION

[0019] Example: like Figures 1 to 5 The solar photovoltaic module shown has an absorber film layer, including: A gradient refractive surface layer 1, wherein the gradient refractive surface layer 1 comprises a first film layer 2, wherein a first array of gradient refractive prisms 3 is disposed on the top surface of the first film layer 2; wherein the gradient refractive prisms 3 have an inclination angle that linearly transitions from 50° at the top to 30° at the bottom; The gradient refraction prism 3 of the gradient refraction surface layer 1 linearly changes its inclination angle from 50° at the top to 30° at the bottom; when the incident light penetrates the gradient refraction prism 3, the refraction angle changes continuously, the refractive index gradient transitions, the Fresnel reflection is significantly reduced, the surface reflection loss is reduced, and the reflectivity is less than 2%; the side wall of the prism produces secondary refraction for the oblique incident light, and the effective incident angle range is extended to ±70°; during processing, electron beam lithography is used on a silicon wafer to process a master mold of the gradient inclination prism, and ion beam etching is used to correct the angle tolerance of the prism side wall; then, the PDMS prepolymer is The PDMS was poured into the master mold, and after curing, the PDMS was peeled off from the master mold to obtain the prism film layer. Then, the inclination gradient distribution of the prism film layer was detected by a white light interferometer to ensure that the linear error of the angle change was less than 1%. Then, the surface of the PET flexible substrate (thickness 200 μm) was treated with oxidation plasma (power 150 W, time 120 s). The prism film layer and the PET flexible substrate were aligned by a nano-level alignment system, and a light-curing adhesive was sprayed between the PET flexible substrate and the prism film layer, and integrated curing was achieved to obtain the first film layer 2. A three-dimensional light-guiding absorption layer 4, which is disposed on the bottom surface of the gradient refractive surface layer 1; the three-dimensional light-guiding absorption layer 4 comprises a hydrogenated amorphous silicon film 5, the top surface of which is integrally formed with a second array of first hexagonal honeycomb cavities 6; the bottom surface of the first hexagonal honeycomb cavity 6 is provided with a selective light-transmitting hole; the top of the first hexagonal honeycomb cavity 6 is provided with a longitudinal guide belt; The three-dimensional light-guiding absorption layer 4 is located below the gradient refractive surface layer 1 and is made of amorphous silicon thin film in a hexagonal honeycomb array; the first hexagonal honeycomb cavity 6 has a depth of 50-200 μm and a wall thickness of 10 μm; the incident light is confined within the honeycomb wall by total internal reflection, and the optical path is extended by more than 3 times that of the planar structure; micropores are arranged at the bottom of the first hexagonal honeycomb cavity 6 as selective light-transmitting holes, through which selective transmission can be performed, such as opening the selective light-transmitting hole as a 5 μm micropore, which is close to the wavelength of visible light, and utilizing the waveguide cutoff effect to allow only infrared light greater than 800 nm to transmit through the three-dimensional light-guiding absorption layer 4, thereby reducing the loss of hot carriers; for another example, opening the selective light-transmitting hole as a 2.5 μm micropore, the ultraviolet wavelength is transmitted to the lower layer, thereby allowing light of a specific wavelength to be transmitted to the lower layer for secondary absorption; during processing, the surface of the 5 μm hydrogenated amorphous silicon film 5 is first subjected to Etching is performed, and a hole is punched at the bottom of the first hexagonal honeycomb cavity 6 by a femtosecond laser, with an aperture error of less than 0.1μm; after etching is completed, it is adsorbed on a porous ceramic suction cup with an aperture of 10μm, and the vacuum pressure is -70KPa to prevent the first hexagonal honeycomb cavity 6 from collapsing; then, a longitudinal guide belt is processed, and silver glue is dotted on the top of the inner wall of the first hexagonal honeycomb cavity 6, and then a longitudinal guide belt with a width of 15μm is formed by screen printing; silver nanowires are coated on the top of the first hexagonal honeycomb wall with a line width of 15μm to form a vertical charge collection path, and the cavity of the first hexagonal honeycomb wall limits the carrier diffusion length to within the wall thickness range (<10μm), so that the carriers are quickly collected before recombination, and the array of the first hexagonal honeycombs forms an array of independent units (0.01mm² / independent unit), and the leakage current is reduced to 10 by a distributed Schottky barrier. ﹣7 A / cm 2 ; The first hexagonal honeycomb cavity 6 can capture wide-angle light. The symmetrical structure of the first hexagonal honeycomb cavity 6 allows light to be effectively captured from any angle. The absorption efficiency fluctuates by less than 5% within the incident angle range of ±70°. The honeycomb wall of the first hexagonal honeycomb cavity 6 forms a high refractive index difference interface with the air cavity. The incident light undergoes multiple total internal reflections in the wall (the average number of reflections is ≥5 times), and the optical path is extended from 1~2μm to 5~10μm. Compared with the planar structure, the absorption efficiency is increased to 16~21%. The second array is the first hexagonal honeycomb cavity 6 with a periodicity of 10μm, forming a photonic crystal band gap, suppressing the escape of light of a specific wavelength (such as 300~500nm), and achieving an increase in the absorption rate in a specific band. A light conversion module 7, the light conversion module 7 comprises a second film layer 8, the bottom surface of the second film layer 8 is integrally formed with a second hexagonal honeycomb cavity 9, and the inner wall of the second hexagonal honeycomb cavity 9 is provided with a light conversion layer 10 for converting ultraviolet light into visible light; A corrugated reflective support layer 11, the corrugated reflective support layer 11 is arranged on the bottom surface of the three-dimensional light-guiding absorption layer 4; the corrugated reflective support layer 11 comprises a TPU substrate, the surface of the TPU substrate is a corrugated surface, and the corrugation wavelength of the corrugated surface is 100 μm; a reflective laminate is arranged on the top surface of the corrugated reflective support layer 11; the corrugated reflective support layer 11 is attached to the surface of the solar photovoltaic module; After preheating the TPU film at 120°C, it is placed in a negative pressure chamber (-80KPa), and the surface is adsorbed to form regular wrinkles with a wavelength of 100μm; and a reflective stack is set on the regular wrinkles, which can reflect the reflective stack back to the light conversion layer 10 by tilting. The wrinkle reflective support layer 11 adopts a wavy wrinkle structure. When the absorption film layer is bent, the stress is compensated by the wrinkle expansion, that is, the wrinkle expansion (when the bending radius is greater than 5mm, the amplitude is expanded from 20μm to 35μm) to maintain the integrity of the reflective stack; avoid the damage of the reflective stack due to bending; the reflectivity fluctuation is less than 3%; The gradient refractive surface layer 1, the three-dimensional light-guiding absorption layer 4, the light conversion layer 10 and the wrinkled reflective support layer 11 are integrally formed by hot pressing.

[0020] A PI film is arranged between the three-dimensional light-guiding absorption layer 4 and the light conversion layer 10; a heat dissipation channel is opened on the top surface of the PI film; the inside of the heat dissipation channel is filled with phase change filler; a sealing covering layer is arranged on the top surface of the corrugated reflective support layer 11; the sealing covering layer is hot-pressed and fixed to the corrugated reflective support layer 11; the heat dissipation channel includes a main channel arranged on the top and bottom surfaces of the PI film, and a plurality of irregular branch channels are opened between the two main channels.

[0021] A heat dissipation channel is opened on the top surface of the PI film, and a microchannel network is formed on the bottom surface of the absorption film layer; and a phase change filler is injected into the microchannel network. The phase change filler is a paraffin / carbon nanotube phase change material with a melting point of 45~50℃. After the phase change material absorbs the heat of the three-dimensional light-guiding absorption layer 4, the phase change filler heats up and liquefies, and flows autonomously between the irregular branch channel and the main channel through capillary force. The measured thermal conductivity is increased to 8.3W / mK (pure paraffin is 0.2W / mK); pump-free self-circulation heat dissipation is achieved through capillary action, which can reduce the working temperature by 5~16℃ and improve the working efficiency of the three-dimensional light-guiding absorption layer 4. The processing process of the heat dissipation channel of the PI film is as follows: the heat dissipation channel pattern is directly written by laser with a line width of 20μm, followed by O2 plasma etching with an etching depth of 50μm; then, the surface of the heat dissipation channel is sealed and packaged. During packaging, after waiting for the phase change material to solidify, an inorganic sealing layer is first processed on the top surface of the heat dissipation channel, and then the organic reinforcement layer is processed. The specific processing of the inorganic sealing layer is: PECVD is used to deposit SiNx (thickness 200nm), deposition parameters: SiH4 / NH3=1:4, pressure 100Pa, RF power 150W; the specific processing of the organic reinforcement layer is: spin coating polyparaxylene with a thickness of 5μm, deposition rate 0.5μm / h, and conformal coverage is completed at room temperature.

[0022] Each of the gradient refractive prisms 3 faces a first hexagonal honeycomb cavity 6 ; the first hexagonal honeycomb cavity 6 and the gradient refractive prism 3 maintain a 1:1 correspondence relationship, and the deviation is ±2 μm.

[0023] The first film layer 2 is a PET flexible substrate, the first array is made of a PDMS film or a fluorinated acrylate film; and the second film layer 8 is a PI film.

[0024] The top surface of the gradient refractive surface layer 1 is coated with a self-cleaning anti-reflection layer; the self-cleaning anti-reflection layer is formed by reactively sputtering hydrophobic fluorine-doped SnO2 onto the gradient refractive surface layer 1; the thickness of the self-cleaning anti-reflection layer is 5~10nm, and it has both anti-reflection and anti-fouling functions; fluorine doping induces a low energy state on the surface, and the water droplet contact angle is greater than 110°, reducing the efficiency attenuation caused by dust adhesion; the deposition process of the self-cleaning anti-reflection layer is as follows: reactive sputtering of fluorine-doped SnO2: the target material is SnO2, the O2 / Ar flow ratio is 1:20, the deposition temperature is 150°C, and the contact angle is greater than 110°.

[0025] The light conversion layer 10 is a quantum tailoring layer, which is composed of Eu³+ / Tb³+ co-doped fluorescent material; it converts ultraviolet light (300-380nm) that penetrates the three-dimensional light-guiding absorption layer 4 into visible light (450-650nm), with a conversion efficiency of 92%; and re-projects the visible light to the three-dimensional light-guiding absorption layer 4, which is reabsorbed and used by the three-dimensional light-guiding absorption layer 4.

[0026] The reflective stack is an alternately deposited TiO2 layer and SiO2 layer; the number of layers of the reflective stack is 3 to 5; the thickness of each TiO2 layer is 60 nm, and the thickness of each SiO2 layer is 100 nm; the ultraviolet light is reflected to the light conversion layer 10; the ultraviolet light reflectivity reaches 99.6%; The reflective stacking process is as follows: using plasma enhanced chemical vapor deposition: SiO2 layer: SiH4 / NH3 / N2 flow ratio 1:2:10, pressure 50 Pa, RF power 400 W, deposition rate 5 nm / s; TiO2 layer: TiCl4 / O2 flow ratio 1:5, pressure 30 Pa, deposition temperature 350°C.

[0027] The longitudinal cross section of the gradient refractive prism 3 is a triangle or trapezoid structure.

[0028] When the solar photovoltaic module through-absorbing film layer of the present invention is processed, for the above-mentioned threshold segment, the upper limit value of the threshold segment is used to prepare the solar photovoltaic module through-absorbing film layer, which has the following advantages: 1. The spectral absorption rate has been improved: it can collect light energy in the 300~1200nm band, and the average reflectivity is less than 2%; 2. Component efficiency: Laboratory tests show a conversion efficiency of 27.4% (AM1.5G standard illumination); 3. Durability: Passed IEC 61215 standard test (UV 15KWh / m 2 , wet heat 1000h, hot and cold cycle 200 times), efficiency attenuation <3%; 4. Bending test: Bending radius 5mm, efficiency retention rate after 1000 cycles>96%.

[0029] The above embodiments are only preferred implementations of the present invention, so any equivalent changes or modifications made according to the structures, features and principles described in the scope of application of the present invention are included in the scope of application of the present invention.

Claims

1. A solar photovoltaic module through an absorbing film layer, characterized in that: include: A gradient refractive surface layer, the gradient refractive surface layer comprising a first film layer, a first array of gradient refractive prisms being arranged on the top surface of the first film layer; the inclination angle of the gradient refractive prisms linearly transitions from 50° at the top to 30° at the bottom; A three-dimensional light-guiding absorption layer, wherein the three-dimensional light-guiding absorption layer is disposed on the bottom surface of the gradient refractive surface layer; the three-dimensional light-guiding absorption layer comprises a hydrogenated amorphous silicon film, wherein the top surface of the hydrogenated amorphous silicon film is integrally formed with a second array of first hexagonal honeycomb cavities; the bottom surface of the first hexagonal honeycomb cavity is provided with a selective light-transmitting hole; and the top of the first hexagonal honeycomb cavity is provided with a longitudinal guide belt; A light conversion module, the light conversion module comprising a second film layer, the bottom surface of the second film layer is integrally formed with a second hexagonal honeycomb cavity, and the inner wall of the second hexagonal honeycomb cavity is provided with a light conversion layer for converting ultraviolet light into visible light; A corrugated reflective support layer, the corrugated reflective support layer is arranged on the bottom surface of the three-dimensional light-guiding absorption layer; the corrugated reflective support layer comprises a TPU substrate, the surface of the TPU substrate is a corrugated surface, and the corrugation wavelength of the corrugated surface is 100 μm; a reflective laminate is arranged on the top surface of the corrugated reflective support layer; the corrugated reflective support layer is attached to the surface of the solar photovoltaic module; The gradient refractive surface layer, the three-dimensional light-guiding absorption layer, the light conversion layer and the wrinkled reflective support layer are integrally formed by hot pressing.

2. The solar photovoltaic module through absorption film layer according to claim 1, characterized in that: A PI film is arranged between the three-dimensional light-guiding absorption layer and the light conversion layer; a heat dissipation channel is opened on the top surface of the PI film; the heat dissipation channel is filled with phase change filler; a sealing covering layer is arranged on the top surface of the corrugated reflective support layer; the sealing covering layer is fixed to the corrugated reflective support layer by hot pressing.

3. The solar photovoltaic module through absorption film layer according to claim 2, characterized in that: The heat dissipation flow channel includes main flow channels arranged on the top surface and the bottom surface of the PI film, and a plurality of irregular branch flow channels are opened between two of the main flow channels.

4. The solar photovoltaic module transmission absorption film layer according to claim 1, characterized in that: Each of the gradient refractive prisms faces a first hexagonal honeycomb cavity.

5. The solar photovoltaic module transmissive absorption film layer according to claim 1, characterized in that: The first film layer is a PET flexible substrate, the first array is made of a PDMS film or a fluorinated acrylate film; and the second film layer is a PI film.

6. The solar photovoltaic module transmissive absorption film layer according to claim 1, characterized in that: The top surface of the gradient refractive surface layer is coated with a self-cleaning anti-reflection layer; the self-cleaning anti-reflection layer is formed by reactively sputtering hydrophobic fluorine-doped SnO2 onto the gradient refractive surface layer.

7. The solar photovoltaic module transmissive absorption film layer according to claim 1, characterized in that: The light conversion layer is a quantum tailoring layer, and the quantum tailoring layer is composed of Eu³+ / Tb³+ co-doped fluorescent material.

8. The solar photovoltaic module transmissive absorption film layer according to claim 1, characterized in that: The reflective stack is composed of alternately deposited TiO2 layers and SiO2 layers; the number of layers of the reflective stack is 3 to 5; the thickness of each TiO2 layer is 60 nm, and the thickness of each SiO2 layer is 100 nm.

9. The solar photovoltaic module transmissive absorption film layer according to claim 1, characterized in that: The longitudinal cross section of the gradient refractive prism is a triangle or trapezoid structure.

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