CN210607278U - Spectrum down-conversion antireflection film and laminated solar cell - Google Patents

Spectrum down-conversion antireflection film and laminated solar cell Download PDF

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CN210607278U
CN210607278U CN201921130031.3U CN201921130031U CN210607278U CN 210607278 U CN210607278 U CN 210607278U CN 201921130031 U CN201921130031 U CN 201921130031U CN 210607278 U CN210607278 U CN 210607278U
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conversion
layer
solar cell
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spectrum down
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郑将辉
徐成
易海芒
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Shenzhen Heijing Optoelectronic Technology Co.,Ltd.
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Shenzhen Black Crystal Photoelectric Technology Co ltd
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    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E10/00—Energy generation through renewable energy sources
    • Y02E10/50—Photovoltaic [PV] energy
    • Y02E10/52—PV systems with concentrators
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E10/00—Energy generation through renewable energy sources
    • Y02E10/50—Photovoltaic [PV] energy
    • Y02E10/544—Solar cells from Group III-V materials
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E10/00—Energy generation through renewable energy sources
    • Y02E10/50—Photovoltaic [PV] energy
    • Y02E10/547—Monocrystalline silicon PV cells
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
    • Y02P70/50—Manufacturing or production processes characterised by the final manufactured product

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Abstract

The utility model discloses a spectrum down-conversion subtracts anti-membrane and tandem solar cell, wherein this spectrum down-conversion subtracts anti-membrane includes: a matrix material layer which is a transparent matrix material; the light trapping velvet surface layer is arranged at the upper end of the matrix material layer; a spectrum down conversion material uniformly distributed within the spectrum down conversion antireflection film; wherein the mass proportion of the spectrum down-conversion material in the transparent matrix material is 0.001-30%, and the thickness of the light trapping suede layer is in the range of 0.01-20 mm. The utility model provides a spectrum down-conversion subtracts anti-membrane has conversion function under excellent light trapping performance, the high energy photon to have fine flexibility, can effectually be applied to in various types of tandem solar cell. The ultraviolet stability and the ultraviolet response performance of the perovskite silicon tandem solar cell are obviously improved.

Description

Spectrum down-conversion antireflection film and laminated solar cell
Technical Field
The utility model relates to a solar cell technical field especially relates to a spectrum down-conversion subtracts anti-membrane and tandem solar cell.
Background
The photovoltaic energy is green energy, does not consume fuel, does not discharge waste gas, does not have mechanical rotating parts, and is safe and reliable, so the photovoltaic energy is always the center of gravity for the development of the technical field of new energy.
Solar cells are the core of photovoltaic energy, and the improvement of efficiency and the reduction of cost are the main directions of solar cell research. Currently, one effective technical path to improve the efficiency of existing silicon single junction solar cells is to employ tandem solar cells. The perovskite/crystalline silicon tandem solar cell is a hot spot in the study of the tandem solar cell due to the simple preparation process, high efficiency and low cost.
The perovskite/crystalline silicon tandem solar cell device has the defects of poor ultraviolet stability, poor temperature and humidity stability and the like, and the defects influence the prospect of commercial application of the perovskite/crystalline silicon tandem solar cell.
How to improve the ultraviolet stability and efficiency of perovskite/crystalline silicon tandem solar cells is a problem to be solved urgently in the field.
SUMMERY OF THE UTILITY MODEL
The utility model provides a spectrum down-conversion subtracts anti-membrane and tandem solar cell aims at improving perovskite/crystal silicon tandem solar cell's ultraviolet stability and efficiency.
According to a first aspect of embodiments herein, there is provided a spectral down-conversion antireflection film for a solar cell, comprising: a matrix material layer which is a transparent matrix material;
the light trapping velvet surface layer is arranged at the upper end of the matrix material layer;
a spectrum down conversion material uniformly distributed within the spectrum down conversion antireflection film;
wherein the mass proportion of the spectrum down-conversion material in the antireflection film matrix is 0.001-30%, and the thickness of the light trapping texture surface layer is in the range of 0.01-20 mm.
In the spectrally down-converting antireflective film of the present invention, the matrix material layer comprises at least one of a vinyl acetate copolymer, polyvinyl butyral, polydimethylsiloxane, and polyolefin.
In the spectrum down-conversion antireflection film of the present invention, the shape of the light trapping texture surface includes at least one of a regular pyramid shape, an inverted pyramid shape, a random trap shape, a petal surface shape and a leaf surface shape.
In the spectrum down-conversion antireflection film of the present invention, the spectrum down-conversion material is a solid or a liquid; and/or the presence of a gas in the gas,
the absorption wavelength of the down-conversion material is within 200-500nm, and the emission wavelength of the down-conversion material is within 400-1200 nm;
when the spectral down-conversion material is a solid, the particle size of the solid is in the range of 1nm to 1 mm.
The utility model discloses an among the spectrum down-conversion antireflection coating, the spectrum down-conversion material includes at least one of tombarthite doping luminescent material, vanadate self-luminous material, tungstate self-luminous material, quantum dot luminescent material and organic dyestuff.
In the spectrum down-conversion antireflection film of the utility model, when the spectrum down-conversion material comprises the rare earth doped luminescent material,
the rare earth doped luminescent material comprises at least one of silicate, borate, tungstate, vanadate, chloroaluminate, nitride, oxynitride and phosphate;
the rare earth dopant of the rare earth doped luminescent material comprises Eu2+、Eu3+、Ce3+、Tb3+、Sm3+、Dy3+、Po3+、Pr3 +、Ho3+At least one of rare earth elements.
In the spectrum down-conversion antireflection film of the utility model, when the spectrum down-conversion material comprises the quantum dot luminescent material,
the quantum dot luminescent material comprises PbS, PbSe, ZnO and CsPbI3、CsPbBr3、ZnS、CuGaS2/ZnS、CsPbCl1.5Br1.5:Yb3+,Ce3+And CdxZn1-xAt least one of S/ZnS material.
In the spectrum down-conversion antireflection film of the utility model, when the spectrum down-conversion material comprises organic dye,
the organic dye comprises at least one of rhodamine dye, fluoroboric fluorescent dye, coumarin dye, triphenylamine dye, carbazole dye and metal complex dye.
According to a second aspect of embodiments of the present application, there is provided a tandem solar cell, comprising:
the bottom battery layer is a homojunction silicon solar battery based on Al-BSF or PERC;
the top battery layer is a top battery which adopts a transparent perovskite battery as a lamination layer;
a tunneling layer connecting the bottom cell and the top cell;
the spectrum down-conversion antireflection film is arranged on the upper part of the top cell.
The technical scheme provided by the embodiment of the application can have the following beneficial effects: the application designs a spectrum down-conversion antireflection film, a manufacturing method and a laminated solar cell adopting the spectrum down-conversion antireflection film, wherein a light trapping velvet surface layer with a good light trapping effect is arranged on the spectrum down-conversion antireflection film, and spectrum down-conversion materials are uniformly distributed in the spectrum down-conversion antireflection film, the mass ratio of the spectrum down-conversion materials to transparent matrix materials is 0.001-30%, and the thickness of the light trapping velvet surface layer is within the range of 0.01-20 mm. The spectrum down-conversion antireflection film has excellent light trapping performance and high-energy photon down-conversion function, and has good flexibility. The ultraviolet stability and the ultraviolet response performance of the perovskite silicon tandem solar cell are obviously improved.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required to be used in the description of the embodiments are briefly introduced below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without any creative effort.
Fig. 1 is a schematic cross-sectional view of a spectral down-conversion antireflection film of an embodiment of the present invention;
fig. 2 is a schematic cross-sectional view of a tandem solar cell according to an embodiment of the present invention;
fig. 3 is a surface topography of a tunnel scanning microscope (SEM) of a spectral down-conversion antireflective film of an embodiment of the invention;
fig. 4 is a graph of the IV performance test results of the embodiment of the present invention;
fig. 5 is a test chart of the response of the tandem solar cell to the ultraviolet ray and the infrared ray according to the embodiment of the present invention.
Description of reference numerals:
10. a spectral down-conversion antireflection film; 11. a layer of matrix material; 12. a light trapping velvet surface layer; 13. a spectral down-conversion material; 20. a top cell layer; 30. a tunneling layer; 40. a bottom cell layer.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, not all, of the embodiments of the present invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
It is also to be understood that the terminology used in the description of the invention herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used in the specification and the appended claims, the singular forms "a", "an", and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise.
It should be further understood that the term "and/or" as used in the specification and the appended claims refers to any and all possible combinations of one or more of the associated listed items, and includes such combinations.
Referring to fig. 1 and 2, the present invention discloses a spectrum down-conversion antireflection film 10, and the spectrum down-conversion antireflection film 10 is used in a tandem solar cell. The laminated solar cell sequentially comprises a spectrum conversion antireflection film 10, a top cell layer 20, a tunneling layer 30 and a bottom cell layer 40 from top to bottom, wherein the tunneling layer 30 is used for connecting the bottom cell layer 40 and the top cell layer 20.
Specifically, the tandem solar cell may be a silicon solar cell, a polycrystalline silicon solar cell, a CIGS, CZTS, perovskite, cadmium telluride, gallium arsenide, organic or dye sensitized, or the like single junction solar cell; or applied to perovskite/silicon laminated solar cells, III-V/silicon laminated solar cells, perovskite/CIGS laminated solar cells, perovskite/silicon laminated multi-junction laminated solar cells and the like. The spectrum down-conversion film can effectively convert the light of the laminated solar cell with weaker ultraviolet partial response into light with stronger visible partial response, so that the spectrum down-conversion antireflection film in the application is directly attached to the upper part of the laminated solar cell, the efficiency of the laminated solar cell can be improved, and the ultraviolet stability of the laminated solar cell is improved.
In an optional embodiment, the bottom cell layer of the laminated solar cell adopts a homojunction silicon solar cell based on Al-BSF or PERC; the top cell layer of the laminated solar cell adopts a transparent perovskite cell, and the bottom cell layer is connected with the top cell layer through a tunneling layer.
Referring to fig. 2, the spectrum down-conversion anti-reflection film comprises a matrix material layer 11, a light trapping velvet surface layer 12 and a spectrum down-conversion material 13, wherein the matrix material layer 11 is a transparent matrix material; the light trapping velvet surface layer 12 is arranged at the upper end of the substrate material layer; the spectral down-conversion material 13 is uniformly distributed in the spectral down-conversion antireflection film 10, that is, the spectral down-conversion material 13 is uniformly distributed in the matrix material layer 11 and the light trapping matte layer 12. The mass proportion of the spectrum down-conversion material 12 in the transparent matrix material is in the range of 0.001-30%, and the thickness of the light trapping suede layer 12 is in the range of 0.01-20 mm. Due to the spectrum down-conversion anti-reflection film spectrum down-conversion film, light of the laminated solar cell with weak ultraviolet part response can be effectively converted into light with strong visible part response, the efficiency of the solar cell can be improved, and the ultraviolet stability of the solar cell is improved.
In some alternative embodiments, the matrix material layer 11 includes at least one of an acetate copolymer (EVA), polyvinyl butyral (PVB), Polydimethylsiloxane (PDMS), and Polyolefin (PO). The substrate material layer can be any one of a vinyl acetate copolymer (EVA), a polyvinyl butyral (PVB), a Polydimethylsiloxane (PDMS) and a Polyolefin (PO), or a transparent layer formed by combining a plurality of the materials can be selected for transmitting sunlight, so that the solar cell absorbs the sunlight to generate electricity.
In alternative embodiments, the spectral down-conversion material 13 may be solid or liquid. The absorption wavelength of the spectrum down-conversion material is selected within 200-500nm, and the emission wavelength of the spectrum down-conversion material is selected within 400-1200 nm. If the spectrum down-conversion material is solid, the particle size of the spectrum down-conversion material is in the range of 1nm-1 mm.
In some alternative embodiments, the spectral down-conversion material 13 includes at least one of a rare earth doped luminescent material, a vanadate luminescent material, a tungstate luminescent material, a quantum dot luminescent material, and an organic dye. The spectrum material may be any one of a rare earth doped luminescent material, a vanadate luminescent material, a tungstate luminescent material, a quantum dot luminescent material, and an organic dye, or a combination of any multiple materials therein, which is not limited specifically herein.
In an alternative embodiment, when the spectral down-conversion material 13 comprises a rare-earth doped luminescent material, the rare-earth doped luminescent material comprises at least one of a silicate, a borate, a tungstate, a vanadate, a chloroaluminate, a nitride, an oxynitride, and a phosphate. The rare earth doped luminescent material may be selected from any one of silicate, borate, tungstate, vanadate, chloroaluminate, nitride, oxynitride, and phosphate, or a combination of any more thereof. The rare earth dopant of the rare earth-doped luminescent material comprises Eu2+、Eu3+、Ce3+、Tb3+、Sm3+、Dy3+、Po3+、Pr3+、Ho3+At least one of rare earth elements. The rare earth dopant of the rare earth-doped luminescent material may be Eu2+、Eu3+、Ce3+、Tb3+、Sm3+、Dy3+、Po3+、Pr3+、Ho3+Any one of rare earth elements, or a combination of any plurality of rare earth elements.
In an alternative embodiment, when the spectral down-conversion material 13 comprises a quantum dot luminescent material, the quantum dot luminescent material comprises PbS, PbSe, ZnO, CsPbI3、CsPbBr3、ZnS、CuGaS2/ZnS、CsPbCl1.5Br1.5:Yb3+,Ce3+And CdxZn1- xAt least one of S/ZnS material. The quantum dot luminescent material can be selected from PbS, PbSe, ZnO and CsPbI3、CsPbBr3、ZnS、CuGaS2/ZnS、CsPbCl1.5Br1.5:Yb3+,Ce3+And CdxZn1-xAny one of S/ZnS materials, or any combination of materials.
In an alternative embodiment, when the spectral down-conversion material 13 includes an organic dye, the organic dye includes at least one of a rhodamine-based dye, a fluoroborate fluorescent dye, a coumarin-based dye, a triphenylamine-based dye, a carbazole-based dye, and a metal complex dye. The organic dye can be any one of rhodamine dyes, fluoroboric fluorescent dyes, coumarin dyes, triphenylamine dyes, carbazole dyes and metal complex dyes, or the combination of any multiple dyes.
Referring to fig. 2 and 3, in some embodiments, light-trapping texture layer 12 may be in the shape of a regular pyramid, which reduces the reflectivity of the surface of the cell and increases the light flux by increasing the surface area of the solar cell. The shape of the light trapping texture may also be any one of an inverted pyramid shape, a random trap shape, a petal surface shape, and a leaf surface shape, or any combination of these shapes in some embodiments. In another embodiment, the shape of the light trapping suede can also adopt other irregular shapes.
The utility model also provides a manufacturing method of this spectrum down-conversion antireflection film. The method comprises the following specific steps:
mixing a matrix material and a curing agent in a liquid manner according to the mass ratio of 10:1 to obtain a matrix, and weighing the matrix;
mixing the spectrum down-conversion material into the weighed liquid, and uniformly mixing;
pouring the mixed liquid into a grinding tool to prepare a light trapping suede;
standing and curing.
In an alternative embodiment, the host material is Polydimethylsiloxane (PDMS), and the spectral down-conversion material is Eu-doped2+The strontium barium silicate down-conversion material.
Specifically, the steps of manufacturing the spectrum down-conversion antireflection film in this embodiment include:
first, Polydimethylsiloxane (PDMS) and a curing agent were liquid-mixed at a mass ratio of 10:1 as a matrix material and weighed,
secondly, the barium strontium silicate down-conversion material is mixed into the weighed Polydimethylsiloxane (PDMS) mixed liquid, and the mixture is uniformly mixed and stirred. The preferable mixing mass fraction is 0.3-1.0%;
thirdly, mixing Eu2+The PDMS liquid of the barium strontium silicate down-conversion material is poured into a silicon wafer grinding tool with an inverted pyramid suede for suede mirror image copying, and the poured liquid amount is accurately controlled to control the thickness of the anti-reflection film, wherein the preferable thickness is 0.2-0.5 mm.
Fourthly, after the Polydimethylsiloxane (PDMS) solution which is put into the grinding tool with the inverted pyramid suede is kept still for about 24 to 48 hours for solidification, the solidified anti-reflection film is taken down, and the anti-reflection film with the down-conversion function can be obtained.
As shown in fig. 3 the utility model discloses a surface morphology of the tunnel scanning microscope (SEM) of the anti-reflection membrane of spectrum down-conversion can see and carry out the anti-reflection membrane that the matte mirror image was duplicated through having the silicon chip grinding apparatus of reverse pyramid matte and have regular pyramid light trapping matte.
In the embodiment, the bottom cell layer adopts an n-type silicon solar cell based on a PERC structure, the front surface of the cell is polished, and the cell is provided with a pn junction with p + positioned at the top and the junction depth is 3 mu m; silicon dioxide with the diameter of about 1.5nm is grown on the front surface of the silicon chip to be used as a tunneling layer, a transparent perovskite battery is prepared to be used as a laminated top battery,
specifically, the top cell approach is as follows:
1.SnO2obtaining a middle tunneling layer;
2. preparation of FA by one-step ProcessxMA1-xPbI3-yBryThe perovskite layer of (a);
3. preparing a Spiro-OMeTAD hole transport layer by adopting a spin coating method, and evaporating MoO3Then, the top layer is prepared with an ITO based transparent cell and a metal grid line.
The antireflection film prepared by the embodiment is directly attached to the surface of the solar cell, so that the laminated solar cell can be obtained. Referring to FIG. 4, the string of perovskite crystalline silicon tandem solar cell device obtained an open circuit voltage of 1.73V, 16.5mA/cm, through IV performance testing20.81 fill factor and a photoelectric conversion efficiency of 23.1%. Referring to fig. 5, after an antireflective layer is provided in a perovskite and silicon solar cell, the solar cellThe response of the film is increased at the response of ultraviolet 300-400nm and visible light and infrared 400-1100nm, which shows that the composite action of the down-conversion and the anti-reflection film is improved by 2.4mA/cm relative to the short-circuit current of the device without the anti-reflection film2The short circuit power is also increased by 0.3mA/cm relative to a tandem solar cell with only the antireflective film and no down-conversion material2. Therefore, the antireflection film can effectively improve the light trapping capacity and the ultraviolet response capacity of the perovskite silicon tandem solar cell, and improves the commercial application prospect of the cell.
In another alternative embodiment, the bottom cell layer also adopts n-silicon based on PERC structure as the bottom cell, and the top cell layer adopts MAPbI based3The transparent perovskite battery has a tunneling layer made of ultrathin silicon dioxide and a spectrum down-conversion material selected from Eu-doped materials2+The light trapping suede is a light trapping suede with rose petals, and a substrate material adopts Polydimethylsiloxane (PDMS).
Specifically, the manufacturing steps of the spectral down-conversion antireflection film in this embodiment include:
first, Polydimethylsiloxane (PDMS) and a curing agent were liquid-mixed at a mass ratio of 10:1 as a matrix material and weighed,
second, doping Eu2+The barium strontium silicate down-conversion material is mixed with weighed PDMS mixed liquid and is uniformly mixed and stirred, and the optimal mixing mass fraction is 0.3-1.0%;
thirdly, mixing Eu2+The PDMS liquid of the barium strontium silicate down-conversion material is poured into a grinding tool attached with rose petals to carry out suede mirror image copying, and the poured liquid amount is accurately controlled to control the thickness of the anti-reflection film, wherein the preferable thickness is 1-2 mm.
Fourthly, standing the PMDS solution in a grinding tool with rose petals for about 24-48h for solidification, and then taking down the solidified antireflection film to obtain the spectrum down-conversion antireflection film with the bionic suede.
In the embodiment, the bottom cell layer adopts an n-type silicon solar cell based on a PERC structure, the front surface of the cell is polished and is provided with a pn junction with p + positioned at the top, and the junction depth is 3 mu m; and (3) growing silicon dioxide with the thickness of about 1.5nm on the front surface of the silicon wafer to be used as a tunneling layer, and preparing a transparent perovskite battery to be used as a laminated top battery.
Specifically, the top cell approach is as follows:
SnO2 obtaining a middle tunneling layer;
2. preparation of MAPbI by one-step method3The perovskite layer of (a);
3. preparing a Spiro-OMeTAD hole transport layer by adopting a spin coating method, and evaporating MoO3Then, the top layer is prepared with an ITO based transparent cell and a metal grid line.
And finally, directly pasting the prepared anti-reflection film with the down-conversion function on the surface of the solar cell to obtain the final laminated cell. Through IV performance test, the string of perovskite crystalline silicon tandem solar cell device obtains an open-circuit voltage of 1.70V and an open-circuit voltage of 16.4mA/cm20.78, and a photoelectric conversion efficiency of 21.7%. The data can show that the antireflection film can effectively improve the light trapping capacity and the ultraviolet response capacity of the perovskite silicon tandem solar cell, and the commercial application prospect of the perovskite silicon tandem solar cell is improved.
The above description is only for the specific embodiments of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art can easily think of various equivalent modifications or replacements within the technical scope of the present invention, and these modifications or replacements should be covered within the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.

Claims (4)

1. A spectrally down-converting antireflective film for a solar cell, comprising:
a matrix material layer which is a transparent matrix material;
the light trapping velvet surface layer is arranged at the upper end of the matrix material layer;
a spectrum down conversion material uniformly distributed within the spectrum down conversion antireflection film;
wherein, the thickness of the light trapping velvet surface layer is in the range of 0.01-20 mm.
2. The spectral down-conversion antireflection film of claim 1 wherein the shape of the light trapping texture comprises at least one of a regular pyramid shape, an inverted pyramid shape, a random trap shape, a petal surface shape, and a leaf surface shape.
3. The spectral down-conversion antireflection film of claim 2 wherein the spectral down-conversion material is a solid or a liquid; and/or the presence of a gas in the gas,
the absorption wavelength of the spectrum down-conversion material is within 200-500nm, and the emission wavelength of the spectrum down-conversion material is within 400-1200 nm;
when the spectral down-conversion material is a solid, the particle size of the solid is in the range of 1nm to 1 mm.
4. A tandem solar cell, comprising:
the bottom battery layer is a homojunction silicon solar battery based on Al-BSF or PERC;
the top battery layer is a top battery which adopts a transparent perovskite battery as a lamination layer;
a tunneling layer connecting the bottom cell layer and the top cell layer;
the spectrally downconversion antireflective film of any one of claims 1 to 3 provided on an upper portion of the top cell.
CN201921130031.3U 2019-07-18 2019-07-18 Spectrum down-conversion antireflection film and laminated solar cell Active CN210607278U (en)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110246908A (en) * 2019-07-18 2019-09-17 深圳黑晶光电科技有限公司 Antireflective film, production method and lamination solar cell are converted under a kind of spectrum

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110246908A (en) * 2019-07-18 2019-09-17 深圳黑晶光电科技有限公司 Antireflective film, production method and lamination solar cell are converted under a kind of spectrum

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