CN117279460A - Preparation method and packaging method of perovskite solar cell packaging material with light conversion and anti-reflection effects - Google Patents
Preparation method and packaging method of perovskite solar cell packaging material with light conversion and anti-reflection effects Download PDFInfo
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- CN117279460A CN117279460A CN202311184301.XA CN202311184301A CN117279460A CN 117279460 A CN117279460 A CN 117279460A CN 202311184301 A CN202311184301 A CN 202311184301A CN 117279460 A CN117279460 A CN 117279460A
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- 239000005022 packaging material Substances 0.000 title claims abstract description 35
- 238000006243 chemical reaction Methods 0.000 title claims abstract description 27
- 238000000034 method Methods 0.000 title claims abstract description 22
- 230000000694 effects Effects 0.000 title claims abstract description 20
- 238000002360 preparation method Methods 0.000 title claims abstract description 13
- 238000004806 packaging method and process Methods 0.000 title claims abstract description 12
- 239000000463 material Substances 0.000 claims abstract description 34
- 238000005538 encapsulation Methods 0.000 claims abstract description 20
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 claims abstract description 14
- 229910052710 silicon Inorganic materials 0.000 claims abstract description 14
- 239000010703 silicon Substances 0.000 claims abstract description 14
- 239000000243 solution Substances 0.000 claims abstract description 14
- 239000004205 dimethyl polysiloxane Substances 0.000 claims abstract description 12
- 229920000435 poly(dimethylsiloxane) Polymers 0.000 claims abstract description 12
- 239000002313 adhesive film Substances 0.000 claims abstract description 11
- -1 polydimethylsiloxane Polymers 0.000 claims abstract description 9
- 239000011259 mixed solution Substances 0.000 claims abstract description 5
- 238000003756 stirring Methods 0.000 claims abstract description 5
- 238000010030 laminating Methods 0.000 claims description 20
- 229920002397 thermoplastic olefin Polymers 0.000 claims description 9
- 238000002834 transmittance Methods 0.000 claims description 3
- 229920005610 lignin Polymers 0.000 claims description 2
- 238000004519 manufacturing process Methods 0.000 claims description 2
- 150000001875 compounds Chemical class 0.000 claims 2
- 239000002105 nanoparticle Substances 0.000 claims 1
- 239000002061 nanopillar Substances 0.000 claims 1
- 230000031700 light absorption Effects 0.000 abstract description 12
- 238000012858 packaging process Methods 0.000 abstract description 4
- 230000000052 comparative effect Effects 0.000 description 6
- 238000010586 diagram Methods 0.000 description 6
- 239000000758 substrate Substances 0.000 description 5
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 4
- 239000008393 encapsulating agent Substances 0.000 description 4
- 239000001301 oxygen Substances 0.000 description 4
- 229910052760 oxygen Inorganic materials 0.000 description 4
- 238000003475 lamination Methods 0.000 description 3
- 238000002156 mixing Methods 0.000 description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 3
- 230000003628 erosive effect Effects 0.000 description 2
- 239000011888 foil Substances 0.000 description 2
- 239000011521 glass Substances 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 229910001220 stainless steel Inorganic materials 0.000 description 2
- 239000010935 stainless steel Substances 0.000 description 2
- 238000002835 absorbance Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000004364 calculation method Methods 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 230000001066 destructive effect Effects 0.000 description 1
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 description 1
- 239000010931 gold Substances 0.000 description 1
- 229910052737 gold Inorganic materials 0.000 description 1
- 239000004005 microsphere Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000003287 optical effect Effects 0.000 description 1
- 238000012536 packaging technology Methods 0.000 description 1
- 230000010363 phase shift Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Classifications
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- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
- H10K71/00—Manufacture or treatment specially adapted for the organic devices covered by this subclass
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- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
- H10K30/00—Organic devices sensitive to infrared radiation, light, electromagnetic radiation of shorter wavelength or corpuscular radiation
- H10K30/40—Organic devices sensitive to infrared radiation, light, electromagnetic radiation of shorter wavelength or corpuscular radiation comprising a p-i-n structure, e.g. having a perovskite absorber between p-type and n-type charge transport layers
-
- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
- H10K30/00—Organic devices sensitive to infrared radiation, light, electromagnetic radiation of shorter wavelength or corpuscular radiation
- H10K30/50—Photovoltaic [PV] devices
-
- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
- H10K30/00—Organic devices sensitive to infrared radiation, light, electromagnetic radiation of shorter wavelength or corpuscular radiation
- H10K30/80—Constructional details
- H10K30/87—Light-trapping means
-
- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
- H10K30/00—Organic devices sensitive to infrared radiation, light, electromagnetic radiation of shorter wavelength or corpuscular radiation
- H10K30/80—Constructional details
- H10K30/88—Passivation; Containers; Encapsulations
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- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Chemical & Material Sciences (AREA)
- Materials Engineering (AREA)
- Photovoltaic Devices (AREA)
Abstract
The invention belongs to the technical field of encapsulation of perovskite solar cells, and particularly relates to a preparation method and an encapsulation method of a perovskite solar cell encapsulation material with light conversion and anti-reflection effects. The preparation method of the packaging material comprises the following steps: (1) Adding a fluorescent material into the polydimethylsiloxane solution, and magnetically stirring overnight; (2) Selecting a silicon wafer with a light trapping structure as a template according to the required size of the battery; (3) And (3) uniformly smearing the mixed solution obtained in the step (1) on a silicon wafer template, curing, and taking down the template to obtain the packaging material. The invention utilizes the light trapping structure of the packaging adhesive film and the light conversion effect of the fluorescent material in the packaging process of the perovskite solar cell, improves the light absorption and utilization rate, and the packaged cell has the advantages of high photoelectric conversion efficiency, simple operation method and the like, and is suitable for packaging various perovskite solar cells.
Description
Technical Field
The invention belongs to the technical field of encapsulation of perovskite solar cells, and particularly relates to a preparation method and an encapsulation method of a perovskite solar cell encapsulation material with light conversion and anti-reflection effects.
Background
The perovskite solar cell is a novel cell, has the characteristics of high efficiency, low cost, easiness in preparation and the like, adopts a perovskite material as a photoelectric conversion layer, and can absorb solar energy more efficiently and effectively improve photoelectric conversion efficiency compared with the traditional silicon-based solar cell.
Perovskite solar cells are susceptible to extreme conditions such as high temperature, high humidity, oxygen and external force impact in the working environment, so that devices are damaged, performance is reduced and even failure is caused, and the perovskite solar cell packaging technology plays a key role in protecting device stability and improving photoelectric conversion efficiency. At present, EVA and POE adhesive films are often used as packaging materials, and although the materials can effectively isolate water and oxygen from corroding a perovskite solar cell, the packaging materials do not help to increase the light absorption capacity of the cell, so that the light absorption utilization rate of the cell can be greatly improved, and the photoelectric conversion efficiency of the perovskite solar cell is further improved.
Disclosure of Invention
The invention aims to provide a preparation method and a packaging method of a perovskite solar cell packaging material with light conversion and anti-reflection effects. The invention utilizes the light trapping structure of the packaging adhesive film and the light conversion effect of the fluorescent material in the packaging process of the perovskite solar cell, improves the light absorption and utilization rate, and realizes the anti-reflection effect according to the interference principle through the modulation of the thickness of the film layer and the refractive index. The battery packaged by the method has the advantages of high photoelectric conversion efficiency, simple operation method and the like, and is suitable for packaging various perovskite solar cells. In order to achieve the above object, the technical scheme of the present invention is as follows:
in one aspect, the invention provides a method for preparing a perovskite solar cell packaging material with light conversion and anti-reflection effects, which comprises the following steps: (1) Adding fluorescent materials (Lumogen F (BASF) Violet570 dye (V570)) into Polydimethylsiloxane (PDMS) solution, magnetically stirring overnight, and uniformly mixing;
(2) Selecting a silicon wafer with a light trapping structure as a template according to the required size of the battery;
(3) And (3) uniformly smearing the mixed solution obtained in the step (1) on a silicon wafer template, curing, and taking down the template to obtain the packaging material.
In the above technical scheme, further, the weight ratio of the polydimethylsiloxane to the fluorescent material is 10: (0.5-5), preferably 10:1.
in the above technical solution, further, the fluorescent material includes any one of lignin, lumogen F Violet570, a benzobis-thiazolyl compound, and a benzobis-imidazolyl compound. The packaging material added with the fluorescent material can absorb light rays with ultraviolet wavelength without affecting the overall light transmittance, and effectively improves the light absorption and utilization rate.
In the above technical scheme, further, the curing temperature is 100-120 ℃ and the curing time is 15-30min, so as to reduce the generation of bubbles.
In the above technical solution, further, the packaging material includes an inverted pyramid light trapping structure, a nano column light trapping structure, or a nano microsphere light trapping structure, preferably an inverted gold light trapping structure.
In the above technical solution, further, the thickness of the encapsulation material is 0.5mm.
The invention also provides a method for packaging the perovskite solar cell by using the packaging material prepared by the preparation method, wherein the packaging material and TCO on the light incident surface of the perovskite solar cell are bonded together, and are pressed together by a laminating machine, wherein the laminating temperature is 150 ℃, and the laminating time is 5min; the back of the battery is formed by laminating thermoplastic polyolefin adhesive films.
In the technical scheme, the thickness of the thermoplastic polyolefin adhesive film is 50-250 mu m, the refractive index is 1.5-2.5, and the transmittance is more than or equal to 85%.
Principle of antireflection, refractive index calculation: the relative phase shift is shifted between 180 degrees of beam reflection at the upper and lower boundaries of the film. Destructive interference occurs between the two reflected beams and is cancelled simultaneously before they exit the surface. The optical thickness of the coating must be an odd number of quarter wavelengths (1/4 where L is the design wavelength or the optimum wavelength for peak performance) to achieve the path difference required for one half wavelength between the reflected beams, resulting in its cancellation. The refractive index equation for determining that the two beams completely cancel the desired film is:
wherein: n is n f Is the refractive index of the film, n 0 Is the refractive index of air (or incident material), n s Refractive index of the substrate.
The light trapping structure is shown in figure 2 under the normal condition of solar cell light absorption; the light absorption of the solar cell after the cell is encapsulated using the light trapping structure is shown in fig. 3.
Compared with the prior art, the invention has the following beneficial effects:
(1) The preparation method of the packaging material has the advantages of good repeatability, simple preparation process, simple required materials, capability of increasing the light absorption efficiency of the battery, and the like, reduces the process steps and avoids the damage to devices by the process.
(2) The invention utilizes the light trapping structure of the packaging material and the light conversion effect of the fluorescent material in the packaging process of the perovskite solar cell, improves the light absorption and utilization ratio, enhances the light reflection reduction effect of the packaging material while meeting the packaging requirement, further improves the service life of the perovskite solar cell and increases the photoelectric conversion efficiency of the perovskite solar cell.
(3) The invention solves the problem of low-temperature encapsulation, and simultaneously increases the light conversion effect, improves the stability of the battery, improves the efficiency of the battery, simplifies the process flow and reduces the production cost by utilizing the light trapping structure of the encapsulation material while meeting the encapsulation requirement.
(4) The packaging material prepared by the invention has a light trapping structure, the light trapping structure not only has stability and controllability, but also can effectively reduce the reflection of light on the surface of the battery, improve the internal light absorption to enable sunlight to be utilized and converted into electric energy to the greatest extent, effectively increase the surface area of the battery and increase the light absorption and utilization efficiency, and the thickness of the thermoplastic polyolefin adhesive film is adjusted in the packaging process, so that the anti-reflection effect is further realized according to the interference principle through the modulation of the thickness of the film layer and the refractive index.
(5) According to the invention, the fluorescent material is added into the packaging material, so that ultraviolet light can be converted into low-energy visible light, the stability of the perovskite battery can be improved, and meanwhile, the photoelectric conversion efficiency is effectively improved with the additional advantage of an ultraviolet light region.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings that are required in the embodiments or the description of the prior art will be briefly described, and it is obvious that the drawings in the following description are some embodiments of the present invention, and other drawings may be obtained according to the drawings without inventive effort to a person skilled in the art. FIG. 1 is a schematic diagram of a refractive index equation;
FIG. 2 is a graph showing the absorption of light of a solar cell after encapsulation using a conventional encapsulant;
FIG. 3 is a graph showing the absorbance of a solar cell after encapsulation using the encapsulant of the present invention;
fig. 4 is a schematic diagram of a light trapping structure of the packaging material and a schematic diagram of a perovskite solar cell after packaging, a is a schematic diagram of a light trapping structure, and b is a schematic diagram after packaging;
in the figure: 1. a silicon wafer with a pyramid structure, 2, an encapsulating material, 3 and a perovskite solar cell;
fig. 5 is a schematic diagram of an inverted pyramid light trapping structure according to the present invention.
Detailed Description
The following examples will enable those of ordinary skill in the art to more fully understand the invention and are not intended to limit the invention in any way.
Comparative example 1
The rigid perovskite solar cell of 200mm by 200mm FTO glass substrate was encapsulated by lamination using conventional encapsulation materials.
Comparative example 2
Flexible perovskite solar cells of 156mm by 200mm stainless steel foil substrate were encapsulated by lamination using conventional encapsulation materials.
Example 1
(1) Adding fluorescent materials (Lumogen F (BASF) Violet570 dye (V570)) into a Polydimethylsiloxane (PDMS) solution, mixing the polydimethylsiloxane and the fluorescent materials in a weight ratio of 10:1 in the preparation process, and magnetically stirring the prepared solution overnight to uniformly mix the solution;
(2) Preparing a silicon wafer template according to the required size of the battery, and observing the silicon wafer template under a microscope to obtain a pyramid structure;
(3) Smearing the mixed solution obtained in the step (1) on a silicon wafer template, and then curing for 15min at 100 ℃;
(4) Taking down the cured packaging material from the template, wherein the thickness of the packaging material is about 0.5mm, and the generation of bubbles is reduced as much as possible, so that the packaging material has an inverted pyramid light trapping structure;
(5) Attaching the packaging material obtained in the step (4) on a rigid perovskite solar cell with a FTO glass substrate of 200mm by 200mm in size, and leading out a positive electrode and a negative electrode before lamination;
(6) Laminating the battery and the packaging material together by using a laminating machine at the laminating temperature of 150 ℃ for 5min, wherein the back of the battery is formed by laminating thermoplastic polyolefin adhesive films without a light trapping structure, and the front and back of the battery are formed by integrally laminating the battery with the thermoplastic polyolefin adhesive films in the middle to form a seal so as to prevent water and oxygen erosion;
(7) And laminating to obtain the perovskite solar cell with the packaging material with the light conversion and anti-reflection effects.
The perovskite solar cell of example 1 and the perovskite solar cell of comparative example 1 having the encapsulant material of light conversion and anti-reflection effect have the performance parameters as shown in table 1 below:
TABLE 1
Device type | Voc | Jsc(mA/cm 2 ) | FF | PCE |
Comparative example 1 | 0.96 | 22.3 | 80 | 18.72 |
Example 1 | 1.02 | 24.6 | 82 | 20.5 |
As can be seen from the above table, the perovskite solar cell prepared by using the encapsulation material having the light conversion and anti-reflection effects in the encapsulation process has higher photoelectric conversion efficiency.
Example 2
(1) Adding fluorescent materials (Lumogen F (BASF) Violet570 dye (V570)) into a Polydimethylsiloxane (PDMS) solution, mixing the polydimethylsiloxane and the fluorescent materials in a weight ratio of 10:1 in the preparation process, and magnetically stirring the prepared solution overnight to uniformly mix the solution;
(2) Preparing a silicon wafer template according to the required size of the battery, and observing the silicon wafer template under a microscope to obtain a pyramid structure;
(3) Uniformly smearing the mixed solution obtained in the step (1) on a silicon wafer and then curing for 15min at 100 ℃;
(4) Taking down the cured packaging material from the template, wherein the thickness of the packaging material is about 0.5mm, and the generation of bubbles is reduced as much as possible, so that the packaging material has an inverted pyramid light trapping structure;
(5) Attaching the prepared packaging material on a flexible perovskite solar cell with a size of 156mm by 200mm and a stainless steel foil substrate to prepare a leading-out positive electrode and a leading-out negative electrode;
(6) Laminating the battery and the packaging material together by using a laminating machine at the laminating temperature of 150 ℃ for 5min, wherein the back of the battery is formed by laminating thermoplastic polyolefin adhesive films without a light trapping structure, and the front and back of the battery are formed by integrally laminating the battery with the thermoplastic polyolefin adhesive films in the middle to form a seal so as to prevent water and oxygen erosion;
(7) And laminating to obtain the perovskite solar cell with the packaging material with the light conversion and anti-reflection effects.
Example 2 perovskite solar cell of the encapsulant material having light conversion and anti-reflection effects the perovskite solar cell performance parameters of comparative example 2 are shown in table 2 below:
TABLE 2
Device type | Voc | Jsc(mA/cm 2 ) | FF | PCE |
Comparative example 2 | 1.05 | 16.41 | 75.25 | 18.3 |
Example 2 | 1.07 | 18.25 | 77.00 | 19.8 |
As can be seen from the above table, the perovskite solar cell prepared by using the encapsulation material having the light conversion and anti-reflection effects in the encapsulation process has higher photoelectric conversion efficiency.
Finally, it should be noted that: the above embodiments are only for illustrating the technical solution of the present invention, and not for limiting the same; although the invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical scheme described in the foregoing embodiments can be modified or some or all of the technical features thereof can be replaced by equivalents; such modifications and substitutions do not depart from the spirit of the invention.
Claims (8)
1. A method for preparing a perovskite solar cell packaging material with light conversion and anti-reflection effects, which is characterized by comprising the following steps:
(1) Adding a fluorescent material into the polydimethylsiloxane solution, and magnetically stirring overnight;
(2) Selecting a silicon wafer with a light trapping structure as a template according to the required size of the battery;
(3) And (3) uniformly smearing the mixed solution obtained in the step (1) on a silicon wafer template, curing, and taking down the template to obtain the packaging material.
2. The method of claim 1, wherein the weight ratio of polydimethylsiloxane to fluorescent material is 10: (0.5-5).
3. The method according to claim 1, wherein the fluorescent material comprises any one of lignin, lumogen F Violet570, benzobisthiazolyl compounds, benzobisimidazolyl compounds.
4. The method according to claim 1, wherein the curing temperature is 100-120 ℃ and the curing time is 15-30min.
5. The method of claim 1, wherein the encapsulation material comprises inverted pyramid light trapping structures, nanopillar light trapping structures, or nanoparticle light trapping structures.
6. The method of manufacturing according to claim 1, wherein the thickness of the encapsulation material is 0.5mm.
7. A method for packaging a perovskite solar cell by using the packaging material prepared by the preparation method according to any one of claims 1-6, which is characterized in that the packaging material and TCO on the light incident surface of the perovskite solar cell are attached together, and are pressed together by a laminating machine, wherein the laminating temperature is 150 ℃, and the laminating time is 5min; the back of the battery is formed by laminating thermoplastic polyolefin adhesive films.
8. The method of encapsulating a perovskite solar cell with an encapsulating material according to claim 7, wherein the thickness of the thermoplastic polyolefin film is 50-250 μm, the refractive index is 1.5-2.5, and the transmittance is not less than 85%.
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