CN106711263A - Solar cell module and manufacturing method thereof - Google Patents
Solar cell module and manufacturing method thereof Download PDFInfo
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- 238000004519 manufacturing process Methods 0.000 title claims description 8
- 229910052751 metal Inorganic materials 0.000 claims abstract description 22
- 239000002184 metal Substances 0.000 claims abstract description 22
- 239000000853 adhesive Substances 0.000 claims abstract description 16
- 230000001070 adhesive effect Effects 0.000 claims abstract description 16
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims abstract description 10
- 229910052802 copper Inorganic materials 0.000 claims abstract description 10
- 239000010949 copper Substances 0.000 claims abstract description 10
- 238000007731 hot pressing Methods 0.000 claims abstract description 10
- 239000005341 toughened glass Substances 0.000 claims abstract description 8
- 229910021419 crystalline silicon Inorganic materials 0.000 claims abstract description 6
- 238000009792 diffusion process Methods 0.000 claims abstract description 5
- 239000010410 layer Substances 0.000 claims description 43
- 239000000463 material Substances 0.000 claims description 12
- 239000012790 adhesive layer Substances 0.000 claims description 9
- 238000000034 method Methods 0.000 claims description 9
- XLOMVQKBTHCTTD-UHFFFAOYSA-N Zinc monoxide Chemical compound [Zn]=O XLOMVQKBTHCTTD-UHFFFAOYSA-N 0.000 claims description 8
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 claims description 6
- 239000002245 particle Substances 0.000 claims description 6
- 229910000838 Al alloy Inorganic materials 0.000 claims description 4
- 238000003475 lamination Methods 0.000 claims description 4
- 239000011787 zinc oxide Substances 0.000 claims description 4
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 3
- BQCADISMDOOEFD-UHFFFAOYSA-N Silver Chemical compound [Ag] BQCADISMDOOEFD-UHFFFAOYSA-N 0.000 claims description 3
- 229910052782 aluminium Inorganic materials 0.000 claims description 3
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims description 3
- 238000009434 installation Methods 0.000 claims description 3
- 239000002346 layers by function Substances 0.000 claims description 3
- 229910052759 nickel Inorganic materials 0.000 claims description 3
- 239000000741 silica gel Substances 0.000 claims description 3
- 229910002027 silica gel Inorganic materials 0.000 claims description 3
- 229910052709 silver Inorganic materials 0.000 claims description 3
- 239000004332 silver Substances 0.000 claims description 3
- -1 solar cell Substances 0.000 claims description 3
- 239000000758 substrate Substances 0.000 claims description 3
- 238000005538 encapsulation Methods 0.000 claims 1
- ATJFFYVFTNAWJD-UHFFFAOYSA-N Tin Chemical compound [Sn] ATJFFYVFTNAWJD-UHFFFAOYSA-N 0.000 abstract description 4
- 238000005452 bending Methods 0.000 abstract description 4
- 210000004027 cell Anatomy 0.000 description 33
- 238000003466 welding Methods 0.000 description 11
- 238000010248 power generation Methods 0.000 description 5
- 230000008569 process Effects 0.000 description 5
- 239000010408 film Substances 0.000 description 4
- 210000003850 cellular structure Anatomy 0.000 description 3
- 238000013467 fragmentation Methods 0.000 description 3
- 238000006062 fragmentation reaction Methods 0.000 description 3
- 230000006872 improvement Effects 0.000 description 3
- 239000012634 fragment Substances 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 229910021421 monocrystalline silicon Inorganic materials 0.000 description 2
- 238000004806 packaging method and process Methods 0.000 description 2
- 229910021420 polycrystalline silicon Inorganic materials 0.000 description 2
- 239000010409 thin film Substances 0.000 description 2
- CBENFWSGALASAD-UHFFFAOYSA-N Ozone Chemical compound [O-][O+]=O CBENFWSGALASAD-UHFFFAOYSA-N 0.000 description 1
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 description 1
- 229910001128 Sn alloy Inorganic materials 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 238000005468 ion implantation Methods 0.000 description 1
- 150000002500 ions Chemical class 0.000 description 1
- XEEYBQQBJWHFJM-UHFFFAOYSA-N iron Substances [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 230000004298 light response Effects 0.000 description 1
- 238000002844 melting Methods 0.000 description 1
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- 230000007903 penetration ability Effects 0.000 description 1
- 229910052698 phosphorus Inorganic materials 0.000 description 1
- 239000011574 phosphorus Substances 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 239000002096 quantum dot Substances 0.000 description 1
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- 239000002210 silicon-based material Substances 0.000 description 1
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- 238000002834 transmittance Methods 0.000 description 1
- 238000009281 ultraviolet germicidal irradiation Methods 0.000 description 1
Classifications
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- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10F—INORGANIC SEMICONDUCTOR DEVICES SENSITIVE TO INFRARED RADIATION, LIGHT, ELECTROMAGNETIC RADIATION OF SHORTER WAVELENGTH OR CORPUSCULAR RADIATION
- H10F19/00—Integrated devices, or assemblies of multiple devices, comprising at least one photovoltaic cell covered by group H10F10/00, e.g. photovoltaic modules
- H10F19/90—Structures for connecting between photovoltaic cells, e.g. interconnections or insulating spacers
- H10F19/902—Structures for connecting between photovoltaic cells, e.g. interconnections or insulating spacers for series or parallel connection of photovoltaic cells
- H10F19/906—Structures for connecting between photovoltaic cells, e.g. interconnections or insulating spacers for series or parallel connection of photovoltaic cells characterised by the materials of the structures
-
- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10F—INORGANIC SEMICONDUCTOR DEVICES SENSITIVE TO INFRARED RADIATION, LIGHT, ELECTROMAGNETIC RADIATION OF SHORTER WAVELENGTH OR CORPUSCULAR RADIATION
- H10F71/00—Manufacture or treatment of devices covered by this subclass
- H10F71/137—Batch treatment of the devices
- H10F71/1375—Apparatus for automatic interconnection of photovoltaic cells in a module
-
- 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
-
- 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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- Photovoltaic Devices (AREA)
Abstract
本发明公布了一种太阳能电池组件，包括从上到下依次排布的钢化玻璃、EVA层以及背板，所述EVA层中封装布设若干个太阳能电池片，相邻的太阳能电池片之间连接有导电胶条，导电胶条的两端分别连接在相邻两个太阳能电池片的正面和背面，所述太阳能电池包括依次层叠的金属背电极、P型晶体硅、N型扩散层、功能化层、金属栅电极。所述的导电胶条通过热压的方式与电池片正面的主栅线及背电极在较低的温度下结合在一起。本发明的太阳能电池组件用导电胶带取代常规的涂锡铜带，降低了电池片焊接时的温度，同时导电胶带良好的柔韧性也大大减少了电池片的弯曲现象，降低了隐裂及碎片产生的可能性，提高了组件的稳定性及可靠性。
The invention discloses a solar cell module, which includes tempered glass, EVA layer and back plate arranged in sequence from top to bottom, several solar cell sheets are packaged and arranged in the EVA layer, and adjacent solar cell sheets are connected to each other. There are conductive adhesive strips, and the two ends of the conductive adhesive strips are respectively connected to the front and back of two adjacent solar cells. The solar cells include sequentially stacked metal back electrodes, P-type crystalline silicon, N-type diffusion layers, functionalized layer, metal gate electrode. The conductive adhesive strip is combined with the main grid line and the back electrode on the front side of the battery sheet at a relatively low temperature by hot pressing. In the solar cell module of the present invention, the conventional tin-coated copper tape is replaced by conductive tape, which reduces the temperature when the battery sheet is welded, and at the same time, the good flexibility of the conductive tape also greatly reduces the bending phenomenon of the battery sheet, and reduces the occurrence of hidden cracks and debris The possibility of improving the stability and reliability of components.
Description
技术领域technical field
本发明涉及太阳能材料和器件领域，具体涉及一种太阳能电池组件及其制作方法。The invention relates to the field of solar materials and devices, in particular to a solar battery module and a manufacturing method thereof.
背景技术Background technique
近年来，太阳能作为一种清洁、绿色的可再生新能源受到了越来越多的关注，其应用也非常广泛。在太阳能的各种应用中，目前最重要的一个应用就是光伏发电，随着各国对太阳能发电的重视，光伏发电在整个发电系统中所占的比例越来越大。In recent years, solar energy, as a clean and green renewable energy source, has received more and more attention, and its application is also very extensive. Among the various applications of solar energy, the most important application at present is photovoltaic power generation. With the emphasis on solar power generation in various countries, the proportion of photovoltaic power generation in the entire power generation system is increasing.
太阳能光伏发电的最基本单元是太阳能电池，在具体的应用中，通常是将多个太阳能电池片进行封装构成太阳能电池组件，然后再将各个太阳能电池组件连接起来构成整体的电流输出。目前广泛使用的太阳能电池组件主要为单晶硅电池组件和多晶硅电池组件，其常规的工艺是：将单片太阳能电池片通过焊带(即涂锡铜带)在高温下焊接，然后进行叠层敷设，接着将敷设件放入层压机进行层压，最后对层压件安装铝合金边框即完成组件的封装。在组件的封装工艺中，太阳能电池片的焊接是非常重要的一个步骤，由于焊接材料是涂锡铜带，而锡料合金的熔点约在180℃～230℃之间，为了保证焊接的可靠性，此道工艺需在高温下完成。常规单晶硅或多晶硅电池片的焊接温度一般在320℃～380℃间，这样的温度会加大电池片的变形和弯曲，造 成电池片性能的衰减。此外，由于焊接材料跟电池片所用的硅材料热膨胀系数差异较大，导致焊接后的电池片内存在一定的残余应力，造成电池片的隐裂和碎片，这些因素都会影响最终封装的组件性能及可靠性。随着现在电池片的厚度越来越薄，在高温焊接的过程中电池片更加容易弯曲，导致更高的碎片率。The most basic unit of solar photovoltaic power generation is a solar cell. In a specific application, a plurality of solar cells are usually packaged to form a solar cell module, and then each solar cell module is connected to form an overall current output. Currently widely used solar cell components are mainly monocrystalline silicon cell components and polycrystalline silicon cell components. The conventional process is: a single solar cell is welded at a high temperature through a welding strip (that is, a tin-coated copper strip), and then laminated. Laying, then put the laying parts into the laminator for lamination, and finally install the aluminum alloy frame on the laminated parts to complete the packaging of the components. In the packaging process of components, the welding of solar cells is a very important step. Since the welding material is tin-coated copper strip, and the melting point of tin alloy is between 180°C and 230°C, in order to ensure the reliability of welding , this process needs to be completed at high temperature. The welding temperature of conventional monocrystalline silicon or polycrystalline silicon cells is generally between 320°C and 380°C. Such a temperature will increase the deformation and bending of the cell, resulting in attenuation of the performance of the cell. In addition, due to the large difference in thermal expansion coefficient between the welding material and the silicon material used in the battery, there is a certain residual stress in the battery after welding, resulting in cracks and fragments of the battery. These factors will affect the performance of the final packaged components and reliability. As the thickness of the battery sheet is getting thinner and thinner, the battery sheet is more likely to bend during the high-temperature welding process, resulting in a higher fragmentation rate.
发明内容Contents of the invention
本发明的目的之一旨在提供一种太阳能电池组件，能够实现在低温下对电池片的焊接，降低了焊接过程中电池片的弯曲现象，减少了隐裂及碎片的发生，提高了组件的稳定性及可靠性。One of the objectives of the present invention is to provide a solar cell module, which can realize the welding of the battery sheet at low temperature, reduce the bending phenomenon of the battery sheet during the welding process, reduce the occurrence of hidden cracks and fragments, and improve the reliability of the assembly. Stability and reliability.
为实现上述目的，本发明提出的一种太阳能电池组件，包括从上到下依次排布的钢化玻璃、EVA层以及背板，所述EVA层中封装布设若干个太阳能电池片，相邻的太阳能电池片之间连接有导电胶条，导电胶条的两端分别连接在相邻两个太阳能电池片的正面和背面，所述太阳能电池片包括依次层叠的金属背电极、P型晶体硅、N型扩散层、功能化层、金属栅电极，其中所述功能化层包括SnCH3NH2BrxClyI3-x-y钙钛矿光响应层和氧化锌导电薄膜层。In order to achieve the above object, a solar cell assembly proposed by the present invention includes tempered glass, EVA layer and back sheet arranged sequentially from top to bottom, several solar cells are packaged and arranged in the EVA layer, and adjacent solar cells Conductive adhesive strips are connected between the battery sheets, and the two ends of the conductive adhesive strips are respectively connected to the front and back of two adjacent solar cell sheets. The solar cell sheets include sequentially stacked metal back electrodes, P-type crystalline silicon, N Type diffusion layer, functional layer, metal gate electrode, wherein the functional layer includes SnCH 3 NH 2 Br x Cl y I 3-xy perovskite photoresponse layer and zinc oxide conductive thin film layer.
作为优选，所述导电胶条由金属层和两个粘合层组成，所述金属层位于两个粘合层之间。Preferably, the conductive adhesive strip is composed of a metal layer and two adhesive layers, and the metal layer is located between the two adhesive layers.
作为优选，所述金属层为高导电率的铜或铝基材。Preferably, the metal layer is a high-conductivity copper or aluminum substrate.
作为优选，所述金属层厚度优选为80～120微米。Preferably, the thickness of the metal layer is preferably 80-120 microns.
作为优选，所述粘合层含有导电粒子，所述导电粒子为铜、银或 镍中的一种。Preferably, the adhesive layer contains conductive particles, and the conductive particles are one of copper, silver or nickel.
作为优选，所述导电胶条厚度为100～280微米。Preferably, the thickness of the conductive adhesive strip is 100-280 microns.
本发明的另外一个目的在于提供上述太阳能电池组件的制作方法，包括以下制作步骤：Another object of the present invention is to provide a method for manufacturing the above-mentioned solar cell module, comprising the following manufacturing steps:
(1)太阳能电池片串接：将导电胶条通过热压的方式与电池片正面的主栅线及背电极结合在一起，热压温度为220℃，热压时间为5～15秒；(1) Solar cell series connection: combine the conductive adhesive strip with the busbar and the back electrode on the front of the cell by hot pressing, the hot pressing temperature is 220°C, and the hot pressing time is 5 to 15 seconds;
(2)敷设：将组件所需的材料按照一定的顺序层叠，敷设的顺序从下到上依次是：钢化玻璃、EVA层、太阳能电池片、EVA层、背板；(2) Laying: Lay up the materials required for the components in a certain order, and the laying order from bottom to top is: tempered glass, EVA layer, solar cell, EVA layer, back sheet;
(3)层压：将敷设好的组件放入层压机，在真空高温条件下组件各部分材料粘合在一起成为一个整体的层压件；(3) Lamination: Put the laid components into the laminator, and under the condition of vacuum and high temperature, the materials of all parts of the components are bonded together to form a whole laminate;
(4)装框：对层压件安装铝合金边框，层压件和边框接触的部分用硅胶密封，然后在组件背面安装接线盒。(4) Frame installation: install an aluminum alloy frame on the laminate, seal the contact part between the laminate and the frame with silica gel, and then install a junction box on the back of the component.
本发明的有益效果在于，用导电胶带取代现有技术的涂锡铜带，降低了电池片焊接时的温度，同时导电胶带良好的柔韧性也大大减少了电池片的弯曲现象，降低了隐裂及碎片产生的可能性，提高了组件的稳定性及可靠性。The beneficial effect of the present invention is that the tin-coated copper tape of the prior art is replaced by the conductive tape, which reduces the temperature when the battery sheet is welded, and at the same time, the good flexibility of the conductive tape also greatly reduces the bending phenomenon of the battery sheet and reduces the crack And the possibility of fragmentation, improve the stability and reliability of components.
附图说明Description of drawings
图1为本发明太阳能电池组件的结构示意图；Fig. 1 is the structural representation of solar cell module of the present invention;
图2为本发明导电胶条的剖面图；Fig. 2 is the sectional view of conductive rubber strip of the present invention;
图3为本发明太阳能电池片的结构示意图。Fig. 3 is a schematic structural diagram of a solar cell of the present invention.
具体实施方式detailed description
下面，将结合附图来对本发明的示例实施例进行详细描述。在附图中，相同或相似的参考标号自始至终表示相同或相似的元件。Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings. In the drawings, the same or similar reference numerals denote the same or similar elements throughout.
如图1和3所示，一种太阳能电池组件，包括从上到下依次排布的钢化玻璃1、EVA层2以及背板5，所述EVA层2中封装布设若干个太阳能电池片4，相邻的太阳能电池片4之间连接有导电胶条3，导电胶条3的两端分别连接在相邻两个太阳能电池片4的正面和背面，所述太阳能电池片4包括依次层叠的金属背电极41、P型晶体硅42、N型扩散层43、功能化层44、金属栅电极45，其中所述功能化层44包括SnCH3NH2BrxClyI3-x-y钙钛矿光响应层和氧化锌导电薄膜层。其中超白低铁钢化玻璃具有高透光率并起到保护太阳能电池片的作用，EVA材料具有密封和粘结的作用，背板作为背面的保护封装材料，具有耐老化、耐腐蚀、阻止水汽渗透的能力及良好的绝缘性能。As shown in Figures 1 and 3, a solar cell assembly includes tempered glass 1, an EVA layer 2 and a back sheet 5 arranged sequentially from top to bottom, and several solar cells 4 are packaged and arranged in the EVA layer 2, A conductive adhesive strip 3 is connected between adjacent solar cells 4, and the two ends of the conductive adhesive strip 3 are respectively connected to the front and back of two adjacent solar cells 4, and the solar cells 4 include sequentially stacked metal Back electrode 41, P-type crystalline silicon 42, N-type diffusion layer 43, functionalized layer 44, metal gate electrode 45, wherein the functionalized layer 44 includes SnCH 3 NH 2 Br x Cl y I 3-xy perovskite light Response layer and zinc oxide conductive thin film layer. Among them, ultra-white low-iron tempered glass has high light transmittance and plays the role of protecting solar cells. EVA material has the function of sealing and bonding. Penetration ability and good insulation performance.
如图2所示，所述导电胶条3由金属层31和两个粘合层32组成，所述金属层31位于两个粘合层32之间。所述导电胶条3厚度优选为100～280微米。所述金属层31优选为具有高导电率的铜或铝基材，金属层31厚度为80～120微米。所述粘合层32含有导电粒子，所述导电粒子为铜、银或镍中的一种。As shown in FIG. 2 , the conductive adhesive strip 3 is composed of a metal layer 31 and two adhesive layers 32 , and the metal layer 31 is located between the two adhesive layers 32 . The thickness of the conductive adhesive strip 3 is preferably 100-280 microns. The metal layer 31 is preferably a copper or aluminum substrate with high electrical conductivity, and the thickness of the metal layer 31 is 80-120 microns. The adhesive layer 32 contains conductive particles, and the conductive particles are one of copper, silver or nickel.
上述的太阳能电池组件的制作方法，其特征在于，包括以下制作步骤：The manufacturing method of the above-mentioned solar cell module is characterized in that it comprises the following manufacturing steps:
(1)太阳能电池片串接：将导电胶条通过热压的方式与电池片正面 的主栅线及背电极结合在一起，热压温度为220℃，热压时间为5～15秒；(1) Solar cell serial connection: Combine the conductive adhesive strip with the busbar and back electrode on the front of the cell by hot pressing. The hot pressing temperature is 220°C, and the hot pressing time is 5 to 15 seconds;
(2)敷设：将组件所需的材料按照一定的顺序层叠，敷设的顺序从下到上依次是：钢化玻璃、EVA层、太阳能电池片、EVA层、背板；(2) Laying: Lay up the materials required for the components in a certain order, and the laying order from bottom to top is: tempered glass, EVA layer, solar cell, EVA layer, back sheet;
(3)层压：将敷设好的组件放入层压机，在真空高温条件下组件各部分材料粘合在一起成为一个整体的层压件；(3) Lamination: Put the laid components into the laminator, and under the condition of vacuum and high temperature, the materials of all parts of the components are bonded together to form a whole laminate;
(4)装框：对层压件安装铝合金边框，层压件和边框接触的部分用硅胶密封，然后在组件背面安装接线盒。(4) Frame installation: install an aluminum alloy frame on the laminate, seal the contact part between the laminate and the frame with silica gel, and then install a junction box on the back of the component.
所述太阳能电池片的制备的方法，包括以下步骤：The preparation method of described solar battery sheet, comprises the following steps:
(1)通过离子注入的方式在P型晶体硅42上制备N型扩散层4343，形成PN结。注入离子为磷。(1) An N-type diffusion layer 4343 is prepared on the P-type crystalline silicon 42 by means of ion implantation to form a PN junction. The implanted ion is phosphorus.
(2)对太阳能电池表面进行紫外线照射以及臭氧处理，改变其表面能；(2) UV irradiation and ozone treatment are carried out on the surface of the solar cell to change its surface energy;
(3)通过溶液旋涂的方法，在太阳能电池表面制备具有光致极化效应的功能化层44，所述功能薄膜包括光响应层和导电薄膜层，光响应层的材料为SnCH3NH2BrxClyI3-x-y钙钛矿量子点，导电薄膜层的材料为氧化锌；(3) Prepare a functionalized layer 44 with a photopolarization effect on the surface of the solar cell by solution spin coating, the functional film includes a photoresponsive layer and a conductive film layer, and the material of the photoresponsive layer is SnCH 3 NH 2 Br x Cl y I 3-xy perovskite quantum dots, the material of the conductive film layer is zinc oxide;
(4)在P型晶体硅42的背面形成金属背电极41，在导电薄膜层表面形成金属栅电极45。(4) Form a metal back electrode 41 on the back of the P-type crystalline silicon 42, and form a metal gate electrode 45 on the surface of the conductive film layer.
本发明工艺简单，实现了导电胶带在组件封装中的应用，此改进既保证了电池片电连接的可靠性，同时避免了传统电池片焊接方式出现的隐裂及碎片率很高的问题，降低了成本，并进一步提高了组件的 稳定性及可靠性。The invention has a simple process and realizes the application of conductive tape in component packaging. This improvement not only ensures the reliability of the electrical connection of the battery sheet, but also avoids the problems of hidden cracks and high fragmentation rate in the traditional battery sheet welding method, and reduces the The cost is reduced, and the stability and reliability of the components are further improved.
以上所述是本发明的优选实施方式，应当指出，对于本技术领域的普通技术人员来说，在不脱离本发明原理的前提下，还可以做出若干改进和润饰，这些改进和润饰也视为本发明的保护范围。The above description is a preferred embodiment of the present invention, and it should be pointed out that for those skilled in the art, without departing from the principle of the present invention, some improvements and modifications can also be made, and these improvements and modifications are also considered Be the protection scope of the present invention.
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