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Spraying system for preparing ultra-efficient solar cell electrode, and application of spraying system

A solar cell, ultra-efficient technology, applied in circuits, photovoltaic power generation, electrical components, etc., can solve the problems that the electrodes cannot reach the best shape, the conversion efficiency is not optimal, and the distribution of the horizontal height drop is large, so as to improve the product. Pass rate, reduce shading loss, optimize the effect of line shape

Pending Publication Date: 2020-08-07
西安宏星电子浆料科技股份有限公司
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

In the past two years, the development of no-knot, low-knot or less-knot technology has reduced the number of wefts to a certain extent, but the number of warps has always been unavoidable. At the same time, due to the difference in the leveling performance of different slurries, the electrodes cannot reach the maximum level. good form, such as Figure 4 , resulting in the application of the conversion efficiency on the electrode is not optimal
[0004] The current electrodes are all made of a single precious metal, which is costly. After printing and forming, and after forming, the level difference distribution is large, the height is low, and the resistance value is easy to be high, which affects the electron transmission and the conversion efficiency is restricted. For example, Figure 5-6

Method used

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  • Spraying system for preparing ultra-efficient solar cell electrode, and application of spraying system
  • Spraying system for preparing ultra-efficient solar cell electrode, and application of spraying system
  • Spraying system for preparing ultra-efficient solar cell electrode, and application of spraying system

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Embodiment

[0038] A spraying system for ultra-efficient solar cell electrode preparation, such as figure 1 , the system includes a slurry storage device 1, a spraying device 2 and a mask 3 to avoid contamination of areas other than the grid lines 4, the slurry storage device 1 and the spraying device 2 are connected by pipelines, and the mask 3 is located between the spraying device 2 and the solar energy between the battery electrodes.

[0039] The solar cell electrode includes a grid line 4 , a carrier 5 and a substrate 6 , the grid line 4 is located above the carrier 5 , the carrier 5 is located above the substrate 6 , and the mask 3 is arranged between the spraying device 2 and the carrier 5 . Disperse the slurry in the slurry storage device 1, keep the slurry in a spin bleaching state, and then spray the slurry through the mask 3 through the spraying device 2, so that the grid lines 4 are formed on the carrier 5, and then the ultra-high-efficiency solar cell is produced electrode....

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Abstract

The invention relates to a spraying system for preparing a super-efficient solar cell electrode, and application thereof. The system comprises a slurry storage device (1), a spraying device (2) and amask (3), wherein the slurry storage device (1) and the spraying device (2) are connected through a pipeline, and the mask (3) is arranged between the spraying device (2) and a solar cell electrode. The system is characterized in that (1) fully mixing slurry; (2) manufacturing a seed layer; (3) manufacturing a conductive transmission layer; and (4) carrying out a co-firing process, wherein after agrid line (4) is manufactured, an electrode is heated and sintered so as to form the super-efficient solar cell electrode. Compared with the prior art, the manufactured multilayer electrode of the invention is good in electrode compactness and good in grid line electrode stacking leveling property, current transmission is facilitated, the precious metal consumption is reduced, the cost is greatlysaved, and the operation yield is increased.

Description

technical field [0001] The invention relates to the technical field of photovoltaic power generation, in particular to a spraying system for preparing ultra-high-efficiency solar cell electrodes and its application. Background technique [0002] At present, with the continuous innovation and development of photovoltaic power generation technology, the requirements for photoelectric conversion efficiency are getting higher and higher. On the one hand, on silicon-based batteries, such as the current Perc (passivated emitter back contact) technology, HIT (heterojunction battery) technology, Topcon (tunneling oxide layer passivation battery) technology, N-type technology, etc., In addition to the need to improve the process, on the other hand, it is necessary to adjust the printing process. The main method is to reduce the width of the grid line, that is, the electrode, and increase the height of the grid line, that is, the electrode. The main purpose is to reduce the shading lo...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01L31/18H01L31/0224B41M1/18B41M1/26B41M5/00
CPCH01L31/18H01L31/022425H01L31/022433B41M1/26B41M1/18B41M5/0047Y02E10/50Y02P70/50
Inventor 孙永涛赵科良王大林寇航周任军刚党丽萍崔国强赵莹
Owner 西安宏星电子浆料科技股份有限公司
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