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Etching method for improving power of light-transmitting solar cell module

A technology of battery components and solar thin films, which is applied in the direction of electrical components, circuits, semiconductor devices, etc., can solve the problems of affecting the electrical characteristics of batteries, affecting the output power of components, and increasing the number of defects, so as to reduce the cost of unit power generation, reduce leakage, Ensure the effect of light transmission performance

Inactive Publication Date: 2013-09-11
BAODING TIANWEI GRP CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In the process of light transmission treatment, the area is 1.1×1.3m 2 1. Take a battery module with a light transmittance of 30% as an example. If the laser spot diameter is usually 150 μm, in order to achieve a transmittance of 30%, it is necessary to scribe 2860 grooves, resulting in an increase in the number of defects introduced at the edge of the groove, which affects the battery. Electrical characteristics, especially for products with higher requirements for light transmittance, the more linear grooves are scored, the greater the probability of scratching defects, which will reduce the performance of the component and seriously affect the output power of the component

Method used

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  • Etching method for improving power of light-transmitting solar cell module
  • Etching method for improving power of light-transmitting solar cell module
  • Etching method for improving power of light-transmitting solar cell module

Examples

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Effect test

Embodiment 1

[0025] The method for improving the power of the light-transmitting component by optimizing the scribing method includes the following steps:

[0026] a. see figure 1: Utilize low-pressure chemical vapor deposition technology or magnetron sputtering technology to deposit transparent conductive film on the insulating substrate 1 float glass as the front electrode of the battery, the first transparent conductive electrode layer 2; then use plasma chemical vapor deposition technology (PECVD ) Deposit thin-film silicon p-i-n or p-i-n / p-i-n laminate structure and triple-junction silicon-based film structure on the coated glass substrate, photoelectric conversion layer 3; use low-pressure chemical vapor deposition technology to grow transparent conductive film on the above photoelectric conversion layer as a battery The back electrode is the second transparent conductive electrode layer 4 .

[0027] b. see figure 1 : In this embodiment, laser scribing is used to scribe the linear ...

Embodiment 2

[0034] The method for improving the power of the light-transmitting component by optimizing the scribing method includes the following steps:

[0035] a. see figure 1 : Utilize low-pressure chemical vapor deposition technology or magnetron sputtering technology to deposit transparent conductive film on the insulating substrate 1 float glass as the front electrode of the battery, the first transparent conductive electrode layer 2; then use plasma chemical vapor deposition technology (PECVD ) Deposit thin-film silicon p-i-n or p-i-n / p-i-n laminate structure and triple-junction silicon-based film structure on the coated glass substrate, photoelectric conversion layer 3; use low-pressure chemical vapor deposition technology to grow transparent conductive film on the above photoelectric conversion layer as a battery The back electrode is the second transparent conductive electrode layer 4 .

[0036] b. see figure 2 Enlarged picture in the middle: In this embodiment, laser scribi...

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Abstract

The invention relates to a scribing method for improving the power of a light-transmitting solar cell assembly, and belongs to the technical field of solar cell applications. Under the condition that the light-transmitting performance of the light-transmitting solar cell module remains unchanged, the purpose of improving the power of the module is achieved by optimizing the light-transmitting scribing method. The width of the optical groove (9) is used to adjust the number of scribed light-transmitting grooves per unit area, and to reduce the number of scribed light-transmitting grooves on the basis of ensuring that the light-transmitting performance remains unchanged, so as to reduce the impact on the film during the scribing process. Leakage caused by damage to the edge of the layer, so that the light transmittance of the component can be kept unchanged, and the power generation can be greatly improved. The present invention analyzes the source of leakage, aims at reducing the probability of leakage, optimizes the way of marking, and does not change much in equipment adjustment, so it has the characteristics of good controllability and flexible change mode, and is the best way to achieve high transparency. An efficient way to rate high power products.

Description

technical field [0001] The invention relates to a scribing method for improving the power of a light-transmitting solar cell assembly, and belongs to the technical field of solar cell applications. Background technique [0002] At present, building integrated photovoltaic (BIPV) building is the most advanced and most potential high-tech green energy-saving building, and it is also an important direction for large-scale use of photovoltaic technology in the world. BIPV refers to the installation of solar photovoltaic power generation phalanx on the outer surface of the maintenance structure of the building to provide electricity. Since the combination of photovoltaic arrays and buildings does not occupy additional ground space, it is the best installation method for photovoltaic power generation systems to be widely used in cities, and thus has attracted much attention. The types of solar cell components that can be applied to BIPV buildings include monocrystalline silicon, ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01L31/18
CPCY02P70/50
Inventor 杜洁王辉王继存单旭影贾海军麦耀华
Owner BAODING TIANWEI GRP CO LTD
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