Process for preparing cathode grid line of solar cell

A technology for solar cells and front electrodes, applied in sustainable manufacturing/processing, circuits, electrical components, etc., to achieve the effects of reducing contact resistance, improving burn-through ability, and enhancing ohmic contact

Active Publication Date: 2014-12-31
SUZHOU ISILVER MATERIALS
View PDF5 Cites 1 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, the current slurry can only seek a balance between the two

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Process for preparing cathode grid line of solar cell
  • Process for preparing cathode grid line of solar cell
  • Process for preparing cathode grid line of solar cell

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1-5

[0036] Embodiment 1-5: A preparation process of solar cell front electrode grid wire, as attached Figure 1-3 As shown, the front electrode grid line of the battery is composed of a first slurry layer 1 and a second slurry layer 2 located on the upper surface of the first slurry layer 1;

[0037] Put the first slurry (A) and the second slurry (B) into containers connected to the lower nozzle 4 and the upper nozzle 3 respectively, the lower nozzle 4 and the upper nozzle are arranged in parallel closely and the upper nozzle 3 Located on the upper side of the lower nozzle 4; the spraying pressure of the lower nozzle 4 is 0.5MPa, the spraying pressure of the upper nozzle 3 is 0.65MPa, and the travel speed of the lower nozzle 4 and the upper nozzle 3 is 125mm / s; the front electrode grid line of the battery 5 is baked Drying temperature 140~160℃, drying time 14~16 minutes;

[0038] The first slurry (A) is composed of the following components in parts by weight:

[0039] Organic ve...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

PUM

No PUM Login to view more

Abstract

The invention discloses a process for preparing a cathode grid line of a solar cell. The cathode grid line of the solar cell consists of a first paste layer and a second paste layer positioned on the upper surface of the first paste layer. First paste and second paste are loaded into containers which are connected with a lower nozzle and an upper nozzle respectively. The upper and lower nozzles are tightly attached and arranged in parallel, and the lower nozzle is positioned on the upper lateral surface of the upper nozzle. The spray coating pressure of the lower nozzle is 0.5MPa, and the spray coating pressure of the upper nozzle is 0.65MPa. The travel speed of the lower and upper nozzles is 125mm / s. The first paste consists of an organic carrier, silver powder, glass powder and an ohm contact additive. The second paste consists of an organic carrier, silver powder, glass powder and a metallic-phase adhesive. A high-aspect ratio cathode of the solar cell can be prepared, and a problem about positioning accuracy is solved; and in addition, requirements for a cathode shape and electrical conductivity can be met, and silicon chip fragmentation caused by pressure applied to a silicon chip in a machining process can be avoided.

Description

technical field [0001] The invention relates to a preparation process of a front electrode grid line of a solar cell, and belongs to the technical field of solar cell preparation. Background technique [0002] A solar cell is a semiconductor device with "photovoltaic effect". The PN junction of the device generates voltage after being illuminated, that is, the process of generating electrical energy from light energy. Then, according to the above principle, the most critical thing is that there must be a connected circuit to form electrical energy into a current. to use. Therefore, it is very important to prepare electrodes on the surface of solar cells to draw current. At present, the industrialized solution is to print paste on both sides of the solar cell to make electrodes, one of which is used for the aluminum or aluminum / silver electrode on the back of the solar cell; the other is used for the light-receiving surface (front) of the solar cell Compared with the perfor...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

Application Information

Patent Timeline
no application Login to view more
Patent Type & Authority Patents(China)
IPC IPC(8): H01L31/18H01L31/0224
CPCY02P70/50
Inventor 周欣山汪山傅坚
Owner SUZHOU ISILVER MATERIALS
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap