Glass powder used for silver paste on front surface of crystalline silicon solar cell and preparation method of glass powder

A technology for solar cells and glass powder, applied in the field of solar cell materials, can solve the problems of high glass transition temperature, high sintering temperature of glass powder, uneven particle size, etc., and achieves the effects of low cost, low melting point and increased utilization rate

Inactive Publication Date: 2017-06-27
SOUTHEAST UNIV
View PDF7 Cites 7 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] Technical problem: The purpose of this invention is to provide a glass powder for front silver paste of crystalline silicon solar cells and its preparation method, which is dedicated to solving the problems of excessively high sintering temperature of glass powder, high or low glass transition temperature, long ball milling time and Problems such as uneven particle size

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
  • Glass powder used for silver paste on front surface of crystalline silicon solar cell and preparation method of glass powder
  • Glass powder used for silver paste on front surface of crystalline silicon solar cell and preparation method of glass powder
  • Glass powder used for silver paste on front surface of crystalline silicon solar cell and preparation method of glass powder

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0040] Weigh 100g of the ingredients according to the composition ratio in Example 1 in Table 1, grind and mix them evenly, place them in a corundum alumina crucible, put them in a muffle furnace for heating after numbering, gradually increase from room temperature to 850°C, and keep warm for 2 Hours, to obtain a glass melt; pour the obtained glass melt into deionized water for water quenching to obtain glass shards, and then dry the glass particles in a blast drying oven at 70°C for 3 hours; the dried glass particles Carry out manual grinding, pass through 400 mesh and 100 mesh screens respectively, and obtain glass powder coarse powders of 30-90 μm and 100-220 μm respectively; conduct ball milling on glass powders passing through 100 mesh screens twice, and the diameters of the three kinds of grinding balls used are They are 10mm, 8mm and 5mm respectively. The primary ball milling process is: ball-material ratio 2:1, ball grading ratio of large, medium and small balls 1:1:1,...

Embodiment 2

[0043] Weigh 100g of the ingredients according to the composition ratio in Example 2 in Table 1, grind and mix them evenly, place them in a corundum alumina crucible, put them in a muffle furnace for heating after numbering, gradually increase from room temperature to 900°C, and keep warm for 1 Hours, to obtain a glass melt; pour the obtained glass melt into deionized water for water quenching to obtain glass shards, and then dry the glass particles in a blast drying oven at 100°C for 2 hours; the dried glass particles Carry out manual grinding, pass through 400 mesh and 100 mesh screens respectively, and obtain glass powder coarse powders of 30-90 μm and 100-220 μm respectively; conduct ball milling on glass powders passing through 100 mesh screens twice, and the diameters of the three kinds of grinding balls used are They are 12mm, 8mm and 4mm respectively. The primary ball milling process is: ball-to-material ratio 2.5:1, the ball grading ratio of large, medium and small ba...

Embodiment 3

[0046] Weigh 100g of the ingredients according to the composition ratio in Example 3 in Table 1, fully grind, stir and mix them evenly and place them in a corundum alumina crucible. Hours, to obtain a glass melt; pour the obtained glass melt into deionized water for water quenching to obtain glass shards, and then dry the glass particles in a blast drying oven at 120°C for 1 hour; the dried glass particles Carry out manual grinding, pass through 400 mesh and 100 mesh screens respectively, and obtain glass powder coarse powders of 30-90 μm and 100-220 μm respectively; conduct ball milling on glass powders passing through 100 mesh screens twice, and the diameters of the three kinds of grinding balls used are They are 12mm, 9mm and 7mm respectively. The primary ball milling process is: ball-material ratio 4:1, ball grading ratio of large, medium and small balls 16:4:1, rotating speed 300r / min, solid-liquid ratio 1:1, ball milling time 4h, secondary ball milling process is: ball m...

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

PropertyMeasurementUnit
particle sizeaaaaaaaaaa
glass transition temperatureaaaaaaaaaa
particle diameteraaaaaaaaaa
Login to view more

Abstract

The invention provides glass powder used for silver paste on a front surface of a crystalline silicon solar cell and a preparation method of the glass powder. The glass powder is low-melting glass powder and comprises the following ingredients by weight percentage: 10-72% of PbO, 20-50% of TeO2, 2-20% of SiO2, 3-20% of B2O3, 1-5% of R2O, 0.5-10% of TiO2, 0.4-10% of V2O5, 1-20% of ZnO and 0.1-10% of P2O5, wherein R2O is selected from one or a mixture of metallic oxides containing Li, Na or K, so that the cost of raw materials of the glass powder is reduced on the premise that the property of the glass powder is not influenced. The glass powder is prepared by mixing and ball-milling of the raw materials weighed at a proportion; the glass powder is thinner and uniform in grain size and has the advantages that the cost is low, the melting point is low, the GTT (glass-transition temperature) is appropriate and the like, therefore, the utilization rate of the glass powder is greatly improved.

Description

technical field [0001] The invention relates to a glass powder for front silver paste of a crystalline silicon solar cell and a preparation method thereof, belonging to the technical field of solar cell materials. Background technique [0002] The commonly used paste for crystalline silicon solar cells is silver conductive paste. Silver electrodes are usually made by screen printing. Compared with other technologies (such as evaporation and electroplating technology, etc.) Suitable for industrial production. The front silver paste used in crystalline silicon solar cells mainly includes three components: a conductive functional phase (silver powder), an inorganic binder phase (glass powder), and an organic vehicle (resin binder). [0003] As the binder phase of the electrode paste, the performance of the glass powder directly determines whether the paste can form a good electrochemical contact with the silicon substrate after sintering. By studying the related properties of...

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 Applications(China)
IPC IPC(8): C03C12/00H01L31/0224
CPCC03C12/00H01L31/022425Y02E10/50
Inventor 林保平王双华孙莹张雪勤杨洪
Owner SOUTHEAST UNIV
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