Silver paste used for positive electrodes of solar batteries and grid lines, preparation method thereof and solar battery containing same
A technology for solar cells and front electrodes, applied in the field of solar cells, can solve the problems of low photoelectric conversion efficiency, difficult to pass through the wire mesh, and difficult to effectively transmit the current of the cell, so as to improve the photoelectric conversion efficiency, reduce the degree of agglomeration, and achieve excellent photoelectric conversion efficiency. The effect of conversion efficiency
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
Method used
Image
Examples
Example Embodiment
[0028] Example 1
[0029] The preparation of the silver paste for the front electrode of the solar cell and the grid line includes the following steps:
[0030] 1. Prepare highly dispersed ultrafine silver powder slurry by chemical liquid phase reduction method: prepare 20L of silver nitrate into a 0.15mol / L solution, adjust its pH to 7 with ammonia and nitric acid to form a silver ammonia solution, and then The reducing agent hydrazine hydrate is made into a 0.30mol / L solution of 20L, then 100g of the dispersant polyvinylpyrrolidone is added to the reducing agent solution, the pH value is adjusted to 8 with ammonia and nitric acid, and the silver ammonia solution is heated at 300 rpm Under electric stirring, add dropwise to the reducing agent and dispersant solution at a dropping rate of 2L / min. After the dropping is completed, react for another 10 minutes to obtain a highly dispersed ultrafine silver powder slurry;
[0031] 2. Solid-liquid separation of the ultrafine silver powder...
Example Embodiment
[0035] Example 2
[0036] The preparation of the silver paste for the front electrode of the solar cell and the grid line includes the following steps:
[0037] 1. Prepare highly dispersed ultrafine silver powder slurry by chemical liquid phase reduction method: prepare 20L of silver nitrate into a 0.15mol / L solution, adjust its pH to 7 with ammonia and nitric acid to form a silver ammonia solution, and then The reducing agent formaldehyde is prepared into 20L of 0.30mol / L solution, and then 100g of dispersant polyvinyl alcohol is added to the reducing agent solution, the pH value is adjusted to 8 with ammonia and nitric acid, and the silver ammonia solution is driven at 300 revolutions per minute. Add dropwise to the reducing agent and dispersant solution under stirring at a dropping rate of 2L / min. After the dropping is completed, react for 10 minutes to obtain a highly dispersed ultrafine silver powder slurry;
[0038] 2. Solid-liquid separation of the ultrafine silver powder slu...
Example Embodiment
[0042] Example 3
[0043] The preparation of the silver paste for the front electrode of the solar cell and the grid line includes the following steps:
[0044] 1. Prepare highly dispersed ultrafine silver powder slurry by chemical liquid phase reduction method: prepare 20L of silver nitrate into a 0.15mol / L solution, adjust its pH to 7 with ammonia and nitric acid to form a silver ammonia solution, and then The reducing agent ascorbic acid is prepared into 20L of 0.30mol / L solution, and then 100g of dispersant gelatin is added to the reducing agent solution, and the pH value is adjusted to 8 with ammonia and nitric acid, and the silver ammonia solution is stirred at 300 revolutions per minute. Add dropwise to the reducing agent and dispersant solution at a dropping rate of 2L / min. After the dropping is completed, react for another 10 minutes to obtain a highly dispersed ultrafine silver powder slurry;
[0045] 2. Solid-liquid separation of the ultrafine silver powder slurry to obta...
PUM
Property | Measurement | Unit |
---|---|---|
Resistivity | aaaaa | aaaaa |
Granularity | aaaaa | aaaaa |
Resistivity | aaaaa | aaaaa |
Abstract
Description
Claims
Application Information
- R&D Engineer
- R&D Manager
- IP Professional
- Industry Leading Data Capabilities
- Powerful AI technology
- Patent DNA Extraction
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