Conductive paste and preparation method thereof
A technology of conductive paste and solar cells, which is applied in the field of solar cells, can solve the problems of lower photoelectric conversion efficiency, lower bonding force of silicon-aluminum layer, and bending of conductive paste, and achieve high photoelectric conversion efficiency, good adhesion, and bending degree small effect
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
Method used
Image
Examples
preparation example Construction
[0031] A kind of preparation method of above-mentioned conductive paste, it comprises:
[0032] (1) adding the organic binder into the organic solvent, heating and dissolving to obtain an organic carrier solution;
[0033] (2) Add glass powder selectively to the organic carrier solution under stirring, and then add aluminum powder; grind to make the fineness less than 20 μm.
[0034] Preferably, it is prepared as follows:
[0035] (1) get terpineol with mass ratio: dibutyl phthalate (DBP): butyl carbitol acetate=75: 15: 10 mix uniformly, make organic solvent; Dissolve in the above mixed solvent, fully dissolve at 50-80°C and stir evenly to obtain a transparent and uniform organic carrier solution.
[0036] (2) Put the organic carrier solution in the stainless steel tank of the high-speed disperser, while stirring, selectively add glass powder, and stir well; add aluminum powder in multiple times, stir well each time, and then add the next time; all After adding, stir at hig...
Embodiment 1
[0040] (1) Take terpineol according to the mass ratio: dibutyl phthalate (DBP): butyl carbitol acetate = 75: 15: 10 and mix evenly to make an organic solvent. Dissolve 2 parts by weight of organic binder C5 petroleum resin in 15 parts by weight of the above organic solvent, heat to 60°C to fully dissolve, and stir evenly to obtain a uniform and clear organic carrier solution.
[0041] (2) the above organic carrier solution is placed in the stainless steel tank of the high-speed disperser, while stirring, add 1 weight part of glass powder (composition is 60wt% BaO, 25wt% B 2 o 3 , 3.5wt% CaO, 5.0wt% SiO 2 , 2.5 wt% Al 2 o 3 , 2.0wt% ZnO, 1.0wt% MgO, 1.0wt% ZrO 2 ; Median particle size D 50 1.5 μm), stir evenly. Add 82 parts by weight of aluminum powder (spherical aluminum powder, D 50 4.5μm, the surface is covered with 3nm aluminum nitride), stir well before adding each time; after adding all, stir well at high speed; finally use 150 three-roller grinder for grinding, ...
Embodiment 2
[0043] The difference from Example 1 is: the aluminum powder is 80 parts by weight, the glass powder is 3 parts by weight, and the rest are the same as in Example 1. The conductive paste is designated as A2.
PUM
| Property | Measurement | Unit |
|---|---|---|
| particle size | aaaaa | aaaaa |
| particle size | aaaaa | aaaaa |
| particle size | aaaaa | aaaaa |
Abstract
Description
Claims
Application Information
Login to View More