Metallization is a key step in the production of crystalline silicon solar cells. Through the means of screen printing and sintering of conductive paste, metallized electrodes are prepared on the front and back of the silicon wafer, so as to export the photocarriers to the cells. Slurry is the key material of metallization process, which accounts for about 50-60% of the non silicon cost of battery chip. The slurry is composed of conductive phase, binder and organic carrier, including front silver slurry, back silver slurry and back aluminum slurry, which has an important impact on the photoelectric conversion efficiency and cost of the battery.

In 2018, the new installed capacity of photovoltaic in the world exceeded 100gw, bringing a huge market of 10 billion level to the conductive slurry industry. At the same time, due to the continuous demand for efficiency improvement and cost reduction pressure, crystalline silicon solar cells and component technology are rapidly updated and iterated, which puts forward higher requirements for metallization process and conductive slurry. With the improvement of the localization rate of Zhengyin, the battery enterprises can reduce the cost of paste. Chinese enterprises are constantly introducing new conductive paste for efficient solar cells.

Perc battery requires that the slurry has a wide sintering process window and can match the laser se process; perc back silver should not burn through the back passivation layer and have good tensile performance, and well match the perc aluminum slurry. The double-sided perc battery needs to improve the aspect ratio and reduce the resistance while reducing the amount of aluminum paste. However, the burn through aluminum slurry technology can save the laser drilling step of the back passivation film and reduce the cost of the battery.

In 2018, Tongwei, Aikang, rainbow and other enterprises started to build new capacity of heterojunction battery. The heterojunction battery needs low temperature silver paste, which requires good contact with the TCO layer, rapid curing to shorten the process time, lifting the tension to meet the MBB demand, and it is best to store at room temperature. In addition to silver paste metallization, meyerberg has introduced smartwire smart grid connection technology for heterojunction batteries, which uses copper wire metallization; MECO has also introduced plating metallization technology that can improve battery efficiency.

The n-type double-sided battery urgently needs to reduce the consumption of silver paste to control the cost. Passivation contact technology can greatly improve the conversion efficiency of n-type battery, which is an important development direction of n-type battery. Black silicon technology is becoming the standard for polycrystalline batteries. The special nanostructure on the surface of black silicon batteries requires high tensile force and positive silver which can balance contact resistance and open circuit voltage.

The fifth solar cell slurry and Metallization Technology Forum will be held in Changzhou, Jiangsu Province on March 21, 2019. The conference will discuss the global and Chinese photovoltaic industry outlook and slurry market prospect, new efficient solar cell technology and corresponding metallization process and conductive slurry, research on conductive mechanism and contact mechanism of sintered silver slurry and low-temperature silver slurry, positive localization and cost reduction path of silver slurry, technological progress and investment opportunities of silver slurry and aluminum slurry, production and supply and demand of key raw materials for photovoltaic slurry, etc.

Notice of relevant matters is as follows:

1、 Seminar topics:
1. Global and Chinese PV industry outlook and slurry Market Prospect
2. High efficiency battery metallization process and conductive paste: perc, hjt and n-type battery
3. Sintered silver paste and low temperature silver paste -- Research Progress of conductive mechanism and contact mechanism
4. Burn through aluminum paste and metallized pattern design for perc battery
5. Improvement of screen printing technology and improvement of yield
6. Metallization scheme of multi main grid cell and super fine line printing paste
7. Technology of netting without net and scheme of supporting silver pulp products
8. Development and application of silver paste for black silicon battery
9. Main gate free metallization and electroplating Metallization Technology for heterojunction battery
10. Metallization process and conductive paste for passivation contact battery
11. Localization trend and investment opportunity of new high efficiency silver paste for battery
12. Technical prospect and cost reduction path of photovoltaic conductive paste
13. Quality control of large-scale production of silver slurry and aluminum slurry
14. Selection of key raw materials for photovoltaic slurry: silver powder, aluminum powder, glass powder and organic carrier
15. Technical advantages and development prospect of electroplating metallization

2、 Time: March 21, 2019
3、 Location: Sheraton Changzhou Fuli Hotel
4、 Registration time: 16:00-21:00, March 20, 2019
5、 Please contact:
Manager Chen: 021-68726606-109 / 13701609248 (wechat same number)
        或Joanna_chen@
.25110;.28857;.20987;65306;

1、 Seminar topics:
1. Global and Chinese PV industry outlook and slurry Market Prospect
2. High efficiency battery metallization process and conductive paste: perc, hjt and n-type battery
3. Sintered silver paste and low temperature silver paste -- Research Progress of conductive mechanism and contact mechanism
4. Burn through aluminum paste and metallized pattern design for perc battery
5. Improvement of screen printing technology and improvement of yield
6. Metallization scheme of multi main grid cell and super fine line printing paste
7. Technology of netting without net and scheme of supporting silver pulp products
8. Development and application of silver paste for black silicon battery
9. Main gate free metallization and electroplating Metallization Technology for heterojunction battery
10. Metallization process and conductive paste for passivation contact battery
11. Localization trend and investment opportunity of new high efficiency silver paste for battery
12. Technical prospect and cost reduction path of photovoltaic conductive paste
13. Quality control of large-scale production of silver slurry and aluminum slurry
14. Selection of key raw materials for photovoltaic slurry: silver powder, aluminum powder, glass powder and organic carrier
15. Technical advantages and development prospect of electroplating metallization

• Telephone:021-68726606-109
• Truename:Manager Chen
• Mobile:13701609248
• E-mail:Joanna_chen@chemweekly.com
• QQ:410192892
• Address:Xinjinqiao Road, Pudong New Area, Shanghai

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