N-type crystalline silicon solar cells have the advantages of high minority carrier life, no light attenuation, good weak light effect, small temperature coefficient, etc., which is the hope for the crystalline silicon solar cells to move towards the highest theoretical efficiency. Itrpv 2018 predicts that the market share of n-type silicon wafer will continue to increase, nearly 10% in 2020 and 28% in 2028. N-type crystalline silicon battery mainly includes n-pert / n-perl battery, interdigital back contact battery (IBC) and heterojunction battery. In August 2017, the HBC battery efficiency of Kaneka company in Japan reached a record 26.63% by using heterojunction and back contact technology.

The n-pert and n-perl batteries have simple structure, great potential for efficiency improvement, and can generate electricity from both sides. Zhonglai, Yingli and Linyang have realized the mass production of n-type single crystal double-sided high efficiency batteries. Passivation contact technology can greatly improve the conversion efficiency of n-type battery, which is an important development direction of n-type battery. The whole back passivation is realized by tunneling oxide layer and doping polysilicon layer on the back of the battery, and the muon can penetrate the two passivation layers without opening the hole, avoiding the damage of silicon material at the opening and the combination of metal contact area. In May 2018, China Lilai signed a contract with state power investment Huanghe hydropower Co., Ltd. to deliver a total of 5GW n-type single crystal double faced TOPCON batteries in 2019-2021.

Heterojunction battery has a series of advantages, such as high energy conversion efficiency, simple low-temperature manufacturing process, thin silicon application, low temperature coefficient and CTM, and double-sided power generation. The key to low-cost mass production of heterojunction battery lies in the localization of equipment, the improvement of yield and production capacity, and the reduction of the cost of silicon wafer, low-temperature silver paste, TCO target and cleaning down chemicals. Fujian Jinshi energy, Jinneng and CIIC power have realized the mass production of heterojunction batteries. In 2018, Tongwei, Aikang, rainbow and other enterprises started to build new capacity of heterojunction battery.

The p-n junction and electrode of IBC battery are all on the back side, completely eliminating the shading of the front surface grid line, and the average mass production efficiency can reach 23%. However, IBC batteries require high quality silicon wafer, and the process is relatively complex, so the cost is high. Industrial technologies such as screen printing, tube diffusion or ion implantation are used to reduce the cost of IBC batteries, and passivation contact technology is used to improve the efficiency of IBC batteries. At the beginning of 2018, Trina Solar's 6-inch IBC battery achieved a full area efficiency of up to 25.04%. In August 2018, the 200MW IBC battery and component project of Huanghe hydropower was officially started.

The third n-type crystalline silicon battery and passivation contact technology forum will be held in Changzhou, Jiangsu Province on December 6-7, 2018. The conference will discuss the prospect of photovoltaic industry and the market of n-type battery and double-sided power generation, the prospect of improving the quality of n-type silicon wafer, flaking and reducing the cost, the key equipment and process optimization of large-scale production of n-pert / n-perl battery, heterojunction battery and IBC battery, the prospect of application and efficiency improvement of passivation contact technology in n-type battery, the metallization process and advanced conductive paste of n-type battery and passivation contact, n The real power generation benefits of double glass double-sided, multi main grid and laminated tile modules of type a battery.


Notice of relevant matters is as follows:

1、 Seminar topics:
1. Prospect of photovoltaic industry and market analysis of n-type battery and double-sided power generation
2. Prospects for quality improvement, flaking and cost reduction of n-type silicon wafers
3. Comparison of different processes of n-pert / n-perl battery
4. Prospect of application and efficiency improvement of passivation contact technology in n-type battery
5. Metallization process suitable for passivation contact technology
6. Key doping and deposition equipment for n-type battery and passivation contact process
7. Key technologies of heterojunction battery: cleaning and fluxing, amorphous silicon film and TCO film deposition
8. Advanced metallization process and conductive paste for heterojunction battery
9. Localization of key equipment and consumables for heterojunction battery
10. Analysis of the potential for mass production efficiency improvement and cost reduction of heterojunction batteries
11. Low cost IBC battery manufacturing process development and mass production
12. Application path of passivation contact technology in IBC battery
13. Prospect of the combination of heterojunction and IBC Technology
14. Real power generation income and economic advantages of n-type battery double-sided module
15. Application of n-type battery in double glass double-sided, multi main grid and laminated tile components

2、 Time: December 6-7, 2018
3、 Location: Sheraton Changzhou Fuli Hotel
4、 Registration time: 16:00-21:00, December 5, 2018
5、 Please contact:
Manager Chen: 021-68726606-109 / 13701609248 (wechat same number)
Joanna,u chen@
.25110;.28857;.20987;65306; 253;.21517;

Conference fee: 3200 yuan / person, team registration (same company ≥ 3 people) 2900 yuan / person; foreign guests need another 2000 yuan English service fee note: the fee on the day of the meeting includes: lunch, tea break, dinner, Chinese Conference information, venue tickets, etc., excluding accommodation, accommodation fee shall be directly settled with the hotel before check-out; English service fee includes: English conference information on the day of the meeting, simultaneous interpretation fee, etc
The measure of area: 750m2

• 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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