Photovoltaic paste is the core auxiliary material in the production of photovoltaic cells, accounting for more than 30-40% of the non-silicon cost of cell manufacturing, and about 10% of the total cost of cells. Next, we will compare the respective advantages of photovoltaic paste companies in China.
Photovoltaic silver paste is a mixture of high-purity silver powder (conductive phase), glass oxide (bonding phase), organic resin and organic solvent (organic carrier), which is a uniform paste formed after stirring and three-roll rolling.
Photovoltaic cell electronic paste is mainly classified into:
Back silver pastep;
Back aluminum paste;
Front silver paste.
Location: Shanghai, China
Registered capital: 30.45 million RMB
Company website: http://www.ssp.group
SSP’s products are mainly used in 5G filters, GPS antennas, MLCC multilayer ceramic capacitors, photovoltaic shingled module packaging, and suitable for Perc, SE, N-type, Topcon, HJT, black silicon, fully passivated IBC, etc.
Polycrystalline high-efficiency photovoltaic cells. SSP-994, 995, 996 and other products produced by SSP have cooperated with JA Solar, Jolywood, Yijing and other companies. Now it has achieved a monthly shipment of nearly 15 tons, becoming one of the leaders in the industry. SSP is one of top 10 photovoltaic paste companies in China.
SSP reduces the grid line width of solar cells from 30 μm to 25 μm, 20 μm, and 15 μm while increasing the grid line aspect ratio, so as to reduce the electrode shading area and reduce the electrode line resistance, and finally achieve the result of reducing paste consumption and improving cell efficiency .
Location: Jiangsu, China
Total market value: 5.456 billion RMB
Company website: http://www.dkem.cn/
In the field of photovoltaic new energy, as one of the world’s leading suppliers of photovoltaic conductive silver paste, DKEM is deeply involved in the field of photovoltaic metallization and interconnection. It promotes the mass production practice of various photovoltaic technology through a rich portfolio of conductive silver paste products, and drives more green photovoltaic power into thousands of households.
In the field of semiconductor electronic packaging, DKEM also produces multi-dimensional product portfolios such as conductive silver paste and conductive adhesive. DKEM is also one of top 10 photovoltaic paste companies in China.
DKEM has assisted many industry-leading customers to achieve >23% conversion efficiency of P-type PERC cells in mass production and >24% conversion efficiency of N-type cells.
Location: Shenzhen, China
Registered capital: 55 million US dollars
Company website: https://www.dupont.cn/
Dupont continues to introduce leading performance conductive pastes for PERC, N-type and IBC cells to improve the conversion efficiency of solar cells and increase the output power of photovoltaic modules, and continue to lead the innovation of the photovoltaic industry.
In the past 9 years, Dupont has launched more than 130 new products, and each efficiency improvement has reduced the cost of photovoltaic system installation. In the past 12 years, Dupont photovoltaic conductive paste has helped improve the efficiency of solar cells by 30%. Therefore, Dupont is one of the top 10 photovoltaic paste companies in China.
Dupont’s new production line expands capacity for polyimide film and flexible circuit materials to meet growing world demand.
Location: Wenzhou, China
Registered capital: 36.18421 million RMB
Company website: http://www.gonda.cc/index.html
GONDA is a high-tech enterprise specializing in R&D and production of high-end electronic paste. At present, its main products include a series of electronic pastes such as front/back electrode pastes for crystalline silicon solar cells, high-performance conductive silver powders, low-temperature conductive pastes, and chip electronic component pastes. GONDA is one of the top 10 photovoltaic paste companies in China.
GONDA is constructing an annual production of 500 tons of solar electronic paste technical transformation project.
Location: Nantong, China
Total market value: 894 million RMB
Company website: http://www.tehsun.com.cn/Default.aspx
T-sun specializes in the R&D, production and sales of metal conductive pastes for high-efficiency crystalline silicon solar cells. Its products are mainly sold in Jiangsu, Shanghai, Zhejiang, Fujian, Guangdong, Taiwan and other places, and are also exported to India and Malaysia.
The company’s product quality and production scale rank second in the same industry in the world. In the next ten years, T-sun will build a comprehensive company integrating raw material production and modification, conductive paste for various crystalline silicon solar cells, and supporting screen plates. Meanwhile, it is one of the top 10 photovoltaic paste companies in China.
The back field silver paste developed by T-sun has successfully passed various performance inspection tests and is now on the market in large quantities.
Location: Zhejiang, China
Registered capital: 17.544 million
Company website: http://www.longsunet.cc/
Longsun is a high-tech enterprise specializing in the R&D, production and sales of photovoltaic new materials. The company is jointly invested and established by Delixi Group and Zhongxi Group. Longsun’s front-side silver paste has multiple series of products, which are widely applicable to the production requirements of solar cells with different types of process technologies such as monocrystalline and polycrystalline diamond wire non-network, PERC, black silicon, and N-type.
Compared with similar products in the market, Longsun has the advantages of high efficiency, fast printing and low consumption. It effectively improve photoelectric conversion efficiency by 0.05%~0.1% and reduce coating consumption and wet weight by 5%~10%, and print speed can be increased to 450mm/s. And it is one of top 10 photovoltaic paste companies in China.
Longsun has improved the front silver paste products of conventional polycrystalline cells, the front silver paste products of polycrystalline black silicon cells, and newly launched the front silver paste products suitable for MBB and monocrystalline PERC cells.
Location: Shanghai, China
Registered capital: USD 8.1 million
Company website: https://www.heraeus.cn/
Heraeus is a world leader in precious metal technology and one of the three major industrial precious metal traders, and has also introduced advanced production lines and equipment from Germany.
Its main products include precious metal compounds, platinum catalytic nets, platinum bushings, platinum systems and components for glass furnaces, sputtering targets, tungsten carbide beads, precious pigments, circuit component materials, photovoltaic materials (slurry for solar cells) , slurry for motorcycle catalysts, niobium-zirconium wire, etc. It is also on the list of top 10 photovoltaic paste companies in China.
Heraeus expects a surplus in the industrial platinum market. In 2023, mine supply is expected to increase by 10%.
Location: Shanghai, China
Total market value: 485 million RMB
Company website: www.transcom.cn
Transcom is a high-tech enterprise specializing in the R&D, production and sales of solar conductive silver paste, EMI shielding conductive coating and electronic paste. It is the first domestic front bank enterprise to achieve mass production.
Transcom has an advanced modern Class 10,000 clean room as a paste research and development laboratory, a development team with rich practical experience in the field of solar silver paste and electronic paste, and advanced research and development equipment.
In order to speed up the replacement of front-side silver products, the company added a battery production experiment line, including imported Despatch high-temperature sintering furnace, Asys high-precision screen printing, etc., which can accurately simulate the battery production process. It is also on the ranking of top 10 photovoltaic paste companies in China.
Transcom developed and mass-produced a series of solar cell electrode silver paste products, and won the highest honor, the Terawatt Diamond Award.
Location: Zhejiang, China
Registered capital: 47.494068 million RMB
Company website: http://www.right-silver.com/
Rightsilver is an enterprise specializing in the R&D, production and sales of solar cell paste. Its main products cover front-side silver paste, back-side silver paste and back-field aluminum paste. At present, it is also the research and development center of solar cell conductive paste in Zhejiang Province and a national science and technology small and medium-sized enterprise.
Rightsilver has become the first production-oriented enterprise in China that can launch a full set of solar cell electrode metallization pastes (front silver, back silver, and back aluminum) at the same time. It is one of top 10 photovoltaic paste companies in China.
Rightsilver’s leading product is back aluminum paste, with a world market share of 20%, ranking among the top three in the industry in China.
Location: Suzhou, China
Registered capital: 93.181716 million RMB
Company website: http://www.isilvermaterials.com/
Isilver is mainly engaged in the R&D and production of conductive pastes. Currently, the self-developed products can be double-layer printed, suitable for silver pastes for front electrodes of high and low square resistance crystalline silicon solar cells, low-cost silver pastes for backsides, and silver pastes for thin-film solar cells.
Isilver mainly has products including silver paste for automotive electronics, silver paste for printed electronics, IC packaging and RFID paste. Isilver is one of top 10 photovoltaic paste companies in China.
Isilver’s photovoltaic silver paste products are mainly PERC silver paste, and TOPCon and HJT paste have also achieved mass production. Among them, the sales of PERC increased significantly, and the shipment of HJT slurry in the first three quarters was close to 20 tons.