In recent years, with the support of national policies, the high prosperity of the photovoltaic industry has also driven the rapid growth of demand for photovoltaic wet process chemicals. Data show that my country’s domestic demand for photovoltaic wet process chemicals will reach 379,000 tons in 2020. It is conservatively estimated that the market space for photovoltaic wet process auxiliary products in my country will reach 894.6646 million yuan in 2022 and will grow to 124,867.43 million yuan by 2025.
Benefiting from the support of national policies and technological progress in the industry, the photovoltaic industry has developed rapidly, and more companies have been attracted to join the industry competition through new establishment or business extension. However, due to the high technical barriers and customer barriers of wet process auxiliary products, it is difficult for new market entrants to quickly gain customer recognition. Therefore, the number of major participants in the domestic wet process auxiliary product market has remained basically stable.
Junhe system solution:
Junhe Technology has been deeply engaged in the field of fine chemicals in photovoltaic processes for many years, continuously providing high-quality chemicals and the most professional services to upstream and downstream photovoltaic manufacturers. Its products have been exempted from quality inspection by many strategic customers, and its quality has remained in the top tier.
Silicon material end
On the silicon material side, Junhe launched a new generation of diamond abrasive wire cutting fluid, which greatly improved product performance, specifically in terms of enhanced cleaning ability, suitable for offline and large cycles, and an overall yield increase of 2% on the production line, with better environmental performance. In the silicon wafer cleaning process, we have also made further upgrades, which have greatly improved the cleanliness of silicon wafers, which is higher than the industry average.
JUNHE ® 2523 Diamond wire cutting fluid
JUNHE®2523 Diamond Wire Cutting Fluid is used in the cutting process of various super-hard and brittle materials (monocrystalline silicon, polycrystalline silicon, germanium, gallium arsenide, quartz, indium gallium nitride, gemstones, non-metallic materials, etc.), and it has excellent lubrication, cooling, anticorrosion, anti-corrosion, anti-rust, and hydrogen inhibition functions, and the surface of the wafer has low TTV and no wire traces after cutting and it is able to prolong the service life of the diamond wire.
Features
1.Low economic cost：Single component, high cost performance.
2.Good cleaning ability：Containing unique chemical cleaning additives, it makes the cut silicon wafer clean and easy to clean after cutting.
3.Excellent lubrication ability：Excellent lubrication can effectively prevent brittle chipping or scratches from occurring on the wafer during the cutting process, reduce the surface roughness and surface warpage of the wafer, and minimize the total thickness deviation of the processed wafer.
4.Environmental friendly
Selection of environmentally friendly materials, less foam, low cost of waste water treatment, easy to use.
5.Good dispersion performance：Unique suspension to avoid silicon powder deposition to block the machine pipeline.
6.Strong adaptability：Good compatibility, suitable for offline or large cycle.
JUNHE ® 1015 Solar Silicon Wafer Cleaner
JUNHE®1015 is a patented product (Patent No. ZL 200710020269.6) developed for the special cleaning requirements of electronic grade and solar grade silicon wafers in microchip and solar cell industries. It is a two-component product with good performance in emulsification, saponification and cleaning of animal oil, vegetable oil, mineral oil, suspension and milling paste, and strong stripping, complexing and cleaning effect on metal ions, good environmental protection and strong cleaning ability.
Features
1、Strong cleaning ability: It is a highly concentrated two-component product, especially suitable for cleaning heavily polluted silicon wafers, and can meet the requirements of semiconductor industry.
2、environmental friendly: the product does not contain calcium, magnesium, iron, copper, lead and other metal ions, also does not contain phosphorus, in line with the EU RoHS requirements.
3、strong foam inhibition: low-foam products, ultrasonic cleaning line use, there will be no foam overflow.
Battery side
On the battery side, Junhe focuses on solving the technical difficulties of Topcon batteries and Perc batteries. In the manufacturing process of Perc battery products, we exhibited monocrystalline silicon texturing additives and monocrystalline silicon alkaline polishing additives to further improve the photovoltaic conversion efficiency of battery cells and reduce customer production costs. Similarly, in the manufacturing process of Topcon batteries, we launched JUNHE®2570 de-wrap plating additives to solve the difficulty of Topcon battery leakage. We were highly praised by customers at the exhibition and expressed their intention to cooperate.
JUNHE®2550 Monocrystalline cell texturing auxiliary additives
JUNHE®2550 Monocrystalline cell texturing auxiliary additives is a water-soluble, non-toxic and non-hazardous additive that meets the requirements of environmental protection. This product can form micron-level pyramid velvet on the surface of silicon wafers by improving the etching selection ratio of inorganic alkali on silicon, thus achieving good light trapping effect.
Features
1、Environmental friendly: no need to use IPA and other alcohol products, can achieve selective etching.
2、Low production costs: low additive amount, velour production time is only 6-8 minutes, the cost is much lower than IPA velour production process.
3、High etching efficiency: Compared with IPA velvet making process, the uniformity of velvet surface and reflectivity is better.
4、No initial casting process: greatly reduce the cost of its own additives more environmentally friendly.
JUNHE®2510 Alkali polishing additive for solar cells
JUNHE®2510 monocrystalline cell sheet alkali polishing auxiliary additive for Perc, Topcon solar cell backside alkali polishing and Topcon solar cell de-winding plating, is a water-soluble, non-toxic and harmless additive in line with environmental requirements. This product can greatly improve the corrosion selection ratio of inorganic alkali on silicon dioxide layer and silicon, and greatly reduce the corrosion of inorganic alkali on silicon dioxide layer or PSG layer while realising the polishing and etching of silicon.
Features
1. Low cost of use
Significantly reduce the amount ofalkali supplement, reduce the cost of materials ; loweramount of additives to meet the needs ofthe factory to reduce consumption.
2.Reaction Controllable
More complete pyramid morphology.
3.Width ofProduction Window
it can adapt the process temperature of 58-65 °C.
JUNHE®2570 Auxiliary additives for removing amorphous silicon of TopCon cells
JUNHE®2570 is a water-soluble, non-toxic and non-hazardous auxiliary additive developed by JUNHE for the removal of amorphous silicon from photovoltaic Topcon cells, which meets the requirements of environmental protection. This product can greatly improve the corrosion selectivity ratio of inorganic alkali to the amorphous silicon winding plating layer of Topcon cell, and greatly reduce the corrosion of inorganic alkali to the positive film silicon dioxide layer or PSG layer while realising the etching of silicon.
Features
1. Environmental friendly：Selective etching can be achieved without the use of organic bases such as TMAH.
2.Low production cost：Compared with the market pre-treatment using hydrofluoric acid / nitric acid, the production cost is greatly reduced.
3. High etching efficiency：Compared with Perc cell process, the conversion efficiency is significantly improved.
Assembly end
On the component end, Junhe has conducted in-depth research and development to launch environmentally friendly flux. According to feedback from a large number of customers, Junhe’s flux effectively reduces the false soldering rate and the fragmentation rate, and leaves no residue on the surface after welding, which is unanimously recognized. Junhe’s photovoltaic glass anti-reflection coating liquid adopts internationally advanced technology formulas and foreign high-quality raw materials to achieve the maximum anti-reflection effect while ensuring the product’s aging resistance and anti-fouling performance. Junhe has developed photovoltaic high-reflection glazes for photovoltaic dual-wave module backplane glass, which achieves high reflection, high weather resistance and corrosion resistance of the glaze, wide construction conditions, and is suitable for different tempering parameters.
JUNHE® 2610 no-clean flux
JUNHE® 2610 no-clean flux is a low-solids, halogen-free, water-soluble flux for soldering and automated soldering of solar cell wafers coated by immersion or spray. The flux does not contain turpentine, resulting in clean and full solder joints with little residue on the surface and high surface insulation resistance.
Features
1.Specificity of use：Specially used for welding the welding ribbon of solar photovoltaic modules.
2.Excellent strain regulation：By adjusting the type or proportion of low-, medium- and high-boiling point solvents in the formula, it maintains excellent activity within the welding temperature window.
3.High efficiency of good products：The synergy of various penetrating agents and wetting agents reduces the surface tension between the wafer and the solder tape, reducing the rate of false soldering and fragmentation.
4.No cleaning after soldering：Low solid content, clean surface of copper skin after soldering, less oily, crystalline and other residues, no cleaning.
5.Good safety and environmental protection：Comply with RoHS and REACH standards, meet the International Electrotechnical Association IEC 61249-2-21 halogen-free standards.
JUNHE ® 1688 Single-layer and double-layer photovoltaic glass anti-reflection coating fluid
JUNHE®1688S single-layer coating solution and JUNHE®1688D double-layer coating solution are milky-white liquids obtained by reacting hollow silica nanoparticles with reactive groups with organic substances. The coating liquid is coated on the glass surface by roller coating process. After medium temperature curing and high temperature sintering, the organic matter is completely burned off, the nanoparticles will be tightly bonded with each other and rely on the hollow structure of the silica nanoparticles to produce a lower refractive index of the film layer.
Features
1. Aging and dirt resistance：The product uses core-shell nanoparticles with active groups to form a film, which ensures aging resistance and dirt resistance while achieving the maximum anti-reflection effect, greatly improving the power generation of photovoltaic modules.
2.Good transmittance enhancement effect：Single-layer coating liquid mass production transmittance can be stabilised at 2.2-2.30%; while the actual transmittance enhancement effect of single-layer coating liquid mass production in the industry during the same period is generally 2.15-2.25%.
Double-layer coating liquid has a unique double refractive index matching, forming a highly efficient double-layer transmittance enhancement film, increasing the transmittance rate of about 2.45-2.55% (relative to the uncoated glass), while the actual transmittance increase effect of single-layer coating liquid in the industry is generally 2.15-2.25%.In the same period of time, the monitoring of the actual transmittance enhancement effect of double-layer coating liquid in bulk in the industry is generally 2.35-2.45%.
3.Good after-sales service
Our company is equipped with a number of engineers with more than 10 years of experience in coating, who can follow up and cooperate with customers on site according to their requirements to ensure continuous and stable production.
