Abstract On September 8th, along with the roar of hoisting machinery, the first batch of “black silicon†production equipment entered the newly built factory of Yangzhou GCL Solar, which means that this “black silicon plant†was officially launched and will be put into production. ..
On September 8, along with the roar of hoisting machinery, the first batch of “black silicon†production equipment entered the newly built factory of Yangzhou GCL Solar, which means that this “black silicon plant†was officially launched and will be put into production, which means black. Silicon, the "black technology" of the solar photovoltaic industry, will achieve mass production in Yangzhou. After the base is put into production, it will become the largest wet black silicon wafer production base in the country and the world. The large black silicon plant has opened Yangzhou as an important production base of GCL Solar in the country and has mature silicon wafer production technology. On February 6 this year, GCL-Poly, the subsidiary of GCL-Poly, announced that the first production line of black silicon was put into production, marking the beginning of mass production and launch of GCL-Poly polycrystalline black silicon wafers. The commissioning of the Yangzhou GCL solar black silicon wafer production line means that the diamond-cut polycrystalline matching black silicon technology has been fully mature, and the polycrystalline products have entered the “black silicon eraâ€.
After the production line was running smoothly, in order to meet the needs of expanding production capacity, Yangzhou GCL built a large “black silicon plantâ€. After more than half a year of hard work, the black silicon plant was officially opened, which means that the 2GW black silicon project has taken another solid step toward success.
“There are more than 20 production lines in total, which will be fully installed by the end of the month and will be put into production. In the future, it will be the largest wet black silicon wafer production base in China and even in the world.†Yangzhou GCL related person in charge said this.
Pulling down the cost of polycrystalline silicon is called black silicon of solar photovoltaic "black technology". What is it? In general, black silicon technology is to etch the surface of the cell to form a pyramid, which reduces the reflectivity, which is why black silicon cells look blacker than ordinary cells.
“With black silicon technology, the surface reflectance of the battery will be greatly reduced, thus effectively improving the efficiency of the battery. Compared with the conventional texturing process, the efficiency of the battery using black silicon velvet is improved by 0.3 to 0.6.†Yangzhou GCL Solar is responsible for the battery. People say.
In addition, Yangzhou's black silicon production line uses wet black silicon technology. Compared with dry black silicon technology, wet black silicon technology is more advanced, new cost is relatively small, and 0.3%-0.5% efficiency can be achieved. Upgrade.
At present, GCL-Poly supplies nearly one-third of the world's silicon wafer market with nearly 20 GW of production, so the large-scale mass production of black silicon wafers will further reduce the manufacturing cost of high-efficiency polycrystalline silicon wafers and improve conversion efficiency for the entire solar energy. The photovoltaic industry will have a big impact.
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