At present, the domestic annual demand for polysilicon is more than 654.38+10,000 tons. With China becoming the main producer and market of electronic information products in the world, the demand for polysilicon will further increase. To this end, the state has specially listed polysilicon materials in the industries and products that currently focus on encouraging development and foreign investment, and fully supported the development of silicon materials industry. Although China's polysilicon industry started not late, it developed slowly. The production and technology are backward, the equipment is outdated, the production scale is small, the material and energy consumption are high, the product cost is high, and the quality is difficult to guarantee, which is far from the international level. In addition, the power consumption and material consumption of production are generally higher than international standards, which makes the polysilicon manufacturers in China lose their international competitiveness. The number of domestic polysilicon manufacturers is decreasing. At present, only Sichuan Emei semiconductor material factory and Luoyang monocrystalline silicon factory can produce polycrystalline silicon, Czochralski monocrystalline silicon and small diameter zone melting monocrystalline silicon. The output of polysilicon in China is still far from meeting the domestic demand. With the rapid development of the chip industry, the gap will become larger and larger. In order to meet the demand of polysilicon market at home and abroad and adapt to the development of chip industry, it has become an urgent task for the development of domestic integrated circuit industry to introduce world-class technology and develop China's polysilicon industry. In recent years, the output of monocrystalline silicon in China has increased steadily. On the one hand, the increase is due to the increase in international demand for low-grade and cheap silicon materials; On the other hand, in recent years, China has developed rapidly in all aspects, and there is a strong demand for all kinds of information appliances and communication products, so there is a great market demand for semiconductor devices and silicon materials. There are more than 40 enterprises engaged in semiconductor silicon production in China. 1999, the sales of only one enterprise reached 1 100 million yuan. By 2004, there were seven enterprises with sales exceeding 100 million yuan, namely Hebei Ningjin Single Crystal Base, Shanghai Shenhe Thermomagnetic Company, Youyan Semiconductor Material Co., Ltd., Luoyang Single Crystal Co., Ltd., Wuxi Huarun Huajing Microelectronics Co., Ltd., Ningbo Lili Electronics Co., Ltd., Shanghai Hejing Silicon Material Co., Ltd. and Haina Semiconductor Company. Judging from the products produced by enterprises, at present, domestic enterprises mainly produce 4-6 inch silicon wafers, but they cannot supply polished positive silicon films above 8 inches in batches. At present, the leading domestic polysilicon enterprises are Sichuan Emei Semiconductor Material Factory and Luoyang Monocrystalline Silicon Factory, and Sichuan Province has invested11920,000 yuan to introduce and absorb Russian polysilicon technology on the basis of Emei Semiconductor Material Factory. A polysilicon production line with an annual output of 1 1,000 tons has been built to meet the market demand. The current output has reached 300 tons. The first furnace product of the 300-ton polysilicon project of Zhongsi Hi-Tech in Luoyang Monocrystalline Silicon Factory was successfully released recently. The leading monocrystalline silicon enterprise is Luoyang monocrystalline silicon factory. According to a preliminary estimate, at present, more than 70% of the domestic output is used to manufacture discrete devices or silicon photovoltaic cells, and only about 30% of the high-grade Czochralski monocrystalline silicon polishing wafers are actually used to manufacture integrated circuits (ic). Moreover, it is difficult for Chinese-made silicon polishing wafers to enter the international market and domestic joint ventures in batches. Only Luoyang Monocrystalline Silicon Factory MCL can enter South Korea, Singapore, Hong Kong and other Southeast Asian markets.
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