Elemental silicon with low purity can be made by reducing silicon dioxide with metallic magnesium or aluminum, but this is amorphous silicon. Crystalline silicon is made by reducing silicon dioxide with carbon in an electric arc furnace, which can be used to produce silicon steel sheets. The method for preparing ultra-pure silicon used as a semiconductor is to first use a mixture of low-purity silicon, hydrogen chloride and chlorine to prepare trichlorosilane, and then purify it by distillation. Then the trichlorosilane is reduced with pure hydrogen in the reduction furnace, and the silicon is deposited on a fine core made of ultrapure silicon. The ultrapure silicon obtained in this way is called polysilicon, and it is placed in a single crystal furnace. It can be drawn into single crystal silicon, which can be used as a semiconductor material. It has abundant sources and low price. Most of the semiconductor materials use silicon.

Monocrystalline silicon is widely used in solar cells. High-purity single crystal silicon is an important semiconductor material. With the rapid development of photovoltaic technology and micro-semiconductor inverter technology, solar cells produced by using silicon single crystals can directly convert solar energy into light energy. The beginning of the green energy revolution. Features of monocrystalline silicon solar cells: 1. High photoelectric conversion efficiency and high reliability; 2. Advanced diffusion technology to ensure the uniformity of conversion efficiency everywhere in the chip; 3. Use advanced PECVD film forming technology on the surface of the cell Plated with dark blue silicon nitride anti-reflection film, the color is uniform and beautiful; 4. Use high-quality metal paste to make the back field and electrode to ensure good conductivity.

Monocrystalline silicon is a high-quality raw material in space