Скачать или смотреть How Is Crystalline Silicon Made? - Chemistry For Everyone

How Is Crystalline Silicon Made? In this informative video, we will take you through the fascinating process of creating crystalline silicon, a key material used in electronics and solar cells. The journey begins with metallurgical-grade silicon, which is extracted from silica sand and requires purification to meet the high standards needed for technological applications. We will explain the chemical reactions involved in this purification process, including the treatment with hydrogen chloride gas and the subsequent fractional distillation that achieves remarkable purity levels.

Next, we’ll dive into the Siemens process, where trichlorosilane is transformed into polycrystalline silicon rods through chemical vapor deposition. Following this, we’ll discuss the crystal growth phase using the Czochralski process, where a single-crystal silicon seed is pulled through molten silicon to create large silicon ingots. We will also cover the slicing and polishing of these ingots into wafers ready for use in semiconductor devices and solar panels.

Join us as we unravel the steps involved in producing high-purity, single-crystal silicon and highlight the differences between crystalline and amorphous silicon. Subscribe to our channel for more engaging content on chemistry and materials science.

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