Where does high purity silicon come from?

Where does high purity silicon come from?

High purity silicon is crucial for various applications, particularly in the semiconductor industry. But where does it originate? The purity of silicon typically comes from natural sources, primarily silica, which is abundant in the Earth's crust.

Extraction and Refinement Processes

The journey to obtain high purity silicon involves several extraction and refinement processes. Initially, natural silica is extracted, followed by various purification techniques to achieve the desired purity levels.

The Role of Silicon Compounds

Silicon compounds play a significant role in the extraction of high purity silicon. Specific compounds, such as trichlorosilane, are commonly used because they allow for more manageable purification processes.

Industrial Production Techniques

Modern industrial methods, such as the Siemens process, utilize chemical reactions to produce high purity silicon. Through thermal decomposition of silicon compounds, this method yields silicon with impurity levels significantly below one part per billion.

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The manufacturing of high purity silicon is continuously evolving, and further research into efficient production methods is essential. For more insights, you may want to check this Which annealing machine do you recommend?