Question

A method used to produce high quality semiconductor grade material?

• A. Floating zone refining
• B. Laser ablation
• C. Vacuum arc melting
• D. Vacuum induction melting

Hint:

Floating zone refining is widely used in the production of high-purity semiconductor materials. It allows for precise control of impurities and produces high-quality, defect-free crystals.

Answer 1

The Correct Option is A

Floating zone refining is a highly effective method for producing high-quality semiconductor-grade materials, especially for materials like silicon, which are used in semiconductor applications. In this process, a rod of the material to be refined is passed through a high-temperature zone (often generated by a moving heater), where a small portion of the rod is melted. The molten zone moves along the length of the rod, effectively purifying the material as it solidifies. This method is particularly useful for producing high-purity crystals without introducing contaminants from crucibles.
Unlike other methods such as vacuum arc melting or laser ablation, floating zone refining is specifically used for the production of semiconductor-grade materials due to its ability to control impurity levels and produce single crystals of high quality.
Hence, the correct answer is: Floating zone refining.