floatzoneprosesser

The term "floatzoneprosesser" appears to be a misspelling or a non-standard term. Based on common English terminology in scientific and industrial contexts, it is likely referring to "float zone processing" or "float zone method."

Float zone processing is a method used to produce extremely pure semiconductor crystals, particularly silicon. It is a crucible-less technique that involves melting a small region of a polycrystalline rod. This molten zone is then slowly moved along the length of the rod. Impurities tend to be less soluble in the molten phase than in the solid phase, so as the molten zone moves, it sweeps the impurities away from the crystal. The purified molten zone then solidifies behind the moving zone, forming a highly pure single crystal.

This method is advantageous because it avoids contamination from crucible materials, which is a significant issue in other crystal growth techniques like the Czochralski method. Float zone processing is often used for applications requiring the highest purity silicon, such as in high-performance transistors and solar cells. The process typically requires careful control of temperature gradients, rotation rates, and the speed at which the molten zone traverses the rod to ensure the growth of a high-quality single crystal with minimal defects and uniform impurity distribution.