Zone melting is used to obtain extremely pure and uniform crystals of these substances.
Zone melting is used to obtain extremely pure and uniform crystals of these substances. These materials can be produced by lowering a thin rod-shaped seed crystal into a melt contained within a crucible then slowly pulling out the resulting boule. When two specific types of these materials are placed adjacent to each other, the result is two "quasi-neutral" regions and one "space charge" region which is often approximated as being (*) "depleted" of charge carriers. PÂ–n junctions are made using these materials, which possess a Fermi level that lies within the small band gap located between their valence and conduction bands. For 10 points, germanium and silicon are examples of what kind of material intermediate between insulators and conductors in conductivity?
Zone melting is used to obtain extremely pure and uniform crystals of these substances.
semiconductors [accept "silicon wafers" before mention] 