What are Non-Crystalline Semiconductors

摘要: We are presently participating in the development of a fascinating new field solid-state physics. Although glasses have been known for over 10,000 years and during course day you likely to encounter more noncrystalline than crystalline solids, there is hardly textbook which mentions glassy or amorphous materials. The beginning our difficult pin down. In 1950’s KOLOMIETS [1] showed that chalcogenide behaved like intrinsic semiconductors their electrical conductivity could not be increased by adding dopants. 1957 SPEAR [2] reported first drift mobility measurements vitreous Se TAUC [3] studies on Ge early 1960’s. Many scientists were drawn through work OVSHINSKY [4]: discovery switching memory effects glasses. These as well optical effects, imaging, photodoping, reversible photostructural changes suggested possibilities applications semiconductors. phenomena demonstrated was large material science virtually unexplored.