Zinc telluride Crystal
Nov 21,2023
The crystals grown by the vapor method show several absorption lines in 2.2–2.35 eV, which originate from the complex and consist of exciton and impurities.
Crystal System
The space lattice of ZnTe belongs to the cubic system, and its zinc-blend type structure has a lattice constant of a=0.609 nm and its nearest neighbor has an atomic distance of 0.264 nm.
Production
A single crystal is grown by slowly pulling down a quartz ampoule with a carbon coated inner wall and encapsulating it with ZnTe in a Stockbarger furnace with a temperature difference of 508C– 608C between the upper and lower furnaces. The p-type samples are usually obtained and the n-type samples are obtained in the Zn atmosphere. A single crystal can also be grown by slowly moving a silica boat contained with ZnTe and a small amount of Zn through a horizontal three-zone furnace with a central zone at a higher temperature than the melting point.
The crystals obtained from this procedure can be polished with Linde B powders using water or dilute nitric acid.
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