Tags: Chemical Compound, Chemical Substance.
Germanium selenide is a chemical compound with the formula GeSe. It exists as black crystalline powder having orthorhombic (distorted NaCl-type) crystal symmetry; at temperatures ~650 °C it transforms into the cubic NaCl structure.To grow GeSe crystals GeSe powder is vaporized at the hot end of a sealed ampule and allowed to condense at the cold end. Usual crystals are small and show signs of irregular growth caused mainly by convective motion in the gaseous medium.
