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HomeProduct name listGermanium telluride

Germanium telluride

Synonym(s):Germanium monotelluride;Germanium(II) telluride;Germanous telluride

  • CAS NO.:12025-39-7
  • Empirical Formula: GeTe
  • Molecular Weight: 200.24
  • MDL number: MFCD00135541
  • EINECS: 234-706-7
  • SAFETY DATA SHEET (SDS)
  • Update Date: 2024-06-26 16:34:43
Germanium telluride Structural

What is Germanium telluride?

Chemical properties

Germanium telluride (GeTe) is an efficient semiconductor of germanium and tellurium and is a phase-change material. It is known to exhibit four different structural states: three at room-temperature (one amorphous and two crystalline, α and γ) and one at high temperature (crystalline, β ). It shows semimetallic conduction and ferroelectric behaviour.

The Uses of Germanium telluride

Germanium telluride (GeTe) is a promising material for thermoelectric applications. Nanostructuring; non-stoichiometric defects; doping and alloying with other materials further enhances its thermoelectric performance.
GeTe is also an important semiconductor material prototypical phase change material of high interest for applications in optical and electronic non-volatile memories.

What are the applications of Application

Germanium(II) telluride is a promising thermoelectric doping and alloying compound

What are the applications of Application

Germanium telluride is a promising thermoelectric compound with uses in doping, alloying, and nanostructuring, non-stoichiometric defects. It is also an important semiconductor that can act as a low temperature superconductor when doped. GeTe is also an important semiconductor material prototypical phase change material of high interest for applications in optical and electronic non-volatile memories.

Preparation

Germanium telluride is produced by heating Ge (less resistivity) and Te (99.998%) to their melting points in an evacuated quartz tube. single crystals can be obtained using the zone melting method.

General Description

This product has been enhanced for energy efficiency.

Properties of Germanium telluride

Melting point: 725 °C(lit.)
Density  6.14 g/mL at 25 °C(lit.)
solubility  insoluble in H2O; soluble in concentrated HNO 3
form  Powder
color  Black
Specific Gravity 6.2
Water Solubility  Insoluble in water.
Crystal Structure Cubic, Halite Structure - Space Group Fm3m
Exposure limits ACGIH: TWA 0.1 mg/m3
NIOSH: IDLH 25 mg/m3; TWA 0.1 mg/m3
CAS DataBase Reference 12025-39-7(CAS DataBase Reference)
EPA Substance Registry System Germanium telluride (GeTe) (12025-39-7)

Safety information for Germanium telluride

Signal word Warning
Pictogram(s)
ghs
Exclamation Mark
Irritant
GHS07
GHS Hazard Statements H302:Acute toxicity,oral
Precautionary Statement Codes P280:Wear protective gloves/protective clothing/eye protection/face protection.

Computed Descriptors for Germanium telluride

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