Germanium telluride
Germanium telluride (CAS: 12025-39-7), with the linear formula GeTe, is a notable semiconductor and chalcogenide material with a molecular weight of 200.24 g/mol. It is highly regarded for its properties in thermoelectric applications and as a phase-change material. This compound plays a crucial role in the development of advanced electronic and optical non-volatile memory devices and is investigated for energy conversion technologies.
- IUPAC
- Germanium monotelluride,Germanium(II) telluride,Germanous telluride
- Synonyms
- Germanium monotellurideGermanium(II) tellurideGermanous telluride

Thermoelectric Materials
Germanium telluride is recognised for its potential in thermoelectric applications. Its performance can be further improved through nanostructuring, controlled defects, and doping or alloying with other elements.
Phase Change Memories
As a prototypical phase change material, GeTe is fundamental in the design of optical and electronic non-volatile memory devices. Its reversible switching characteristics are key to these applications.
Semiconductor Research
GeTe serves as an important semiconductor material in research and development. Its unique electronic properties make it a subject of study for novel electronic device architectures.
| Molecular weight | 200.24 |
|---|---|
| Linear formula | GeTe |
| Assay | 99.999% trace metals basis |
| Density | 6.14 g/mL at 25 °C(lit.) |
| Application | 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. |
| Melting point | 725 °C(lit.) |
Documentation
Every batch ships with a Certificate of Analysis covering assay, identity and purity; the grade is confirmed against your enquiry. Safety Data Sheets and technical data sheets are available on request.
Supply & logistics
Samples for technical evaluation; bulk MOQ by grade and packaging. In-stock material ships in 7–10 working days, worldwide, with full export documentation.
What is Germanium telluride used for?
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Germanium telluride (GeTe) is primarily used in thermoelectric applications and as a phase-change material for optical and electronic non-volatile memories.
What is the CAS number and formula for Germanium telluride?
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The CAS number for Germanium telluride is 12025-39-7 and its linear formula is GeTe.
What grade and purity does Tech Serve Solutions supply?
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Tech Serve Solutions supplies Germanium telluride with an assay of 99.999% trace metals basis. We do not represent this product as USP, BP, EP, or other pharmacopoeia grades.
What are the safety and handling considerations for Germanium telluride?
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Germanium telluride is classified under WGK 2 in Germany, indicating it is hazardous to water. Always consult the Safety Data Sheet (SDS) before handling and use appropriate personal protective equipment.
How is Germanium telluride shipped and exported?
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Tech Serve Solutions, a global supplier since 1998, professionally packs and exports chemicals worldwide. Please contact us for specific shipping and export details to your region.
How can I request a sample or quote for Germanium telluride?
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To request a sample or obtain a quotation for Germanium telluride, please contact our sales team directly via phone or email through the 'Contact Us' section of our website.
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