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Germanium (II) Sulfide | GeS |CAS 12025-32-0


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Germanium (II) Sulfide is a semiconductor with an indirect bandgap of 1.6 eV. Heeger Materials can provide the best Germanium (II) Sulfide with a purity of 99.99% and 99.999% in the size of lump and powder. The size can be tailored according to specific requirements. 

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Data sheet

Purity99.99%-99.999% (4N-5N)
ProductGermanium(II) sulfide

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Germanium monosulfide or Germanium(II) sulfide is a chemical compound with the formula GeS. It is a chalcogenide glass and a semiconductor. Its layers are stacked together by van der Waals force interactions and can be mechanically exfoliated into a two-dimensional monolayer.

Germanium (II) Sulfide | GeS |CAS 12025-32-0

High-purity and ultra-high-purity Germanium (II) Sulfide materials are crucial components for the research, development, and production of advanced technologies that require optimum properties, performance, and quality.

  • Chemical formula: GeS
  • EINECS No.: 234-704-6


  • Germanium (II) Sulfide | GeS Granules
  • Germanium (II) Sulfide | GeS Powder
  • Germanium (II) Sulfide | GeS Sputtering Target


  • Used for optoelectronic devices such as photodetectors and sensors.
  • Used as a potential absorber material in thin-film solar cells.
  • Used in waste heat recovery and solid-state cooling.
  • Used as anode materials in lithium-ion batteries.
  • Used as a catalyst in various chemical reactions.
  • Used as an additive in lubricants and for the development of wear-resistant coatings.


Germanium (II) Sulfide (GeS) is carefully packaged in carton boxes with foam protection to minimize damage during storage and transportation and to preserve the quality of our products in their original condition. The vacuum packing is 1kg/bag, 25kg/barrel, or based on specific requirements.

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