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Copper(I) Telluride | Cu2Te | CAS 12019-52-2


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Copper (I) Telluride (Cu2Te) is a direct bandgap semiconductor with an energy gap usually ranging from 0.8 to 1.15eV, and it has a tunable band structure. Heeger Materials can provide the best Copper(I) Telluride (Cu2Te) with a purity of 99.99% and  99.999% in the size of lump, granule, and powder at a competitive price. The size can be tailored according to specific requirements.

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Data sheet

Molecular Weight254.692
Purity99.99%-99.999% (4N-5N)
Sizelump, granule, powder
ProductCopper (I) Telluride

More info

Copper (I) Telluride (Cu2Te) is an alloy of copper and tellurium. Tellurium improves the machinability of copper. Its crystal structure belongs to an unconventional zinc-blende structure, in which each copper atom is surrounded by four tellurium atoms to form a tetrahedral structure. This structure gives copper(I) telluride some special characteristics in optical, electrical, and thermal properties. At low temperatures, it can show ferromagnetic or antiferromagnetic behavior, which makes it also have certain application prospects in spintronics and magnetic storage fields.

Heeger Materials offers a selection of over 100 high-purity products, including metals, metal oxides, and metal salts, with 99.999% purity or higher.

Copper (I) Telluride | Cu2Te | CAS 12019-52-2

  • Compound Formula: Cu2Te
  • Molecular Weight: 254.69
  • Appearance: Bluish-black pieces, powder, or chunks
  • Density: 7.27 g/cm3
  • Melting point: 900 ℃
  • Solubility: Insoluble in water, hydrochloric acid, and sulfuric acid, but soluble in bromine water. 


  • Used for photovoltaic solar cells due to its tunable bandgap and excellent light absorption capabilities.
  • Used as a photosensitive material in the development of optoelectronic sensors.
  • Used for developing light-emitting devices, such as LEDs.
  • Used in magnetic storage devices.
  • Used as a thermoelectric material in power generation and waste heat recovery.


Copper (I) Telluride (Cu2Te) 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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