What are the uses of mercury telluride?

Mercury telluride, whose chemical formula is HgTe, is a binary inorganic compound composed of telluride and mercury, and it is black crystal at room temperature.

Mercury telluride physicochemical properties

Molecular formula: HgTe

Molecular weight: 329.19800

Exact mass: 332.88500

Melting point: 673 ℃

Density: 8.63

Appearance: Powder

Color :Gray to black

Water solubility: keep it Insoluble in water.

Crystal Structure :Cubic, Sphalerite Structure-space Group

Storage conditions: closed at room temperature, cool, ventilated and dry stability: stable to avoid material oxide at room temperature and pressure

Telluride mercury toxicity and ecological toxicology data

Mercury telluride powder main stimulatory effects:

On the skin: irritates the skin and mucous membranes

Above the eyes: the effect of irritation

Sensitization: There is no known sensitization

Mercury telluride ecological data:

Often extremely harmful to water bodies, even small amounts of the product should not come into contact with groundwater, waterways or sewage systems.

Preparation of mercury telluride powder

Mercury telluride was prepared by zone melting and Bridgman method. According to the stoichiometric ratio, Hg and Te were placed in a closed high-pressure vessel and heated to react. Then the products were sublimated and purified in pure N2 air stream to obtain pure HgTe products.

Mercury telluride application

Mercury telluride (HgTe) crystal material has a broad application prospect in the field of large array infrared detector due to its excellent photoelectric properties.

The eutectic structural compounds of mercury telluride, cadmium telluride and indium antimonide and their single crystal materials and thin film materials relate to a new class of infrared materials. The compounds were prepared with HgTe,CdTe and InSb as raw materials by solid phase method at high temperature in vacuum. The single crystal growth temperature is 700 ~ 850℃, and the controlled crucible decline rate is 5 ~ 30mm/h. The thin film material was prepared by molecular beam epitaxy. This kind of material is a new type of infrared material with adjustable band gap in a wide range, relatively stable structure, uniform composition, relatively simple preparation process, low mercury content and response wavelength in the middle and long band, and its performance is comparable to MCT infrared semiconductor materials.

The ease of chemical synthesis and processing of HgTe QDS, as well as the scalability of direct laser fabrication of nanoantennas with customized isoplasmon responses, represent an important step toward the design of infrared range devices for a variety of applications. The combination of QDS with nanoplasmon substrates improves infrared performance. And overcome the basic physical limitations imposed on QDS during isolated operation.