Cadmium arsenide

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Cadmium arsenide
Other names	Cadmium diarsenide
Identifiers
CAS number	[12006-15-4]
EINECS number	234-484-1
Properties
Molecular formula	Cd3As2
Molar mass	?
Appearance	solid, dark grey
Density	3.031
Solubility in water	decomposes in water
Hazards
NFPA 704	1 4 0 W
U.S. Permissible exposure limit (PEL)	5 micrograms (Cd)/m3
LD50	no data
Except where noted otherwise, data are given for materials in their standard state (at 25 °C, 100 kPa) Infobox disclaimer and references

Cadmium arsenide (Cd₃As₂) is a crystalline semiconductor with a tetragonal structure in the II-V family. It is a narrow gap semiconductor with an energy gap of 0.14 eV. The electron mobility is very large at ambient temperature. It is a n-type intrinsic semiconductor.

Cadmium arsenide can be prepared as amorphous semiconductive glass.

Cadmium arsenide shows Nernst effect.

Cadmium arsenide is used in infrared detectors using Nernst effect, and in thin-film dynamic pressure sensors. It can be also used to make magnetoresistors, and in photodetectors. [1]

Cadmium arsenide can be used as a dopant for HgCdTe.

[edit] External links

• National Pollutant Inventory - Cadmium and compounds