Zinc Arsenide (Zn3As2) Semiconductors


Zinc arsenide is a binary compound of zinc and arsenic, which forms gray tetragonal crystals. It is stable at normal temperatures and pressure.


Zinc arsenide finds applications in the following:

  • Photo optic applications
  • Dopants

Chemical Properties

The chemical properties of zinc arsenide are provided in the table below:

Chemical Properties
Chemical Formula Zn3As2
Molecular Weight 346
CAS No. 12006-40-5
Group Zinc - 12
Arsenic - 15

Electrical Properties

The electrical properties of zinc arsenide are provided in the table below:

Electrical Properties
Intrinsic Carrier Concentration 2x1014 cm-3
Electrical Resistivity 10 – 105 Ω cm
Hole Mobility 4 cm2/Vs

Thermal and Mechanical Properties

The thermal and mechanical properties of zinc arsenide are provided in the tables below:

Thermal Properties
Thermal Conductivity 2.44 x 103 W/mK
Mechanical Properties
Density 5.53 g/cm3
Melting Point 1015°C
Specific Gravity 5.528

Safety Information

Safety Information
GHS Hazard Statements H301 - Harmful if swallowed
H331 - Harmful if inhaled
H410 - Toxic to aquatic life.
Safety Precautions P261 - Avoid breathing dust/ fume/ gas/ mist/ vapors/ spray
P273 - Avoid release to the environment
P301 + P310 - If swallowed: Immediately call a POISON CENTER or doctor
P311 - Call a poison center or doctor/ physician
P501 - Dispose of contents/ container to an approved waste disposal plant.


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