Silver Gallium Sulfide (AgGaS2) Semiconductors

Aug 22 2013

Topics Covered

Description
Applications
Chemical Properties
Electrical Properties
Thermal, Mechanical and Optical Properties
Safety Information

Description

Silver gallium sulfide has high transparency to short wavelengths and the phase-matching and nonlinear optical properties of the material allow various frequency mixing interactions from the visible to mid-IR region. Surface absorption of silver gallium sulfide also may increase with time.

Applications

Silver gallium sulfide finds applications in the following:

  • It has been used as an efficient frequency doubling crystal for nonlinear three-wave interactions
  • Optical parametric oscillators
  • Direct infrared counter measure systems.

Chemical Properties

The chemical properties of silver gallium sulfide are provided in the table below:

Chemical Properties
Chemical Formula AgGaS2
CAS No. 7782-49-2
Group Silver – 11
Gallium – 13
Sulfur – 16
Crystal Structure Tetragonal
Lattice Constant a = 5.756 Å
c = 10.301 Å

Electrical Properties

The electrical properties of selenium are provided in the table below:

Electrical Properties
Electrical Resistance >1012 Ω cm
Dielectric Constant 10
Band Gap 1.66 eV

Thermal, Mechanical and Optical Properties

The thermal, mechanical and optical properties of silver gallium sulfide are provided in the tables below:

Thermal Properties
Thermal Expansion Coefficient 12.5 x 10-6/°C
Specific Heat Capacity 1.9 J/cm3/°C
Thermal Conductivity 0.015 W/cm/°C
Mechanical Properties
Density 4.702 g/cm3
Melting Point 997°C
Young's Modulus 38.2 GPa
Poisson's Ratio 0.29
Optical Properties
Refractive Index 2.48
Chromatic Dispersion -0.205µm-1

Safety Information

Safety Information
GHS Hazard Statements H331 - Toxic if inhaled.
H301 - Toxic if swallowed.
H373 - May cause damage to organs through prolonged or repeated exposure.
H413 - May cause long lasting harmful effects to aquatic life.
Safety Precautions P261- Avoid breathing dust, gas, fume, vapors, spray, mist.
P264 - Wash exposed skin thoroughly after handling.
P270 - Do no eat, drink or smoke when using this product.
P273 - Avoid release to the environment.

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