Aug 21 2013
Topics Covered
Description
Applications
Chemical Properties
Electrical Properties
Thermal and Mechanical Properties
Safety Information
Description
Gallium selenide is a chemical compound having a hexagonal layer structure similar to that of gallium sulfide. It readily reacts with acids. Gallium selenide crystals are widely being used in photoconductor and non-linear optical material. Doping of these crystals with indium in turn greatly enhances their structural strength.
Applications
Gallium selenide finds applications in the following:
-
Optical applications
-
Photovoltaic cells.
Chemical Properties
The chemical properties of gallium selenide are provided in the table below:
|
Chemical Properties |
|
Chemical Formula |
GaSe |
|
Molecular Weight |
148.69 |
|
CAS No. |
12024-11-2 |
|
Group |
Gallium – 13
Selenium - 16 |
|
Crystal Structure |
Cubic |
|
Symmetry Group |
P63/mmc |
|
Lattice Constant |
5.429 Å |
Electrical Properties
The electrical properties of gallium selenide are provided in the table below:
|
Electrical Properties |
|
Band Gap |
2.1 eV |
Thermal and Mechanical Properties
The thermal and mechanical properties of gallium selenide are provided in the tables below:
|
Thermal Properties |
|
Thermal Expansion Coefficient |
8.9 µm/m°C |
|
Thermal Conductivity |
5 W/mK |
|
Mechanical Properties |
|
Density |
4.92 g/cm3 |
|
Melting Point |
747°C |
|
Knoop Microhardness |
3160 |
Safety Information
|
Safety Information |
|
GHS Hazard Statements |
R23/25 - Toxic by inhalation and if swallowed.
R33 - Danger of cumulative effects. |
|
Safety Precautions |
S20/21 - When using, do not eat, drink or smoke.
S28 - After contact with skin, wash immediately with plenty of water
S45 - In case of accident or if you feel unwell, seek medical advice immediately. |