Cadmium telluride
MATERIAL OVERVIEW
Characteristics: Cadmium telluride is a crystalline compound formed from cadmium and tellurium. It is sandwiched with calcium sulfide to form a p-n junction photovoltaic solar cell. It has very low solubility in water, and is etched by many acids such as hydrobromic and hydrochloric acids. It is commercially available as powder or crystals. It can also be made into nanocrystals..
Application: Tellurium dioxide could be used in different fields, according to its purity and form
Thin film solar cells
Infrared optics
Detectors
Electro-optic modulators
Crystal pieces for vacuum deposition
Cadmium telluride products from Wuhan Xinrong
| Material name | Purity | size |
| Cadmium telluride | 4N-7N |
Cadmium telluride shape and purity could be customized by customer request
Packing: After being packed in polyester films, then packed in plastic films or glass tubes in vacuum.
GENERAL PROPERTIE
| Chemical Properties | |
| Chemical Formula | CdTe |
| Molecular Weight | 240.01 |
| CAS No. | 1306-25-8 |
| Group | Cadmium - 12 Tellurium - 16 |
| Crystal Structure | Cubic |
| Lattice Constant | 6.482 Å |
Electrical Properties
The electrical properties of cadmium telluride are provided in the table below:
| Electrical Properties | |
| Dielectric Constant | 10.2 |
| Band Gap | 1.44 Ev |
| Hole Mobility | 65 cm2/Vs |
| Electron Mobility | 700 cm2/Vs |
Thermal, Mechanical and Optical Properties
The thermal, mechanical and optical properties of cadmium telluride are provided in the tables below:
| Thermal Properties | |
| Thermal Expansion Coefficient | 5.9´10-6/K |
| Specific Heat Capacity | 0.21 J/Gk |
| Thermal Conductivity | 0.06 W/cmK |
| Mechanical Properties | |
| Density | 5.85 g/cm3 |
| Melting Point | 1092°C |
| Boiling Point | 1130°C |
| Young's Modulus | 3.7´1011 dyne/cm2 |
| Rupture Modulus | 2.2´108 dyne/cm2 |
| Poisson Ratio | 0.41 |
| Optical Properties | |
| Refractive Index | 2.67 |
Safety Information
| Safety Information | |
| GHS Hazard Statements | Harmful if swallowed Harmful in contact with skin Harmful if inhaled Very toxic to acquatic life with long lasting effects. |
| Safety Precautions | Avoid release to the environment Wear protective gloves/ protective clothing Dispose of contents/ container to an approved waste disposal plant. |
TYPICAL ANALYSES
Impurities in ppm
| Purity/Material | Ag | Bi | Ca | Cu | Fe | In | Mg | Pb | Sb |
| 5N | The total amount is less than 10 ppm | ||||||||
| 6N | The total amount is less than 1 ppm | ||||||||
