Germanium
Ge
Germanium
Data Sheet
Physical Properties
- Melting point: 938.25°C
- Density: 5.327 g/cm³
- Thermal Conductivity: 400 W/m·K
- Electrical Resistivity: 1.68 µΩ·cm at 20°C
Chemical Properties
- Atomic Number: 32
- Atomic Weight: 72.63 u
- Crystal Structure: Diamond Cubic
Applications
- Electronics: Used in semiconductor devices, interconnects, and bonding wires due to its excellent conductivity and thermal properties.
- Optics: Applied in reflective coatings and optical devices.
- Photovoltaics: Utilized in thin-film solar cells to improve efficiency and reduce manufacturing costs.
- Thermal Management: Applied in electronic devices to dissipate heat efficiently.
- Microelectronics: Employed in the fabrication of integrated circuits and transistors.
- Protective Coatings: Provides corrosion resistance and wear protection.
- Aerospace: Reflective Coatings
Forms
Sputtering Targets
(any dimension)
Diameter, Rectangular, Delta & Rotatable configurations
Germanium sputtering target for 200mm PVD system
Evaporation Material
(any dimension)
Pellets or Starter Sources
Germanium Cubes .250” x .250”
Purity Guide
| Purity | Level | Metallic Impurities Allowed (PPM) |
| (2N) 99% | 99% | 10,000 |
| (2N5) | 99.5% | 5,000 |
| (3N) | 99.9% | 1,000 |
| (3N5) | 99.95% | 500 |
| (4N) | 99.99% | 100 |
| (4N5) | 99.995% | 50 |
| (5N) | 99.999% | 10 |
| (5N5) | 99.9995% | 5 |
| (6N) | 99.9999% | 1 |
Example of an Actual Certificate of Analysis
| Element | PPM Level | Element | PPM Level |
| Al | 0.03 | Ca | 0.03 |
| Cu | 0.01 | Fe | 0.05 |
| Mg | 0.3 | Na | 0.2 |