Germanium (Ge) Substrates
We have both electrical grade and optical grade germanium 
wafers in stock. Sizes range from < 10mm square to 150mm.
Get your Germanium Wafer Quote Fast! Or, Buy Online and start researching today!
Usefull Germanium Substrate Specs Vs Silicon and Other Materials
Germanium is a high-mobility material that competes with Silicon (Si), Gallium Arsenide (GaAs), and Indium Arsenide (InAs) for making CMOS devices.
Germanium Bandgap
0.66
Germanium Electron mobility at 300 kelvins
3,900
Germanium Hole mobility at 300 K
1,900
Germanium Maximum Possible Electron Velocity
0.6
Germanium Critical Electric Field
0.1
Germanium Substrates in Stock
Below are just some of the germanium wafers that we have in stock. If you don't see what you need please email use your spec for pricing and delivery.
| Item | Dia (mm) | Typ/Dop | Ori | Res ohm-cm | Thk (μm) | Pol |
| 2477 | 50.8 | N/Sb | (100) | 0.01-0.02 | 500 | SSP |
| 2478 | 50.8 | Undoped | (100) | >50 | 500 | SSP |
| 2479 | 50.8 | Undoped | (100) | >50 | 500 | DSP |
| 2480 | 50.8 | N/Sb | (110) | 0.35-0.4 | 500 | SSP |
| 2481 | 50.8 | Undoped | (111) | >50 | 500 | SSP |
| 2482 | 50.8 | P/Ga | (100) | 1-10 | 500 | SSP |
| 2575 | 50.8 | P/B | (100) | 0.01-0.1 | 500 | SSP |
| 1927 | 100mm | P/Ga | <100> 6° towards <111> ± 0.5° | 0.01-0.05 | 175 | SSP |
| 1928 | 150mm | P/Ga | <100> 6° towards <111> ± 0.5° Epi ready | 0.008-0.05 | 225 | SSP |
What is The Thermal Conductivity of Germanium vs Other Substrates?
0.58
Below is the comparison between Germanium and competing materials.
To make germanium—or any alternative channel material—work in
| Property | Silicon (Si) | Germanium (Ge) | Gallium arsenide (GaAs) | Indium arsenide (InAs) | Unit |
| Bandgap | 1.12 | 0.66 | 1.42 | 0.35 | eV |
| Electron mobility at 300 kelvins | 1,350 | 3,900 | 8,500 | 40,000 | cm2/(V·s) |
| Hole mobility at 300 K | 450 | 1,900 | 400 | 500 | cm2/(V·s) |
| Maximum possible electron velocity | 1 | 0.6 | 2 | 3.5 | x107 cm/s |
| Critical electric field | 0.25 | 0.1 | 0.004 | 0.002 | x106 V/cm |
| Thermal conductivity | 1.5 | 0.58 | 0.5 | 0.27 | W/(cm·K) |