Germanium Wafers / Germanium Substrates

Material: VGF grown, monocrystalline Germanium

Application: Solar cells and sensors

Diameter: Up to 150mm
Diameter tolerance +/-0.5mm
Thickness: down to 125 micron, depending on diameter
TTV: down to 10 micron, depending on diameter
Orientation: <100> , <111> , <100> +6° towards <111>
Type: n or p doped
EPD value:
- below 500 /cm2 for 100 orientation, diameter 1 to 4 inch
- below 1000/cm2 for 111 orientation, diameter 1 to 4 inch
- below 3000/cm2 for 111 orientation, diameter 6inch
One or double side polished
Surface: Epi ready
Backside: fine ground
Laser marking: on request
Packaging: Empak Boxes under inert atmosphere, double bagged

Application: Infrared optics (IR)

Type: n-type
Orientation: <111>
Resistivity: 2 - 30 ohmcm
EPD:
- less than 2000/cm2 (typically 1500/cm2) up to 4inch diameter
- less than 5000/cm2 (typically 3000/cm2) up to 150mm diameter
All other values as above

We are able to produce on request wafers to tighter specifications.