Silicon Wafers for Energy Research

Silicon Wafers

We offer a wide range of silicon wafers, produced to exact customer requirements or as standard wafer specifications available from stock.

If you can't find what you are looking for from our stocked range, please contact us on +44 (0) 1827 259250 or us our 'Request Quote' button above.

Below are our most requested lines, however we welcome any enquiry for other specifications:

Prime

Test

Reclaim

Mechanical

Size	Standard Thickness (µm)	Tolerance (+/- µm)
1” (25.4mm)	250	15
2” (50.8mm)	275	25
3” (76.2mm)	380	25
4” (100mm)	525	20
5” (125mm)	625	20
6” (150mm)	675	20
8” (200mm)	725	25
Specialist thin wafers available: 1” down to 10 µm thick / 4” down to 90 µm thick / 6” down to 150µm thick
Custom thicknesses available on request

Type	Dopant
Intrinsic	-
n-type	P- Phosphorous, Sb - Antimony, As - Arsenic
p-type	B - Boron
Heavy P or B doping is also available

Orientation	Tolerance
<100>	Standard +/- 0.5º & Custom up to +/- 0.05º
<110>
<111>
Custom Orientations & Off Orientations (up to 40º) available on request

As cut

Lapped

Etched

Single Side Polished

Double Side Polished

On polished surface: Roughness <2Å / Total Thickness Variation (TTV) <1µm

Laser marking available on request

Type	Specifications
Windows	As per customer drawings
Components	As per customer drawings
Blocks	To customer specification including surface roughness & flatness
We can also supply Germanium single crystal components

	Specifications
Diameter	4” Standard or other sizes available upon request
Layers	Thermal SiO₂, TiO₂or Ti Adhesion, Platinum E-Beam

	Specifications
Size	As per customer specification
Layers	Handle, Device, Buried Oxide (BOX) - All layers as per customer specification

SERVICES

Type	Method	Thickness (nm)	Diameter
SiO₂ Silicon Dioxide	Wet Oxidation	200-3000	From 1” to 6”
SiO₂ Silicon Dioxide	High Purity Dry Oxidation	20-300	From 1” to 6”
Single face oxidation also available
Si₃N₄ Silicon Nitride	LPCVD or PECVD	20-500	From 2” to 6”
Metal Coatings including: Cr, Ti, Au, Al, Pt, Mo, W, Ni, Cu, Ir, Ta	PVD Sputtering or Evaporation	20-1000	From 1’’ to 6’’ (depending on metals)
Other metal coatings & multi-layer deposition available on request

Form	Specifications
Tiles	E.g. 10mm x 10mm, 20mm x 20mm (minimum size 1.5mm x 1.5mm)