Nano-Tec Gold Coated Silicon Wafers

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rs mn 10 AU8120


Rave Scientific offers the Nano-Tec gold coated silicon wafers which are useful for thin film research, AFM / SPM, nanotechnology and biotechnology applications. The silicon wafers are coated with 50nm of pure gold over a 5nm adhesion layer of Cr. Both Cr and Au are deposited in a dedicated high vacuum deposition system with electron beam evaporation sources. The gold coating is not atomically flat; there are height differences in the nm range. The maximum use temperature is around 175°C; higher temperatures could result in delamination of the gold film. Available in two sizes: Ø2”/51mm and Ø4”/100mm. The Nano-Tec gold coated wafers are individually packed in wafer carrier trays for protection.


Specifications of the Nano-Tec  gold coated Ø2”/51mm silicon wafers:

Coating film : 50nm Au, 99.999% purity  
Adhesion film  : 5nm Cr, 99.98% purity  
Surface roughness : several nm  
Si substrate Orientation :  
             Type   : P (Boron) with one primary flat  
             Resisantance : 1-30 Ohm/cm  
             Diameter : Ø51mm Ø100mm
            Thickness : 275µm (+/- 20µm) 525µm (+/- 20µm)
             TTV  : =< 20µm =< 20µm
             Primary Flat : 15.9 +/- 1.65mm 32.5 +/- 2.5mm