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Low-stress silicon nitride LPCVD (<50 MPa): View
Process Hierarchy
Bonding
Clean
Consulting
Deposition
   Evaporation
   LPCVD
   Low-stress SiN deposition
   Miscellaneous deposition
   Oxidation
   PECVD
   Spin casting
   Sputtering
Doping
Etch
LIGA
Lift off
Lithography
Mask making
Metrology
Miscellaneous
Packaging
Polishing
Process technologies
Thermal
Unique capabilities

If you are interested in this process, either by itself or as part of a longer processing sequence, please send us email at engineering@mems-exchange.org or call us at (703) 262-5368

Low-stress silicon nitride LPCVD (<50 MPa)
Process characteristics:
Thickness
Amount of material added to a wafer
Thickness*
Amount of material added to a wafer, must be 0 .. 2 µm
0 .. 2 µm
Batch sizes 100 mm: 24
Deposition rate
Rate at which material is added to a wafer
40 Å/min
Excluded materials gold
Material silicon nitride
Measured film thickness variation (+/- %) 14.9
Refractive index 2.1 .. 2.3
Residual stress 0 .. 50 MPa
Setup time 60 min
Sides processed both
Temperature 835 °C
Wafer size
Wafer size
Equipment Tylan/Tystar Furnaces (low-stress silicon nitride tube)
Equipment characteristics:
Wafer geometry
Types of wafers this equipment can accept
1-flat, 2-flat
Wafer holder
Device that holds the wafers during processing.
quartz boat
Wafer materials
List of wafer materials this tool can accept (not list of all materials, just the wafer itself).
silicon
Wafer thickness
List or range of wafer thicknesses the tool can accept
300 .. 600 µm
Comments:
  • DCS/NH3 ratio is X:1.
  • This recipe is available for 4" wafers only.