Part of the Oxford Instruments Group

Plasma Enhanced Chemical Vapour Deposition (PECVD)

PECVD is a well established technique for deposition of a wide variety of films. Many types of device require PECVD to create high quality passivation or high density masks.

Our PECVD systems are specifically designed to produce excellent uniformity and high rate films, with control of film properties such as refractive index, stress, electrical characteristics and wet chemical etch rate. Our plasma cleaning process with end-point control removes or reduces the need for physical/chemical chamber cleaning.

Diagram showing PECVD system technology

Key Benefits

  • Top electrode RF driven (MHz and/or kHz); no RF bias on lower (substrate) electrode 
  • Substrate sits directly on heated electrode 
  • Gas injected into process chamber via “showerhead” gas inlet in the top electrode 
  • Film stress can be controlled by high/low frequency mixing techniques 
  • Lower temperature processes compared to conventional CVD
  • Control over film stoichiometry via process conditions
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PlasmaPro 80 PlasmaPro 100 PlasmaPro 800
Electrode size 240mm 240mm 460mm
Substrates Up to 240mm diameter, multi-wafers or small pieces Up to 200mm diameter with carrier options available for multi-wafers or small pieces Up to 460mm diameter, multi-wafers or small pieces
Dopants No Various dopants available which include PH3, 3B2 H6, GeH4 No
Liquid Precursors No Yes (TEOS) No
MFC controlled gas lines 4, 8 or 12 line gas box available
RF Switching for Stress Control Yes
Wafer stage temperature range 20°C to 400°C Standard 20°C to 400°C with option for up to 1200°C Standard 20°C to 400°C
Insitu plasma clean Yes. Endpoint available to ensure optimum clean time
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  • High quality PECVD of silicon nitride and silicon dioxide for photonics, dielectric layers, passivation and many other uses
  • High quality SiOx, SiNx and SiOxNy deposition for a wide range of applications
  • Hard mask deposition and etch for high brightness LED production
  • Amorphous silicon (a-Si:H)
  • TEOS SiO2 with conformal step coverage, or void-free films and conformal step coverage
  • VCSEL manufacturing
PECVD of vertically aligned grapheneRI

PECVD of vertically aligned graphene (Courtesy of IMEC, Belgium)



PlasmaPro Systems for PECVD

PlasmaPro 80 PECVD

PlasmaPro 80 PECVD

  • Excellent wafer temperature uniformity
  • Up to 200mm wafers
  • Low cost of ownership
  • Built to Semi S2/S8 standards
PlasmaPro 800 PECVD

PlasmaPro 800 PECVD

  • High-performance processes
  • Excellent substrate temperature control
  • Precise process control
  • Proven processes for 300mm single wafer Failure Analysis
PlasmaPro 100 PECVD

PlasmaPro 100 PECVD

  • High-quality films with high throughput
  • Compatible with all wafer sizes up to 200mm
  • Resistive heated electrodes with capability up to 400°C or 1200°C
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