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CEA-INES SUSI platform

[Cheetah Partner]
  • Crystallisation and wafering processes
  • Silicon ingot and wafer characterisation

Technical Info

Main Features

Crystallisation equipments with both inductive and resistive furnaces, and both conduction andr adiation heat extraction. Two furnaces are available but collaborations on the 450-800kg furnace from ECM technologies, located at INES, are possible. Various software like FLUENT and COMSOL are used for the modelling of the furnaces.

  1. An inductive furnace from Cyberstar (10kg), with a radial induction coil and a heat extraction by conduction. This furnace can produce circular ingots of 10kg, which corresponds to 1 brick of 125*125 mm2.
  2. A resistive furnace from TIV (60kg), close to the design of industrial furnaces, with a resistor at the top and bottom of the crucible, and the possibility to add a lateral resistor if necessary. This furnace is fully instrumented, with gas analysis, high temperature endoscopic visualisation, variation of partial pressure atmosphere, and both heat extraction by conductionand radiation. The crucible size of 60kg allows the production of 4 bricks of 156*156 mm2
  • Slicing tools with all the facilities to go from 60 kg ingots to wafer with thickness down to 100μm. This step includes the cleaning facilities for bricks and wafers as well as grinding and chamfering

Characterisation equipments:

  1. ICP-MS from Agilent : ppb resolution for B, P and metallic elements analysis in Si feedstock,
  2. MEB-FEG NovaSEM 630 from FEI (1.6 nm resolution) including EBIC and  STEM analysis
  3. A metallographic area, including all the facilities for polishing and a cross section polisher (ion beam). All acid attacks for silicon a re possible.
  4. Last generation  optical microscopy including visualisation at 1500° C is also available
  5. Electrical characterisation of ingots and wafers. Most of the equipments are  available Resistivity measurement, hall effect, Semilab (wafer and brick), Sinton, PVSCAN, LID test bench, LBIC, FTIR, IR brick measurement,...)

Limitations or contraints to access :

  • The access can be  allowed with technical and scientific assistance from INES.  For the crystallisation process, the experiments can  realized by INES technical staff


Typical services:

  • Silicon feedstock both electronic grade and metallurgical grade can be provided if necessary. Most of these equipments are new, as this laboratory started its activity  recently. They provide an ideal environment for crystallisation studies on various substrates and in various crucibles

Partecipation to Projects:

  • Fundamental and experimental studies focused on silicon crystallization and  comprehensive description of defects in silicon material



CEA-INES | 50 avenue du lac Léman  Technopôle Savoie Technolac |73375-Le Bourget du Lac Cedex | France

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