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Journal of Materials Science

, Volume 54, Issue 17, pp 11546–11555 | Cite as

Study of interactions between silicon and coated graphite for application to photovoltaic silicon processing

  • C. Huguet
  • C. Dechamp
  • D. Camel
  • B. DrevetEmail author
  • N. Eustathopoulos
Electronic materials
  • 87 Downloads

Abstract

The crystallization of silicon for photovoltaic applications is currently performed by directional solidification in amorphous silica crucibles. In order to avoid sticking, silica crucibles are coated with a layer of silicon nitride which acts as an interface releasing agent between the silicon and the crucible. Due to silica softening and subsequent transformations during the melting-solidification cycle, Si3N4-coated silica crucibles can be used only one time. A more interesting solution would be to have a graphite crucible which could be used several times in view of its high mechanical performances at elevated temperatures. The goal of this study is to determine in which way the Si3N4 coating can also be used for graphite crucibles. The study is conducted by means of the sessile drop technique and microstructure characterizations carried out by optical microscopy. For comparison purposes, experiments are also performed for the standard configuration of Si3N4-coated silica.

Notes

Compliance with ethical standards

Conflict of interest

The authors declare that they have no conflict of interest.

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Copyright information

© Springer Science+Business Media, LLC, part of Springer Nature 2019

Authors and Affiliations

  1. 1.CEA, LITEN, INES, Department of Solar TechnologiesUniv. Grenoble AlpesGrenobleFrance
  2. 2.SIMaPUniv. Grenoble Alpes-CNRSGrenobleFrance

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