The crucible/silicon interface in directional solidification of photovoltaic silicon
| Autor: | F. Disdier, D. Camel, B. Drevet, E. Cierniak, N. Eustathopoulos, V. Brizé |
|---|---|
| Přispěvatelé: | Département des Technologies Solaires (DTS), Laboratoire d'Innovation pour les Technologies des Energies Nouvelles et les nanomatériaux (LITEN), Institut National de L'Energie Solaire (INES), Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université Savoie Mont Blanc (USMB [Université de Savoie] [Université de Chambéry])-Centre National de la Recherche Scientifique (CNRS)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université Savoie Mont Blanc (USMB [Université de Savoie] [Université de Chambéry])-Centre National de la Recherche Scientifique (CNRS)-Institut National de L'Energie Solaire (INES), Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université Savoie Mont Blanc (USMB [Université de Savoie] [Université de Chambéry])-Centre National de la Recherche Scientifique (CNRS)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université Savoie Mont Blanc (USMB [Université de Savoie] [Université de Chambéry])-Centre National de la Recherche Scientifique (CNRS), Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université Savoie Mont Blanc (USMB [Université de Savoie] [Université de Chambéry])-Centre National de la Recherche Scientifique (CNRS) |
| Rok vydání: | 2017 |
| Předmět: |
inorganic chemicals
Silicon Materials science Polymers and Plastics Crucible chemistry.chemical_element 02 engineering and technology Nitride engineering.material Porous silicon complex mixtures 01 natural sciences 7. Clean energy [SPI.MAT]Engineering Sciences [physics]/Materials Coating Monocrystalline silicon 0103 physical sciences Interface structure Directional solidification 010302 applied physics Interface wetting Metallurgy technology industry and agriculture Metals and Alloys Nanocrystalline silicon equipment and supplies 021001 nanoscience & nanotechnology Electronic Optical and Magnetic Materials stomatognathic diseases chemistry 13. Climate action Ceramics and Composites engineering Crystallization 0210 nano-technology |
| Zdroj: | Acta Materialia Acta Materialia, 2017, 129, pp.415-427. ⟨10.1016/j.actamat.2017.02.072⟩ Acta Materialia, Elsevier, 2017, 129, pp.415-427. ⟨10.1016/j.actamat.2017.02.072⟩ |
| ISSN: | 1359-6454 |
| DOI: | 10.1016/j.actamat.2017.02.072 |
| Popis: | International audience; Photovoltaic silicon ingots are currently grown in silica crucibles coated with a porous silicon nitride layer which acts as an interface releasing agent between the silicon and the crucible. The interactions between Si and the Si3N4 coating determine the infiltration and sticking phenomena occurring at the interface and also affect the pollution of Si by the components of the coating. In this investigation the interfacial interactions and microstructure are studied in crystallization experiments performed in crucibles involving high silicon masses (tens of kg) and long contact time between the silicon and the coated silica (tens of hours). It is shown that for long times, a dramatic change in the nature of the coating/Si interface takes place, with the formation of a self-crucible which prevents the direct contact between the silicon and the coating. The stability of the self-crucible is modeled taking into account the capillary and hydrostatic pressures. The influence of the self-crucible on different practical aspects of the photovoltaic silicon crystallization process is discussed. (C) 2017 Acta Materialia Inc. Published by Elsevier Ltd. All rights reserved. |
| Databáze: | OpenAIRE |
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