Influence of high aluminium content on the mechanical properties of directionally solidified multicrystalline silicon

Orellana Pérez, T. and Tejado Garrido, Elena María and Funke, V.C. and Riepe, S. and Pastor Caño, Jose Ignacio and Möller, H.J. (2014). Influence of high aluminium content on the mechanical properties of directionally solidified multicrystalline silicon. "Journal of Materials Science", v. 49 (n. 14); pp. 4905-4918. ISSN 0022-2461. https://doi.org/10.1007/s10853-014-8192-5.

Description

Title: Influence of high aluminium content on the mechanical properties of directionally solidified multicrystalline silicon
Author/s:
  • Orellana Pérez, T.
  • Tejado Garrido, Elena María
  • Funke, V.C.
  • Riepe, S.
  • Pastor Caño, Jose Ignacio
  • Möller, H.J.
Item Type: Article
Título de Revista/Publicación: Journal of Materials Science
Date: July 2014
ISSN: 0022-2461
Volume: 49
Subjects:
Freetext Keywords: multicrystalline silicon, aluminium
Faculty: E.T.S.I. Caminos, Canales y Puertos (UPM)
Department: Ciencia de los Materiales
Creative Commons Licenses: Recognition - No derivative works - Non commercial

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Abstract

The purpose of this research is the mechanical characterisation of multicrystalline silicon crystallised from silicon feedstock with a high content of aluminium for photovoltaic applications. The mechanical strength, fracture toughness and elastic modulus were measured at different positions within the multicrystalline silicon block to quantify the impact of the segregation of impurities on these mechanical properties. Aluminium segregated to the top of the block and caused extensive micro-cracking of the silicon matrix due to the thermal mismatch between silicon and the aluminium inclusions. Silicon nitride inclusions reduced the fracture toughness and caused failure by radial cracking in its surroundings due to its thermal mismatch with silicon. However, silicon carbide increased the fracture toughness and elastic modulus of silicon.

Funding Projects

TypeCodeAcronymLeaderTitle
Government of SpainMAT2009-13979-C03UnspecifiedUnspecifiedUnspecified
Madrid Regional GovernmentS-S2009/MAT-1585-ESTRUMAT2UnspecifiedUnspecifiedUnspecified

More information

Item ID: 35450
DC Identifier: http://oa.upm.es/35450/
OAI Identifier: oai:oa.upm.es:35450
DOI: 10.1007/s10853-014-8192-5
Official URL: http://link.springer.com/article/10.1007%2Fs10853-014-8192-5
Deposited by: Memoria Investigacion
Deposited on: 01 Jul 2015 11:14
Last Modified: 16 May 2019 07:11
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