Memorias de investigación
Ponencias en congresos:
Progress on the development of a technology for silicon purification
Año:2012
Áreas de investigación
  • Ingeniería eléctrica, electrónica y automática,
  • Materiales para ingeniería eléctrica y electrónica,
  • Células solares,
  • Tecnología de dispositivos para ingeniería eléctrica y electrónica
Datos
Descripción
The polysilicon market is experiencing tremendous changes due to the strong demand from Photovoltaics (PV), which has by far surpassed the demand from Microelectronics. The need of solar silicon has induced a large increase in capacity, which has now given a scenario of oversupply, reducing the polysilicon price to levels that put a strong pressure on the cost structure of the producers. The paper reports on the R&D efforts carried out in the field of solar silicon purification via the chlorosilane route by a private-public consortium that is building a pilot plant of 50-100 tonnes/year, that will synthesize trichlorosilane, purify it and deposit ultrapure silicon in an industrial-size Siemens type reactor. It has also capabilities for ingot growth and material characterization. A couple of examples of the progress so far are given, the first one related to the recycling scheme of chlorinated compounds, and the second to the minimization of radiation losses in the CVD deposition process, which account for a relevant part of the total energy consumption. In summary, the paper gives details on the technology being developed in our pilot plant, which offers a unique platform for field-testing of innovative approaches that can lead to a cost reduction of solar silicon produced via the chlorosilane route.
Internacional
Si
Nombre congreso
6th International Workshop on Crystalline Silicon Solar Cells
Tipo de participación
960
Lugar del congreso
Aix les Bains, Francia
Revisores
Si
ISBN o ISSN
000-0000-000-000
DOI
Fecha inicio congreso
08/10/2012
Fecha fin congreso
11/10/2012
Desde la página
1
Hasta la página
4
Título de las actas
Proc. CSSC6
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Participantes
Grupos de investigación, Departamentos, Centros e Institutos de I+D+i relacionados
  • Creador: Grupo de Investigación: Silicio y Nuevos Conceptos para Células Solares
  • Centro o Instituto I+D+i: Instituto de Energía Solar
  • Departamento: Electrónica Física