Memorias de investigación
Ponencias en congresos:
On track for Solar Grade Silicon through a Siemens process-type laboratory reactor: operating conditions and energy savings
Año:2012
Áreas de investigación
  • Ingeniería eléctrica, electrónica y automática,
  • Dispositivos electrónicos,
  • Materiales para ingeniería eléctrica y electrónica,
  • Tecnología de dispositivos para ingeniería eléctrica y electrónica
Datos
Descripción
Polysilicon cost impacts significantly on the photovoltaics (PV) cost and on the energy payback time. Nowadays, the besetting production process is the so called Siemens process, polysilicon deposition by chemical vapor deposition (CVD) from Trichlorosilane. Polysilicon purification level for PV is to a certain extent less demanding that for microelectronics. At the Instituto de Energía Solar (IES) research on this subject is performed through a Siemens process-type laboratory reactor. Through the laboratory CVD prototype at the IES laboratories, valuable information about the phenomena involved in the polysilicon deposition process and the operating conditions is obtained. Polysilicon deposition by CVD is a complex process due to the big number of parameters involved. A study on the influence of temperature and inlet gas mixture composition on the polysilicon deposition growth rate, based on experimental experience, is shown. Moreover, CVD process accounts for the largest contribution to the energy consumption of the polysilicon production. In addition, radiation phenomenon is the major responsible for low energetic efficiency of the whole process. This work presents a model of radiation heat loss, and the theoretical calculations are confirmed experimentally through a prototype reactor at our disposal, yielding a valuable know-how for energy consumption reduction at industrial Siemens reactors.
Internacional
Si
Nombre congreso
Silicon for the Chemical and Solar Industry XI
Tipo de participación
960
Lugar del congreso
Bergen-Ulvik, Noruega
Revisores
Si
ISBN o ISSN
00-0000-000-0000
DOI
Fecha inicio congreso
25/06/2012
Fecha fin congreso
29/06/2012
Desde la página
1
Hasta la página
12
Título de las actas
Proc. Silicon for the Chemical and Solar Industry XI
Esta actividad pertenece a memorias de investigación
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