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Memorias de investigación
Artículos en revistas:
Laser ablation modelling of aluminium, silver and crystalline silicon for applications in photovoltaic technologies
Año:2009
Áreas de investigación
  • Ingenieria mecanica,
  • Materiales de construccion
Datos
Descripción
Laser material processing is being extensively used in photovoltaic applications for both the fabrication of thin film modules and the enhancement of the crystalline silicon solar cells. The two temperature model for thermal diffusion was numerically solved in this paper. Laser pulses of 1064, 532 or 248 nm with duration of 35, 26 or 10 ns were considered as the thermal source leading to the material ablation. Considering high irradiance levels (108¿109 W cm¿2), a total absorption of the energy during the ablation process was assumed in the model. The materials analysed in the simulation were aluminium (Al) and silver (Ag), which are commonly used as metallic electrodes in photovoltaic devices. Moreover, thermal diffusion was also simulated for crystalline silicon (c-Si). A similar trend of temperature as a function of depth and time was found for both metals and c-Si regardless of the employed wavelength. For each material, the ablation depth dependence on laser pulse parameters was determined by means of an ablation criterion. Thus, after the laser pulse, the maximum depth for which the total energy stored in the material is equal to the vaporisation enthalpy was considered as the ablation depth. For all cases, the ablation depth increased with the laser pulse fluence and did not exhibit a clear correlation with the radiation wavelength. Finally, the experimental validation of the simulation results was carried out and the ability of the model with the initial hypothesis of total energy absorption to closely fit experimental results was confirmed.
Internacional
Si
JCR del ISI
Si
Título de la revista
SURFACE ENGINEERING
ISSN
0267-0844
Factor de impacto JCR
0,354
Información de impacto
Volumen
DOI
DOI: 10.1179/174329409X397804
Número de revista
0
Desde la página
1
Hasta la página
10
Mes
ENERO
Ranking
Esta actividad pertenece a memorias de investigación
Participantes
  • Autor: Mónica Colina Brito (UPM)
  • Autor: Carlos Luis Molpeceres Alvarez (UPM)
  • Autor: Miguel Morales Furio (UPM)
  • Autor: Fernando Avendaño Allen-Perkins (UPM)
  • Autor: Gonzalo Guadaño Ayuso (UPM)
  • Autor: Jose Luis Ocaña Moreno (UPM)
Grupos de investigación, Departamentos, Centros e Institutos de I+D+i relacionados
  • Creador: Grupo de Investigación: Ingeniería y Aplicaciones del Láser
  • Centro o Instituto I+D+i: Centro Laser
  • Departamento: Física Aplicada a la Ingeniería Industrial
  • Departamento: Automática, Ingeniería Electrónica e Informática Industrial
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