Observatorio de I+D+i UPM

Memorias de investigación
Research Publications in journals:
Laser ablation modelling of aluminium, silver and crystalline silicon for applications in photovoltaic technologies
Year:2009
Research Areas
  • Mechanical engineering,
  • Construction materials
Information
Abstract
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.
International
Si
JCR
Si
Title
SURFACE ENGINEERING
ISBN
0267-0844
Impact factor JCR
0,354
Impact info
Volume
DOI: 10.1179/174329409X397804
Journal number
0
From page
1
To page
10
Month
ENERO
Ranking
Participants
  • 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)
Research Group, Departaments and Institutes related
  • 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
S2i 2019 Observatorio de investigación @ UPM con la colaboración del Consejo Social UPM
Cofinanciación del MINECO en el marco del Programa INNCIDE 2011 (OTR-2011-0236)
Cofinanciación del MINECO en el marco del Programa INNPACTO (IPT-020000-2010-22)