Observatorio de I+D+i UPM

Memorias de investigación
Book chapters:
UV Laser Selective Ablation of Photovoltaic Materials for Monolithic Interconnection of Devices Based on a-Si:H
Research Areas
  • Mechanical engineering,
  • Magnetic materials
In this paper we present recent results in laser ablation of photovoltaic materials using excimer and UV wavelengths of Diode-Pumped Solid-State Laser Sources (DPSS). We discuss results concerning UV ablation of different TCO and thin-film silicon (a-Si:H and nc-Si:H), focussing our study on ablation threshold measurements and process-quality assessment using advanced optical microscopy techniques. Additionally we present preliminary results for Heat affected zone estimation using refractive index measurements. We include a comparison of ablation thresholds for different materials of interest as well. In that way we show the advantages of using UV wavelengths for minimizing the characteristic material thermal affection of laser irradiation in the ns regime at higher wavelengths. Additionally we include preliminary results of selective ablation of film on film structures irradiating from the film side (direct writing configuration) including the problem of selective ablation of ZnO films on a-Si;H layers. In that way we demonstrate the potential use of UV wavelengths of fully commercial lasers sources as an alternative to standard backscribing process in device fabrication.
Book Edition
Book Publishing
Book title
23rd. European Photovoltaic Solar Energy Conference
From page
To page
  • AUTOR: F. VILLAR (CeRMAE, Dept. Física Aplicada i Òptica, Universitat de Barcelona)
  • AUTOR: O. NOS (CeRMAE, Dept. Física Aplicada i Òptica, Universitat de Barcelona)
  • AUTOR: J. BERTOMEU (CeRMAE, Dept. Física Aplicada i Òptica, Universitat de Barcelona)
  • Autor: Carlos Luis Molpeceres Alvarez (UPM)
  • Autor: Miguel Morales Furio (UPM)
  • Autor: Mónica Colina Brito (UPM)
  • Autor: Gonzalo Guadaño Ayuso (UPM)
  • Autor: Juan José García-Ballesteros . (UPM)
  • Autor: Jose Luis Ocaña Moreno (UPM)
  • AUTOR: J.J. GANDÍA (Dept. de Energías Renovables. Energía Solar Fotovoltaica. CIEMAT.)
  • Autor: Sara Lauzurica Santiago (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)