Memorias de investigación
Communications at congresses:
UV LASER SELECTIVE ABLATION OF PHOTOVOLTAIC MATERIALS FOR MONOLITHIC INTERCONNECTION OF DEVICES BASED ON a-Si:H
Year:2008

Research Areas
  • Mechanical engineering,
  • Magnetic materials

Information
Abstract
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.
International
Si
Congress
23rd European Photovoltaic Solar Energy Conference
960
Place
VALENCIA
Reviewers
Si
ISBN/ISSN
3-936338-24-8
Start Date
01/09/2008
End Date
05/09/2008
From page
2438
To page
2442
23rd European Photovoltaic Solar Energy Conference
Participants
  • 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: Sara Lauzurica Santiago UPM
  • Autor: Juan José García-Ballesteros . UPM
  • Autor: Gonzalo Guadaño Ayuso UPM
  • Autor: Miguel Morales Furio UPM
  • AUTOR: I. SÁNCHEZ-ANIORTE CENTRO LÁSER UPM
  • Autor: Carlos Luis Molpeceres Alvarez UPM
  • Autor: Mónica Colina Brito UPM
  • AUTOR: J.J. GANDIA CIEMAT
  • 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