Observatorio de I+D+i UPM

Memorias de investigación
New strategies in laser processing of TCOs for light management improvement in thin-film silicon solar cells
Áreas de investigación
  • Ingenierías,
  • Ingeniería mecánica, aeronaútica y naval,
  • Ingeniería eléctrica, electrónica y automática
Light confinement strategies play a crucial role in the performance of thin-film (TF) silicon solar cells. One way to reduce the optical losses is the texturing of the transparent conductive oxide (TCO) that acts as the front contact. Other losses arise from the mismatch between the incident light spectrum and the spectral properties of the absorbent material that imply that low energy photons (below the bandgap value) are not absorbed, and therefore can not generate photocurrent. Up-conversion techniques, in which two sub-bandgap photons are combined to give one photon with a better matching with the bandgap, were proposed to overcome this problem. In particular, this work studies two strategies to improve light management in thin film silicon solar cells using laser technology. The first one addresses the problem of TCO surface texturing using fully commercial fast and ultrafast solid state laser sources. Aluminum doped Zinc Oxide (AZO) samples were laser processed and the results were optically evaluated by measuring the haze factor of the treated samples. As a second strategy, laser annealing experiments of TCOs doped with rare earth ions are presented as a potential process to produce layers with up-conversion properties, opening the possibility of its potential use in high efficiency solar cells.
Entidad relacionada
Nacionalidad Entidad
Lugar del congreso
Esta actividad pertenece a memorias de investigación
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  • Autor: M Lluscà (U. Barcelona)
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  • Autor: M.I. Sánchez-Aniorte (UPM)
  • Autor: JJ López-Vidrier (U. Barcelona)
  • Autor: S Hernández (U. Barcelona)
  • Autor: J. Bertomeu (U. Barcelona)
  • Autor: Carlos Luis Molpeceres Alvarez (UPM)
Grupos de investigación, Departamentos, Centros e Institutos de I+D+i relacionados
  • Creador: Grupo de Investigación: Grupo de Investigación en Ingeniería y Aplicaciones del Láser
  • Centro o Instituto I+D+i: Centro Laser
  • Departamento: Física Aplicada e Ingeniería de Materiales
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