Observatorio de I+D+i UPM

Memorias de investigación
Communications at congresses:
Improving optical performance of concentrator cells by means of a deposited nanopattern layer
Year:2015
Research Areas
  • Solar cells
Information
Abstract
Multijunction solar cells (MJSC) use anti-reflective coatings (ARC) to minimize Fresnel reflection losses for a family of light incidence angles. These coatings adapt the refractive index of the cell to that of the surrounding medium. Patterns with sizes in the range of the light wavelength can be used to further reduce reflections through diffraction. Transparent nanopatterns with a gradual profile, called moth-eye nanostructures, can adapt the refractive index of the optical interfaces (often with n~1.5) used to encapsulate concentrator solar cells to that of the air (nair~1). Here we show the effect of a nanometric moth-eye ARC with a round motif deposited on commercial MJSC that achieves short-circuit current (ISC) gains greater than 2% at normal incidence and even higher in the case of tilted illumination. In this work, MJSC with different moth-eye ARC are characterized under quantum efficiency (QE) as well as under concentrated illumination I-V in order to assess their potential. Simulations based on coupled wave analysis (RCWA) are used to fit the experimental results with successful results.
International
Si
Congress
11th International Conference on Concentrator Photovoltaic Systems - CPV-11
960
Place
Aix-les-Bains, France
Reviewers
Si
ISBN/ISSN
978-0-7354-1326-9
http://dx.doi.org/10.1063/1.4931515
Start Date
13/04/2015
End Date
15/04/2015
From page
400041
To page
400049
AIP Conference Proceedings Vol. 1679
Participants
  • Autor: Pablo Garcia-Linares Fontes (UPM)
  • Autor: Cesar Dominguez Dominguez (UPM)
  • Autor: O. Dellea
  • Autor: T. Kämpfe
  • Autor: Y. Jourlin
  • Autor: P. Besson
  • Autor: C. Weik
  • Autor: M. Baudrit
Research Group, Departaments and Institutes related
  • Creador: Centro o Instituto I+D+i: Instituto de Energía Solar
  • Departamento: Ingeniería Eléctrica, Electrónica Automática y Física Aplicada
S2i 2020 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)