Upper limits to absorption enhancement in thick solar cells using diffraction gratings

Mellor Null, Alexander Virgil; Tobías Galicia, Ignacio; Martí Vega, Antonio; Mendes, Manuel J. y Luque López, Antonio (2011). Upper limits to absorption enhancement in thick solar cells using diffraction gratings. "Progress in photovoltaics: research and applications", v. 19 (n. 6); pp. 676-687. ISSN 1099-159X. https://doi.org/10.1002/pip.1086.

Descripción

Título: Upper limits to absorption enhancement in thick solar cells using diffraction gratings
Autor/es:
  • Mellor Null, Alexander Virgil
  • Tobías Galicia, Ignacio
  • Martí Vega, Antonio
  • Mendes, Manuel J.
  • Luque López, Antonio
Tipo de Documento: Artículo
Título de Revista/Publicación: Progress in photovoltaics: research and applications
Fecha: Septiembre 2011
Volumen: 19
Materias:
Escuela: E.T.S.I. Telecomunicación (UPM)
Departamento: Electrónica Física
Licencias Creative Commons: Reconocimiento - Sin obra derivada - No comercial

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Resumen

The application of diffraction gratings to solar cells is a promising approach to superseding the light trapping limits of conventional Lambertian structures. In this paper a mathematical formalism is derived for calculating the absorption that can be expected in a solar cell equipped with a diffraction grating, which can be applied to any lattice geometry and grating profile. Furthermore, the formalism is used to calculate the upper limit of total absorption that can theoretically be achieved using a diffraction grating. The derived formalism and limits are valid when the solar cell thickness is greater than the coherence length of the illuminating solar spectrum. Comparison is made to the upper limit achievable using an angularly selective Rugate filter, which is also calculated. Both limits are found to be considerably higher than the Lambertian limit within the range of sunlight concentration factors practically employed in photovoltaic systems (1–1000×). The upper limit of absorption using the diffraction grating is shown to be equal to the thermodynamic limit for all absorbances and concentration factors. The limit for the Rugate filter is generally lower, but tends to the thermodynamic limit for lower cell absorbances

Proyectos asociados

TipoCódigoAcrónimoResponsableTítulo
FP7211640IBPOWERSin especificarIntermediate Band Materials and Solar Cells for Photovoltaics with High Efficiency and Reduced Cost

Más información

ID de Registro: 10415
Identificador DC: http://oa.upm.es/10415/
Identificador OAI: oai:oa.upm.es:10415
Identificador DOI: 10.1002/pip.1086
URL Oficial: http://onlinelibrary.wiley.com/doi/10.1002/pip.1086/abstract
Depositado por: Memoria Investigacion
Depositado el: 29 Feb 2012 09:20
Ultima Modificación: 31 Oct 2014 12:02
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