Effects of internal luminescence and internal optics on V-oc and J(sc) of III-V solar cells

Steiner, Myles A.; Geisz, John F.; García Vara, Iván; Friedman, Daniel J.; Duda, Anna; Olavarria, Waldo J.; Young, Michelle; Kuciauskas, Darius y Kurtz, Sarah R. (2013). Effects of internal luminescence and internal optics on V-oc and J(sc) of III-V solar cells. "IEEE Journal of Photovoltaics", v. 3 (n. 4); pp. 1437-1442. ISSN 2156-3381. https://doi.org/10.1109/JPHOTOV.2013.2278666.

Descripción

Título: Effects of internal luminescence and internal optics on V-oc and J(sc) of III-V solar cells
Autor/es:
  • Steiner, Myles A.
  • Geisz, John F.
  • García Vara, Iván
  • Friedman, Daniel J.
  • Duda, Anna
  • Olavarria, Waldo J.
  • Young, Michelle
  • Kuciauskas, Darius
  • Kurtz, Sarah R.
Tipo de Documento: Artículo
Título de Revista/Publicación: IEEE Journal of Photovoltaics
Fecha: Octubre 2013
Volumen: 3
Materias:
Palabras Clave Informales: Luminescence, luminescent coupling, photon recycling, radiative recombination, III–V solar cell
Escuela: Instituto de Energía Solar (IES) (UPM)
Departamento: Otro
Licencias Creative Commons: Reconocimiento - Sin obra derivada - No comercial

Texto completo

[img]
Vista Previa
PDF (Document Portable Format) - Se necesita un visor de ficheros PDF, como GSview, Xpdf o Adobe Acrobat Reader
Descargar (1MB)

Resumen

For solar cells dominated by radiative recombination, the performance can be significantly enhanced by improving the internal optics. Internally radiated photons can be directly emitted from the cell, but if confined by good internal reflectors at the front and back of the cell they can also be re-absorbed with a significant probability. This so-called photon recycling leads to an increase in the equilibrium minority carrier concentration and therefore the open-circuit voltage, Voc. In multijunction cells, the internal luminescence from a particular junction can also be coupled into a lower bandgap junction where it generates photocurrent in addition to the externally generated photocurrent, and affects the overall performance of the tandem. We demonstrate and discuss the implications of a detailed model that we have developed for real, non-idealized solar cells that calculates the external luminescent efficiency, accounting for wavelength-dependent optical properties in each layer, parasitic optical and electrical losses, multiple reflections within the cell and isotropic internal emission. The calculation leads to Voc, and we show data on high quality GaAs cells that agree with the trends in the model as the optics are systematically varied. For multijunction cells the calculation also leads to the luminescent coupling efficiency, and we show data on GaInP/GaAs tandems where the trends also agree as the coupling is systematically varied. In both cases, the effects of the optics are most prominent in cells with good material quality. The model is applicable to any solar cell for which the optical properties of each layer are well-characterized, and can be used to explore a wide phase space of design for single junction and multijunction solar cells.

Más información

ID de Registro: 26283
Identificador DC: http://oa.upm.es/26283/
Identificador OAI: oai:oa.upm.es:26283
Identificador DOI: 10.1109/JPHOTOV.2013.2278666
URL Oficial: http://ieeexplore.ieee.org/stamp/stamp.jsp?arnumber=06588307
Depositado por: Memoria Investigacion
Depositado el: 31 May 2014 13:17
Ultima Modificación: 22 Sep 2014 11:40
  • Open Access
  • Open Access
  • Sherpa-Romeo
    Compruebe si la revista anglosajona en la que ha publicado un artículo permite también su publicación en abierto.
  • Dulcinea
    Compruebe si la revista española en la que ha publicado un artículo permite también su publicación en abierto.
  • Recolecta
  • e-ciencia
  • Observatorio I+D+i UPM
  • OpenCourseWare UPM