Characterization of impurities in GaInNAs pn junctions from capacitance transient spectroscopy

  • J. A. Jiménez Tejada
  • , M. J. Deen
  • , P. Lara Bullejos
  • , J. A. López Villanueva
  • , F. M. Gómez-Campos
  • , S. Rodríguez-Bolívar

Producción científica: Capítulo del libro/informe/acta de congresoContribución a la conferenciarevisión exhaustiva

Resumen

Difficulties and their solutions found during the determination of parameters of impurities in thin GaInNAs solar cells, by means of spectroscopic capacitance measurements, are presented in this work. The parameters of impurities present in the GaInNAs pn junctions are determined by an iterative method, comparing experimental capacitance transients with calculated ones. The results disagree with the ones obtained by applying the classical expressions associated to the capacitance deep level transient spectroscopy (DLTS). The parameters of the centers are used to determine the hole diffusion lengths in the semiconductor. The agreement between the hole diffusion lengths obtained with our method and results found in literature means that DLTS must be used with care when determining recombination centers in thin pn junctions. An expression to be included in the DLTS technique, that incorporates these effects, is proposed.

Idioma originalInglés
Título de la publicación alojada2007 Spanish Conference on Electron Devices, Proceedings
Páginas139-142
Número de páginas4
DOI
EstadoPublicada - 15 oct. 2007
Publicado de forma externa
Evento2007 Spanish Conference on Electron Devices, SCED - Madrid, Espana
Duración: 31 ene. 20072 feb. 2007

Serie de la publicación

Nombre2007 Spanish Conference on Electron Devices, Proceedings

Conferencia

Conferencia2007 Spanish Conference on Electron Devices, SCED
País/TerritorioEspana
CiudadMadrid
Período31/01/072/02/07

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