Observatorio de I+D+i UPM

Memorias de investigación
Research Publications in journals:
Cu(In,Ga)Se2 absorber thinning and the homo-interface model: Influence of Mo back contact and 3-stage process on device characteristics
Year:2014
Research Areas
  • Electronic devices,
  • Solar cells,
  • Technology of devices for engineering
Information
Abstract
Thinning the absorber layer is one of the possibilities envisaged to further decrease the production costs of Cu(In,Ga)Se2 (CIGSe) thin films solar cell technology. In the present study, the electronic transport in submicron CIGSe-based devices has been investigated and compared to that of standard devices. It is observed that when the absorber is around 0.5?m-thick, tunnelling enhanced interface recombination dominates, which harms cells energy conversion efficiency. It is also shown that by varying either the properties of the Mo back contact or the characteristics of 3-stage growth processing, one can shift the dominating recombination mechanism from interface to space charge region and thereby improve the cells efficiency. Discussions on these experimental facts led to the conclusions that 3-stage process implies the formation of a CIGSe/CIGSe homo-interface, whose location as well as properties rule the device operation; its influence is enhanced in submicron CIGSe based solar cells.
International
Si
JCR
Si
Title
Journal of Applied Physics
ISBN
0021-8979
Impact factor JCR
2,185
Impact info
Volume
116
Journal number
7
From page
074512-1
To page
074512-7
Month
SIN MES
Ranking
Participants
  • Autor: Irene Artacho Huertas (UPM)
  • Autor: E. Leonard
  • Autor: L. Arzel
  • Autor: M. Tomassini
  • Autor: P. Zabierowski
  • Autor: David Fuertes Marron (UPM)
  • Autor: N. Barreau
Research Group, Departaments and Institutes related
  • Creador: Grupo de Investigación: Silicio y Nuevos Conceptos para Células Solares
  • Departamento: Electrónica Física
  • Centro o Instituto I+D+i: Instituto de Energía Solar
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)