Observatorio de I+D+i UPM

Memorias de investigación
Research Publications in journals:
Interband absorption of photons by extended states in intermediate band solar cells
Year:2013
Research Areas
  • Electronic devices,
  • Solar cells
Information
Abstract
This paper considers sub-bandgap photon absorption in an InAs/GaAs quantum dot matrix. Absorption coefficients are calculated for transitions from the extended states in the valence band to confined states in the conduction band. This completes a previous body of work in which transitions between bound states were calculated. The calculations are based on the empirical k·p Hamiltonian considering the quantum dots as parallelepipeds. The extended states may be only partially extended?in one or two dimensions?or extended in all three dimensions. It is found that extended-to-bound transitions are, in general, weaker than bound-to-bound transitions, and that the former are weaker when the initial state is extended in more coordinates. This study is of direct application to the research of intermediate band solar cells and other semiconductor devices based on light absorption in semiconductors nanostructured with quantum dots.
International
Si
JCR
Si
Title
Solar Energy Materials And Solar Cells
ISBN
0927-0248
Impact factor JCR
4,63
Impact info
Volume
115
Journal number
From page
134
To page
144
Month
SIN MES
Ranking
Participants
  • Autor: Antonio Luque Lopez (UPM)
  • Autor: Alexander Virgil Mellor . (UPM)
  • Autor: Iñigo Ramiro Gonzalez (UPM)
  • Autor: Elisa Antolin Fernandez (UPM)
  • Autor: Ignacio Tobias Galicia (UPM)
  • Autor: Antonio Marti Vega (UPM)
Research Group, Departaments and Institutes related
  • Creador: Grupo de Investigación: Silicio y Nuevos Conceptos para Células Solares
  • Centro o Instituto I+D+i: Instituto de Energía Solar
  • Departamento: Electrónica Física
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)