Observatorio de I+D+i UPM

Memorias de investigación
Research Publications in journals:
InAs/InGaP quantum dot solar cells with an AlGaAs interlayer
Year:2016
Research Areas
  • Solar cells
Information
Abstract
We studied the growth of InAs/InGaP quantum dot (QD) solar cells with near ideal bandgaps for intermediate band solar cells. Using a solid-source molecular beam epitaxy system, the evolution of InAs QDs grown on an InGaP buffer layer was examined as a function of InAs coverage and growth temperature. QDs were initiated with defective clusters for InAs deposition as small as 0.3 monolayer. The cross diffusion of In atoms and As?P exchange between InAs and the InGaP buffer layer could be responsible for the formation of coherent QDs and large defective clusters. An AlGaAs interlayer was inserted between InAs and the InGaP buffer layer to prevent the surface exchange reactions between InAs and InGaP. As a result, InAs QDs with a density of 1×1011 cm?2 have been demonstrated with stronger photoluminescence emission compared to those with the GaAs interlayer. This growth technique was applied to fabricate InAs/InGaP QD solar cells. Post-growth annealing treatment was also investigated to improve the performance of QD solar cells.
International
Si
JCR
Si
Title
Solar Energy Materials And Solar Cells
ISBN
0927-0248
Impact factor JCR
5,03
Impact info
Volume
144
10.1016/j.solmat.2015.08.031
Journal number
From page
96
To page
101
Month
SIN MES
Ranking
Participants
  • Autor: P. Lam
  • Autor: J. Wu
  • Autor: M. Tang
  • Autor: D. Kim
  • Autor: S. Hatch
  • Autor: Iñigo Ramiro Gonzalez (UPM)
  • Autor: V.G. Dorogan
  • Autor: M. Benamara
  • Autor: Y.I. Mazur
  • Autor: G.J. Salamo
  • Autor: J. Wilson
  • Autor: R. Allison
  • Autor: H. Liu
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
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)