Observatorio de I+D+i UPM

Memorias de investigación
Research Publications in journals:
Sb and N incorporation interplay in GaAsSbN/GaAs epilayers near lattice matching con-dition for 1.0.-1.16 eV photonic applications
Year:2017
Research Areas
  • Electronic technology and of the communications
Information
Abstract
As promising candidates for solar cell and photodetection applications in the range 1.0?1.16 eV, the growth of dilute nitride GaAsSbN alloys lattice matched to GaAs is studied. With this aim, we have taken advantage of the temperature gradient in the molecular beam epitaxy reactor to analyse the impact of temperature on the incorporation of Sb and N species according to the wafer radial composition gradients. The results from the combination of X-ray diffraction (XRD) and energy-dispersive X-ray spectroscopies (EDS) show an opposite rate of incorporation between N and Sb as we move away from the centre of the wafer. A competitive behaviour between Sb and N in order to occupy the group-V position is observed that depends on the growth rate and the substrate temperature. The optical properties obtained by photoluminescence are discussed in the frame of the double-band anticrossing model. The growth conditions define two sets of different parameters for the energy level and the coupling interaction potential of N, which must be taken into account in the search for the optimum compositions 1?1.15-eV photonic applications.
International
Si
JCR
Si
Title
Nanoscale Research Letters
ISBN
1556-276X
Impact factor JCR
2,584
Impact info
Datos JCR del año 2015
Volume
12
10.1186/s11671-017-2129-2
Journal number
From page
356:1
To page
356:10
Month
SIN MES
Ranking
Participants
  • Autor: Verónica Braza (UCA)
  • Autor: Daniel F. Reyes (UCA)
  • Autor: Alicia Gonzalo Martin (UPM)
  • Autor: Antonio David Utrilla Lomas (UPM)
  • Autor: Teresa Ben (UCA)
  • Autor: Jose Maria Ulloa Herrero (UPM)
  • Autor: David González (UCA)
Research Group, Departaments and Institutes related
  • Creador: Departamento: Ingeniería Electrónica
  • Departamento: Ciencia de Materiales
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)