Photoluminescence and time-resolved photoluminescence studies of lateral carriers transfer among InAs/GaAs quantum dots

  • Z. Zaaboub
  • F. Hassen
  • M. Naffouti
  • X. Marie
  • R. M’ghaieth
  • H. Maaref
Part of the following topical collections:
  1. Photonic Science and Engineering on the Micro/Nano Scale


We report on the lateral transfer and thermal escape of carriers in InAs quantum dots (QDs) grown on a GaAs substrate by solid source molecular beam epitaxy by mean of photoluminescence (PL) and time-resolved PL measurements. The temperature-dependent PL spectra are discussed in terms of the inhomogeneous size distribution of the QDs and the carrier tunneling process from small to large QDs. The dependence of the photoluminescence decay time on the emission-wavelength is attributed to lateral carriers’ transfer within QDs with an interdot carrier tunneling time of 910 ps under low excitation conditions.


Quantum dots Tunneling Photoluminescence Time resolved photoluminescence 


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Copyright information

© Springer Science+Business Media New York 2017

Authors and Affiliations

  • Z. Zaaboub
    • 1
  • F. Hassen
    • 1
    • 2
  • M. Naffouti
    • 1
  • X. Marie
    • 3
  • R. M’ghaieth
    • 1
  • H. Maaref
    • 1
  1. 1.Laboratoire de Micro-Optoélectronique et Nanostructures, Faculté des Sciences de MonastirUniversité de MonastirMonastirTunisia
  2. 2.Department of Physics, College of ScienceKing Khalid University of ABHA, Al-Guraigar AbhaAbhaKingdom of Saudi Arabia
  3. 3.LPCNO, INSA de ToulouseUniversité-Paul Sabatier de Toulouse-IIIToulouseFrance

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