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2008 | 113 | 3 | 963-966
Article title

Radiative Recombination Spectra of Heavily p-Type δ-Doped GaAs/AlAs MQWs

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EN
Abstracts
EN
We present a study of the photoluminescence properties of heavily Be δ-doped GaAs/AlAs multiple quantum wells measured at room and liquid nitrogen temperatures. Possible mechanisms for photocarriers recombination are discussed, with a particular focus on the peculiarities of the excitonic and free carriers-acceptors photoluminescence emissions occurring below and above the Mott metal-insulator transition. Moreover, based on a simple theoretical model, it is found that the critical impurities concentration to observe the Mott transition in the multiple quantum wells samples exhibiting 15 nm wells width and 5 nm thick barrier layers is ≈3×10^{12} cm^{-2}.
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EN
Contributors
author
  • Semiconductor Physics Institute, A. Goštauto 11, LT-01108 Vilnius, Lithuania
  • Gediminas' Technical University of Vilnius, Saulėtekio 11, LT-10223 Vilnius, Lithuania
author
  • Semiconductor Physics Institute, A. Goštauto 11, LT-01108 Vilnius, Lithuania
author
  • Semiconductor Physics Institute, A. Goštauto 11, LT-01108 Vilnius, Lithuania
author
  • Institute of Microwave and Photonics, University of Leeds, Leeds LS2 9JT, United Kingdom
author
  • Institute of Microwave and Photonics, University of Leeds, Leeds LS2 9JT, United Kingdom
author
  • Institute of Microwave and Photonics, University of Leeds, Leeds LS2 9JT, United Kingdom
author
  • Institute of Microwave and Photonics, University of Leeds, Leeds LS2 9JT, United Kingdom
References
  • 1. Delta-doping of Semiconductors, Ed. E.F. Schubert, Cambridge University Press, New York 1996
  • 2. J.J. Harris, R. Murray, C.T. Foxon, Semicond. Sci. Technol. 8, 31 (1993)
  • 3. A. John Peter, K. Navaneethakrishnan, Physica E 16, 223 (2003)
  • 4. J. Kundrotas, A.Čerškus, S. Ašmontas, A. Johannessen, G. Valušis, B. Sherliker, M.P. Halsall, P. Harrison, M.J. Steer, Lithuanian J. Phys. 45, 201 (2005)
  • 5. N.F. Mott, Metal-insulator Transitions, Taylor & Francis Ltd, London 1974
  • 6. J. Kundrotas, A.Čerškus, S. Ašmontas, G. Valuis, B. Sherliker, M.P. Halsall, M.J. Steer, E. Johannessen, P. Harrison, Phys. Rev. B 72, 235322 (2005)
  • 7. J. Kortus, J. Monecke, Phys. Rev. B 49, 17216 (1994)
Document Type
Publication order reference
Identifiers
YADDA identifier
bwmeta1.element.bwnjournal-article-appv113n339kz
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