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2005 | 108 | 4 | 723-729
Article title

Potential and Carrier Distribution in AlGaN Superlattice

Content
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Languages of publication
EN
Abstracts
EN
Photocurrent spectroscopy and Kelvin force microscopy have been used in order to determine charge, field, and potential distributions in spontaneously grown superlattice. The spectra show that light can generate currents and potentials in both directions depending on photon energy. A numerical model made for superlattice of periodλ_{SL} = 33 nm shows that electric field in superlattice oscillates coherently with Al content. The oscillations of electric field explain the different directions of photocurrent. The electric field can also separate electrons and holes, making carrier lifetimes longer and lowering excitation intensity threshold for occupation inversion.
Keywords
EN
Publisher

Year
Volume
108
Issue
4
Pages
723-729
Physical description
Dates
published
2005-10
received
2005-06-04
Contributors
author
  • Institute of Experimental Physics, Warsaw University, Hoża 69, 00-681 Warsaw, Poland
author
  • Institute of Experimental Physics, Warsaw University, Hoża 69, 00-681 Warsaw, Poland
author
  • Institute of Experimental Physics, Warsaw University, Hoża 69, 00-681 Warsaw, Poland
author
  • Institute of Experimental Physics, Warsaw University, Hoża 69, 00-681 Warsaw, Poland
author
  • Institute of Experimental Physics, Warsaw University, Hoża 69, 00-681 Warsaw, Poland
  • Institute of Experimental Physics, Warsaw University, Hoża 69, 00-681 Warsaw, Poland
  • Institute of Experimental Physics, Warsaw University, Hoża 69, 00-681 Warsaw, Poland
author
  • Institute of Experimental Physics, Warsaw University, Hoża 69, 00-681 Warsaw, Poland
References
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  • 2. A. Drabińska, K.P. Korona, R. Bozek, J.M. Baranowski, K. Pakula, T. Tomaszewicz, Phys. Status Solidi C, 0, 329, 2003
  • 3. D. Jena, S. Heikman, J.S. Speck, A. Gossard, U.K. Mishra, A. Link, O. Ambacher, Phys. Rev. B, 67, 153306, 2003
  • 4. K. Pakula, R. Bozek, J.M. Baranowski, J. Jasinski, Phys. Status Solidi C, 2, 1073, 2005
  • 5. E.V. Kalashnikov, V.I. Nikolaev, MRS Internet J. Nitride Semicond. Res., 2, a.3, 1997
  • 6. G.F. Neumark, Phys. Rev. Lett., 62, 1800, 89
  • 7. M.P. Mack, A. Abare, M. Aizcorbe, P. Kozodoy, S. Keller, U.K. Mishra, L. Coldren, S. DenBaars, MRS Internet J. Nitride Semicond. Res., 2, a.41, 1997
  • 8. K.P. Korona, A. Drabińska, A. Trajnerowicz, R. Bozek, K. Pakula, J.M. Baranowski, Acta Phys. Pol. A, 103, 675, 2003
Document Type
Publication order reference
Identifiers
YADDA identifier
bwmeta1.element.bwnjournal-article-appv108n418kz
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