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Comparative optical study of GaAs1−xNx/GaAs and BxGa1−xAs/GaAs epilayers

Comparative optical study of GaAs1−xNx/GaAs and BxGa1−xAs/GaAs epilayers

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Optical studies of GaAs1−xNx/GaAs and BxGa1−xAs/GaAs epilayers grown by metal organic chemical vapour deposition (MOCVD), with various nitrogen (N) and boron (B) compositions, have been achieved by photoluminescence spectroscopy (PL) as a function of the excitation density and the sample temperature (10–300 K). The experiments have shown that the GaAsN PL band emission presents a more significant red shift than the BGaAs emission. For the GaAsN a reduction of 110 meV/1%N is shown, but for the BGaAs the PL band emission shifts to the low-energy side by up to 2.5%. A more significant blue shift of the PL bands with increasing the excitation density has been observed for GaAsN compared to BGaAs epilayer structures. The temperature dependence of the PL peak energy has shown S-shaped behaviour for both structures, but the localisation effects are more important in GaAsN than in BGaAs. Based on these experimental results, it is shown that B incorporation does not cause large modification of the band structure in BxGa1−xAs alloys compared to pure GaAsN structures.

References

    1. 1)
      • L. Bellaiche , S. Wei , A. Zunger . Effects of atomic short range order on the electronic and optical properties of GaAsN, GaInN, and GaInAs alloys. Phys. Rev. B, Condens. Matter
    2. 2)
      • M. Weyers , M. Sato , H. Ando . Red shift of photoluminescence and Absorption in dilute GsAsN alloy layers. Jpn. J. Appl. Phys.
    3. 3)
      • D. Perkins , A. Mascarenhas , Y. Zhang , J.F. Geisz , D.J. Friedman , J.M. Chen , S.R. Kurtz . Nitrogen-activated transitions, level repulsions, and band-gap reduction In GaAs1−xNx with x<0.03. Phys. Rev. Lett.
    4. 4)
    5. 5)
    6. 6)
    7. 7)
      • I.A. Buyanova , W.M. Chen , G. Pozina , J.P. Bergman , B. Monemar , H.P. Xin , C.W. Tu . Mechanism for low temperature photoluminescence in GaAsN/GaAs structures grown by molecular-beam epitaxy. Appl. Phys. Lett.
    8. 8)
    9. 9)
    10. 10)
      • S. Francoeur , G. Sivaraman , Y. Qlu , S. Nikishin , H. Temkin . Luminescence of as-grown and thermally annealed GaAsN/GaAs. Appl. Phys. Lett.
    11. 11)
      • Y. Zhang , A. Mascarenhas , H.P. Xin , C.W. Tu . Formation of an impurity band and its quantum confinement in heavily doped GaAs:N. Phys. Rev. B, Condens. Matter
    12. 12)
    13. 13)
      • W. Shan , W. Walukiewicz , J. Wu , K.M. Yu , J.W. Ager , S.X. Li , E. Haller , J.F. Geisz , D.J. Friedman , Sarah R. Kurtz . Band gap bowing effects in BxGa1−xAs alloys. J. Appl. Phys.
    14. 14)
      • N.G. Szwacki , P. Boguslawski . GaAs:N vs GaAs:B alloys: Symmetry-induced effects. Phys. Rev. B, Condens. Matter Mater. Phys.
    15. 15)
      • V.K. Gupta , M.W. Koch , N.J. Wathing , Y. Gao , G.W. Wicks . Molecular beam epitaxial growth of BGaAs ternary compounds. J. Electron. Mater.
    16. 16)
    17. 17)
    18. 18)
    19. 19)
    20. 20)
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