Above and below Bandgap Excitation of Er-defect Complexes and Isolated Er in Er-implanted GaN

Abstract

Photoluminescence (PL) spectra, luminescence dynamics and luminescence saturation of the Er3+4I13/24I15/2 transition in Er-implanted GaN samples at 7K are investigated. Under below-gap excitation, different Er centers are identified. Several Er centers are clearly excited via local defects or impurities. Er-defect complexes excited by above or below bandgap light are compared. Luminescence dynamics study shows that the 4I13/2 manifold has a shorter lifetime when Er ions are part of Er-defect complexes than when Er ions are isolated from any defect. The saturation of Er luminescence is investigated for the different types of Er center corresponding to specific excitation wavelengths.

This is a preview of subscription content, access via your institution.

References

  1. 1.

    A.J. Steckl, D.S. Lee, M.J. Garter, C.C. Baker, Y. Wang and R. Jones IEEE J. of Sel. Topics in Quant. Elec., 8 (4) (2002) 749.

    CAS  Article  Google Scholar 

  2. 2.

    Rare Earth Doped Semiconductors II, in S. Coffa, A. Polman, R.N. Schwartz (Eds), Materials research Society proceedings, Vol. 422, 1996.

  3. 3.

    A. Taguchi and K. Takahei, J. of Appl. Phys., 79 (8) (1996) 4330.

    CAS  Article  Google Scholar 

  4. 4.

    A. Braud, J.L. Doualan, R. Moncorge, B. Pipeleers, A. Vantomme, Mat. Sc. Eng. B 105 (2003) to be published.

  5. 5.

    S. Kim, S.J. Rhee, D.A. Turnbull, E.E. Reuter, X. Li, J.J. Coleman and S.G. Bishop, Appl. Phys. Lett., Vol. 71(2) (1997) 231.

    CAS  Article  Google Scholar 

  6. 6.

    S. Kim, S.J. Rhee, X. Li, J.J. Coleman and S.G. Bishop,, Appl. Phys. Lett., Vol. 76(17) (2000) 2403

    CAS  Article  Google Scholar 

  7. 7.

    M. Inokuti and F. Hirayama, J. Chem. Phys, 43 (1965) 1978

    CAS  Article  Google Scholar 

  8. 8.

    M. Yokota and O. Tanimoto, J. Phys. Soc. Japan, 22 (1967) 779

    CAS  Article  Google Scholar 

Download references

Author information

Affiliations

Authors

Corresponding author

Correspondence to A. Braud.

Rights and permissions

Reprints and Permissions

About this article

Cite this article

Braud, A., Abouzaid, M., Wojdak, M. et al. Above and below Bandgap Excitation of Er-defect Complexes and Isolated Er in Er-implanted GaN. MRS Online Proceedings Library 798, 731–735 (2003). https://doi.org/10.1557/PROC-798-Y8.3

Download citation