Piezoelectric Effects in GaN/AlGaN Multiple Quantum Wells Probed by Picosecond Time-Resolved Photoluminescence

Abstract

Piezoelectric effects in GaN/AlGaN multiple quantum wells (MQWs) have been directly probed by picosecond time-resolved photoluminescence (PL) spectroscopy. The time-resolved PL spectra of the 40 Å well MQWs reveal that the PL transition peak position is in fact blueshifted at early delay times due to the collective effects of quantum confinement of carriers, piezoelectric field, and Coulomb screening. However, the spectral peak position shifts toward lower energies as the delay time increases and becomes redshifted at longer delay times. By comparing experimental and calculation results, we have obtained a low limit of the piezoelectric field strength to be about 560 kV/cm in the 40 Å well GaN/Al0.15Ga0.85N MQWs.

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References

  1. 1.

    H. Morkoç, S. Strite, G. B. Gao, M.E. Lin, B. Sverdlov, and M. Burns, J. Appl. Phys. 76, 1363 (1994).

    Article  Google Scholar 

  2. 2.

    M. Smith, G. D. Chen, J. Y. Lin, H. X. Jiang, M. Asif Khan, and Q. Chen, Appl. Phys. Lett. 69, 2837 (1996).

    Article  Google Scholar 

  3. 3.

    M. Smith, J. Y. Lin, H. X. Jiang, A. Salvador, A. Botchkarev, W. Kim, and H. Morkoç, Appl. Phys. Lett. 69, 2453 (1996).

    Article  Google Scholar 

  4. 4.

    E. S. Jeon, V. Kozlov, Y. K. Song, A. Vertikov, M. Kuball, A. V. Nurmikko, H. Liu, C. Chen, R. S. Kern, C. P. Kuo, and M. G. Craford, Appl. Phys. Lett. 69, 4194 (1996).

    CAS  Article  Google Scholar 

  5. 5.

    T. Takeuchi, S. Sota, M. Katsuragawa, M. Komori, H. Takeuchi, H. Amano, and I. Akasaki, Jpn. J. Appi. Phys. Part 2 36, L382 (1997).

    CAS  Article  Google Scholar 

  6. 6.

    A. Hangleiter, J. S. Im, H. Kollmer, S. Heppel, J. Off, and F. Scholz, MRS Internet J. Nitride Semicond. Res. 3, 15 (1998).

    Article  Google Scholar 

  7. 7.

    Jin Seo Im, H. Kollmer, J. Off, A. Sohmer, F. Scholtz, and A. Hangleiter, Phys. Rev. B57, R9435 (1998).

    Google Scholar 

  8. 8.

    H. S. Kim, J. Y. Lin, H. X. Jiang, W. W. Chow, A. Botchkarev, and H. Morkoç, Appl. Phys. Lett. 73, 3426 (1998).

    CAS  Article  Google Scholar 

  9. 9.

    E. T. Yu, G. T. Sullivan, P. M. Asbeck, C. D. Wang, D. Qiao, and S. S. Lau, Appl. Phys. Lett. 71, 2794 (1997).

    CAS  Article  Google Scholar 

  10. 10.

    R. Gaska, T. W. Yang, A. Osinsky, A. D. Bykhovski, and M. S. Shur, Appl. Phys. Lett. 71, 3673 (1997).

    CAS  Article  Google Scholar 

  11. 11.

    E. S. Hellman, MRS Internet J. Nitride Semicond. Res. 3, 11 (1998).

    Article  Google Scholar 

  12. 12.

    G. D. Chen, M. Smith, J. Y. Lin, H. X. Jiang, S. H. Wei, M. Asif Khan, and C. J. Sun, Appl. Phys. Lett. 68, 2784 (1996).

    CAS  Article  Google Scholar 

  13. 13.

    D. C. Reynolds, D. C. Look, W. Kim, A. Özgür, A. Botchkarev, A. Salvador, H. Morkoç, and D. N. Talwar, J. Appl. Phys. 80, 594 (1996).

    CAS  Article  Google Scholar 

  14. 14.

    W. Shan, T. J. Schmidt, X. H. Yang, S. J. Hwang, J. J. Song, and B. Goldenberg, Appl. Phys. Lett. 66, 985 (1995).

    CAS  Article  Google Scholar 

  15. 15.

    K. C. Zeng, J. Y. Lin, H. X. Jiang, A. Salvador, G. Popovici, H. Tang, W. Kim, and H. Morkoç, Appl. Phys. Lett. 71, 1368 (1997).

    CAS  Article  Google Scholar 

  16. 16.

    Y. P. Varshni, Physica 34, 149 (1967).

    CAS  Article  Google Scholar 

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Correspondence to H. X. Jiang.

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Kim, H.S., Lin, Y., Jiang, H.X. et al. Piezoelectric Effects in GaN/AlGaN Multiple Quantum Wells Probed by Picosecond Time-Resolved Photoluminescence. MRS Online Proceedings Library 537, 33 (1998). https://doi.org/10.1557/PROC-537-G3.3

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