Skip to main content Accessibility help
×
Home

Deep levels in n-type Schottky and p+-n homojunction GaN diodes

  • A. Hierro (a1), D. Kwon (a1), S. A. Ringel (a1), M. Hansen (a2), U. K. Mishra (a2), S. P. DenBaars (a2) and J. S. Speck (a2)...

Abstract

The deep level spectra in both p+-n homojunction and n-type Schottky GaN diodes are studied by deep level transient spectroscopy (DLTS) in order to compare the role of the junction configuration on the defects found within the n-GaN layer. Both majority and minority carrier DLTS measurements are performed on the diodes allowing the observation of both electron and hole traps in n-GaN. An electron level at Ec−Et =0.58 and 0.62 V is observed in the p+-n and Schottky diodes, respectively, with a concentration of ∼3−4×1014 cm−3 and a capture cross section of ∼1−5×10−15 cm2. The similar Arrhenius behavior indicates that both emissions are related to the same defect. The shift in activation energy is correlated to the electric field enhanced-emission in the p+-n diode, where the junction barrier is much larger. The p+-n diode configuration allows the observation of a hole trap at Et−Ev =0.87 eV in the n-GaN which is very likely related to the yellow luminescence band.

  • View HTML
    • Send article to Kindle

      To send this article to your Kindle, first ensure no-reply@cambridge.org is added to your Approved Personal Document E-mail List under your Personal Document Settings on the Manage Your Content and Devices page of your Amazon account. Then enter the ‘name’ part of your Kindle email address below. Find out more about sending to your Kindle. Find out more about sending to your Kindle.

      Note you can select to send to either the @free.kindle.com or @kindle.com variations. ‘@free.kindle.com’ emails are free but can only be sent to your device when it is connected to wi-fi. ‘@kindle.com’ emails can be delivered even when you are not connected to wi-fi, but note that service fees apply.

      Find out more about the Kindle Personal Document Service.

      Deep levels in n-type Schottky and p+-n homojunction GaN diodes
      Available formats
      ×

      Send article to Dropbox

      To send this article to your Dropbox account, please select one or more formats and confirm that you agree to abide by our usage policies. If this is the first time you use this feature, you will be asked to authorise Cambridge Core to connect with your <service> account. Find out more about sending content to Dropbox.

      Deep levels in n-type Schottky and p+-n homojunction GaN diodes
      Available formats
      ×

      Send article to Google Drive

      To send this article to your Google Drive account, please select one or more formats and confirm that you agree to abide by our usage policies. If this is the first time you use this feature, you will be asked to authorise Cambridge Core to connect with your <service> account. Find out more about sending content to Google Drive.

      Deep levels in n-type Schottky and p+-n homojunction GaN diodes
      Available formats
      ×

Copyright

References

Hide All
1 . Calleja, E., Sanchez, F. J., Basak, D., Sanchez-Garcia, M. A., Muñoz, E., Izpura, I., Calle, F., Tijero, J. M. G., Sanchez-Rojas, J. L., Beaumont, B., Lorenzini, P., and Gibart, P., Phys. Rev. B 55, 4689 (1997).
2 . Hacke, P., Detchprohm, T., Hiramatsu, K., Sawaki, N., Tadatomo, K., and Miyake, K., J. Appl. Phys. 76, 304 (1994).
3 . Neugebauer, J., and Walle, C. G. Van de, Appl. Phys. Lett. 69, 503 (1996).
4 . Hacke, P., Nakayama, H., Detchprohm, T., Hiramatsu, K., Sawaki, N., Appl. Phys. Lett. 68, 1362 (1996).
5 . Hierro, A., Kwon, D., Ringel, S. A., Hansen, M., Speck, J. S., and DenBaars, S. P., submitted to Appl. Phys. Lett. (1999).
6 . Keller, B. P., Keller, S., Kapolnek, D., Jiang, W. N., Wu, Y. F., Masui, H., Wu, X., Heying, B., Speck, J. S., Mishra, U. K., and DenBaars, S. P., Journal of Electronic Materials, 24, No. 11, pp. 1707-1709, (1995).
7 . Blood, P. and Orton, J.W., The Electrical Characterization of Semiconductors: Majority Carriers and Electron States, (Academic Press, San Diego, 1992).

Metrics

Full text views

Total number of HTML views: 0
Total number of PDF views: 0 *
Loading metrics...

Abstract views

Total abstract views: 0 *
Loading metrics...

* Views captured on Cambridge Core between <date>. This data will be updated every 24 hours.

Usage data cannot currently be displayed