Skip to main content Accessibility help
×
Home

Deep Level Defects in GaN Characterized by Capacitance Transient Spectroscopies

  • W. Gütz (a1), N. M. Johnson (a1), R. A. Street (a1), H. Amano (a2) and I. Akasaki (a2)...

Abstract

Electronic defects in MOCVD-grown n-type GaN were characterized by conventional deep level transient spectroscopy (DLTS) and by photoemission capacitance transient spectroscopy (O-DLTS) performed on Schottky diodes. With DLTS two deep levels were detected with thermal activation energies for electron emission to the conduction band of 0.16 eV and 0.44 eV. With O-DLTS we demonstrate four new deep levels with optical threshold energies for electron photoemission of ∼ 0.87 eV, 0.97 eV, 1.25 eV and 1.45 eV. The O-DLTS apparatus and the measurement are discussed in detail. We also report characterization of the Au-GaN barrier height of the Schottky diode by internal photoemission.

Copyright

References

Hide All
1. Akasaki, I., Amano, H., Koide, N., Kotaki, M., K. Manabe, Physica B 185, 428, (1993)
2. Nakamura, S., Mukai, T., and Senoh, M., Appl. Phys. Lett. 64, 1687 (1994)
3. Morkoç, H., Strite, S., Gao, G.B., Lin, M.E., Sverdlov, B., and Burns, M., J. Appl. Phys. 76, 1363 (1994)
4. Chantre, A., Vincent, G., and Bois, D., Phys. Rev. B 23, 5335 (1981)
5. Götz, W., Johnson, N.M., Amano, H., and Akasaki, I., Appl. Phys. Lett. 65, 463 (1994)
6. Hacke, P., Detchprohm, T., Hiramatsu, K., and Sawaki, N., J. Appl. Phys. 76, 304 (1994)
7. Götz, W., Johnson, N.M., Street, R.A., Amano, H., and Akasaki, I., Appl. Phys. Lett. 66, 1340, (1995)
8. Johnson, N.M., Mater. Res. Soc. Symp. Proc. 69, 75 (1986)
9. Fowler, R.H., Phys. Rev. 38, 45 (1931)

Related content

Powered by UNSILO

Deep Level Defects in GaN Characterized by Capacitance Transient Spectroscopies

  • W. Gütz (a1), N. M. Johnson (a1), R. A. Street (a1), H. Amano (a2) and I. Akasaki (a2)...

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.