Skip to main content Accessibility help

Status of Nitride Based Light Emitting and Laser Diodes on SiC

  • K. Doverspike (a1), G. E. Bulman (a1), S. T. Sheppard (a1), H. S. Kong (a1), M. Leonard (a1), H. Dieringer (a1), T. W. Weeks (a1), J. Edmond (a1), J. D. Brown (a2), J. T. Swindle (a2), J. F. Schetzina (a2), Y- K Song (a3), M. Kuball (a3) and A. Nurmikko (a3)...


Single crystal thin films with compositions from the A1N-InN-GaN system were grown via metal-organic chemical vapor deposition (MOCVD) on single crystal 6H-SiC substrates. Blue light emitting (LED) and laser diode (LD) structures were fabricated. The conducting buffer layer LEDs employed an AlGaN buffer layer which provides a conduction path between SiC and the active device region. The external quantum efficiency of the LEDs was 3% at 20 mA- 3.6V and peak emission wavelength of 430 nm. Violet and blue LDs were fabricated and consisted of an 8-well InGaN/GaN multiple quantum well (MQW) active region in a separate confinement heterostructure (SCH) design. Lasing was obtained both on structures using an insulating buffer layer, and also on structures using a conducting buffer layer. The resulting lasers operated at room temperature using pulsed and continuous wave operation with an emission wavelength of 404-435 rim. The lowest threshold current density obtained for lasing was 11 kA/cm2.



Hide All
1. Nakamura, S., Gallium Nitride and Related Materials, edited by F., Ponce, R., Dupuis, S., Nakamura and J., Edmond, (Mater. Res. Soc. Symp. Proc., 395, Pittsburgh,PA 1996) pp.879887.
2. Koike, M., Koide, N., Asami, S., Umezaki, J., Nagai, S. Yamasaki, S., Shibata, N., Amano, H. and Akasaki, I., Lightemitting Diodes: Research, Manufacturing, and Applications, edited by E., Fred Schubert, (Proceedings of SPIE,3002, Bellingham,WA 1997) pp3639.
3. Nakamura, S., Senoh, M., Nagahama, S., Iwasa, N., Yamada, T., Matsushita, T., Sugimoto, Y. and Kiyoku, H., Appl. Phys. Lett 69, 40564058, (1996).
4. Nakamura, S., Presented at the International Symposium on Compound Semiconductors, San Diego, CA, Sept. 1997 (unpublished).


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