Skip to main content Accessibility help

Reversible Degradation of Photoluminescence in Si/SiGe Three Dimensional Nanostructures

  • Nikhil Modi (a1), Leonid Tsybeskov (a1), David J. Lockwood (a2), Xiao Z. Wu (a2) and Jean Marc Baribeau (a2)...


We report the degradation of low temperature photoluminescence (PL) from Si/SiGe three-dimensional cluster morphology nanostructures under continuous photoexcitation. The PL intensity initially decreases slowly for about 15 minutes, and then decreases rapidly, until only ∼ 10% of the original PL intensity remains. A complete recovery of the PL requires restoring the sample temperature to ∼ 300K. We propose that a slow accumulation of charge in SiGe clusters enhances the rate of Auger recombination and results in the observed PL degradation.



Hide All
1. Tsybeskov, L. and Lockwood, D. J., Proceedings of the IEEE 97, 1284 (2009).
2. Modi, N., Tsybeskov, L., Lockwood, D. J., Wu, X. Z. and Baribeau, J.-M., 2010 MRS Fall Meeting, Boston, MA, 2010.
3. Fauchet, P. M., von Behren, J., Hirschman, K. D., Tsybeskov, L. and Duttagupta, S. P., Physica Status Solidi A 165, 3 (1998).
4. Street, R. A., Physical Review B: Solid State 17, 3984 (1978).
5. Mollot, F., Cernogora, J. and Benoit a la Guillaume, C., Journal of Non-Crystalline Solids 35-36, 939 (1980).
6. Mott, N. F. and Davis, E. A., Electronic processes in non-crsytalline materials, 2nd ed. (Oxford University Press, New York, 1979).
7. Chepic, D. I., Efros, A. L., Ekimov, A. I., Ivanov, M. G., Kharchenko, V. A., Kudriavtsev, I. A. and Yazeva, T. V., Journal of Luminescence 47, 113 (1990).
8. Taylor, P. C., Strom, U. and Bishop, S. G., Philosophical Magazine B: Physics of Condensed Matter: Statistical Mechanics, Electronic, Optical and Magnetic Properties 37, 241 (1978).
9. Lee, E.-K., Lockwood, D. J., Baribeau, J.-M., Bratkovsky, A. M., Kamins, T. I. and Tsybeskov, L., Physical Review B: Condensed Matter and Materials Physics 79, 233307 (2009).
10. Baribeau, J.-M., Wu, X., Rowell, N. L. and Lockwood, D. J., Journal of Physics: Condensed Matter 18, 36 (2006).
11. Davies, G., Physical Reports 176, 83 (1989).
12. Efros, A. L. and Rosen, M., Physical Review Letters 78, 1110 (1997).
13. Dabbousi, B. O., Rodriguez-Viejo, J., Mikulec, F. V., Heine, J. R., Mattoussi, H., Ober, R., Jensen, K. F. and Bawendi, M. G., Journal of Physical Chemistry B 101, 9463 (1997).
14. Baier, T., Mantz, U., Thonke, K., Sauer, R., Schaeffler, F. and Herzog, H.-J., Physical Review B: Condensed Matter 50, 15191 (1994).
15. Kamenev, B. V., Tsybeskov, L., Baribeau, J.-M. and Lockwood, D. J., Applied Physics Letters 84, 1293 (2004).
16. Grillot, P. N., Ringel, S. A., Fitzgerald, E. A., Watson, G. P. and Xie, Y. H., Journal of Applied Physics 77, 676 (1995).



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