Skip to main content Accessibility help
×
Home

Emission and X ray diffraction in AlGaAs/ InGaAs Quantum wells with embedded InAs Quantum dots

  • R. Cisneros Tamayo (a1), I.J. Gerrero Moreno (a1), A. Vivas Hernandez (a1), J.L. Casas Espinola (a2) and L. Shcherbyna (a3)...

Abstract

The photoluminescence (PL), its temperature dependence and X-ray diffraction (XRD) have been studied in MBE grown GaAs/AlGaAs/InGaAs/AlGaAs /GaAs quantum wells (QWs) with InAs quantum dots embedded in the center of InGaAs layer in the freshly prepared states and after the thermal treatments during 2 hours at 640 or 710 °C. The structures contained two buffer (Al0.3Ga0.7As/In0.15Ga0.85As) and two capping (In0.15Ga0.85As / Al0.3Ga0.7As) layers. The temperature dependences of PL peak positions have been analyzed in the temperature range 10-500K with the aim to investigate the QD composition and its variation at thermal annealing. The experimental parameters of the temperature variation of PL peak position in the InAs QDs have been compared with the known one for the bulk InAs crystals and the QD composition variation due to Ga/Al/In inter diffusion at thermal treatments has been detected. XRD have been studied with the aim to estimate the capping/buffer layer compositions in the different QW layers in freshly prepared state and after the thermal annealing. The obtained emission and XRD data and their dependences on the thermal treatment have been analyzed and discussed.

Copyright

References

Hide All
1. Bimberg, D., Grundman, M., Ledentsov, N. N., Quantum Dot Heterostructures, Ed. Wiley & Sons (2001) 328.
2. Ustinov, V. M., Maleev, N. A., Shukov, A. E., Kovsh, A. R., Egorov, A. Yu., Lunev, A. V., Volovik, B. V., Krestnikov, I. L., Musikhin, Yu. G., Bert, N. A., Kopev, P. S., Alferov, Zh.I., Ledentsov, N. N., Bimberg, D., Appl.Phys.Lett. 74, 2815 (1999).
3. Liu, G. T., Stintz, A., Li, H., Malloy, K. J. and Lester, L. F., Electron Lett, 35, 1163 (1999).
4. Stintz, A., Liu, G. T., Gray, L., Spillers, R., Delgado, S. M., Malloy, K. J., J. Vac. Sci. Technol. B. 18(3), 1496 (2000).
5. Torchynska, T. V., Casas Espínola, J. L., Velazquez Losada, E., Eliseev, P. G., Stintz, A., Malloy, K. J., Peña Sierra, R., Surface Science 532, 848 (2003).
6. Kapteyn, C. M. A., Lion, M., Heitz, R., and Bimberg, D., Brunkov, P. N., Volovik, B. V., Konnikov, S. G., Kovsh, A. R., and Ustinov, V. M., Appl. Phys. Lett. 76, 1573 (2000)
7. Dybiec, M., Ostapenko, S., Torchynska, T. V., Velasquez Losada, E., Appl. Phy. Lett. 84, 51655167 (2004).
8. Torchynska, T.V., Superlattice and Microstructure, 45, 349355 (2009).
9. Seravalli, L., Frigeri, P., Minelli, M., Allegri, P., Avanzini, V., Franchi, S., Appl. Phys. Lett. 87, 063101 (2005).
10. Torchynska, T., J. Appl. Phys., 104, 074315, n.7 (2008).
11. Torchynska, T.V., Stintz, A., J. Appl. Phys. 108, 2, 024316 (2010).
12. Torchynska, T. V., Casas Espinola, J. L., Borkovska, L. V., Ostapenko, S., Dybic, M., Polupan, O., Korsunska, N. O., Stintz, A., Eliseev, P. G., Malloy, K. J., J. Appl. Phys. 101, 024323 (2007).
13. Sanguinetti, S., Henini, M., Grassi Alessi, M., Capizzi, M., Frigeri, P., Franchi, S., Phys. Rev. B 60, 8276 (1999).
14. Le Ru, E. C., Fack, J. and Murray, R., Rhys. Rev. B. 67, 245318 (2003).
15. Bacher, G., Hartmann, C., Schweizer, H., Held, T., Mahler, G., Nickel, H., Phys. Rev. B. 47, 9545 (1993).
16. Varshni, Y. P., Physica 34, 149 (1967).
17. Landolt-Boernstein, A., Numerical Data and Functional Reationship, in: Science and Techology, Springer, Berin, v. 22 (1987) p. 118.
18. Torchynska, T.V., Vivas Hernandez, A., Polupan, G., Velazquez Lozada, E., Material Science and Engineering B. 176, 331 (2011).
19. Torchinskaya, T.V., Opto-Electronics Review, 6(2), 121 (1998).
20. Torchynska, T., Polupan, G., Conde Zelocuatecatl, F., Scherbina, E., Modern Physics Letter, 15, 593 (2001).

Keywords

Emission and X ray diffraction in AlGaAs/ InGaAs Quantum wells with embedded InAs Quantum dots

  • R. Cisneros Tamayo (a1), I.J. Gerrero Moreno (a1), A. Vivas Hernandez (a1), J.L. Casas Espinola (a2) and L. Shcherbyna (a3)...

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