Skip to main content Accessibility help
×
Home

Contribution of long lived metastable states to the PL of InP dots in indirect band-gap barrier layers

  • R. Seguin (a1), T. Guillet (a1), T. Taliercio (a1), P. Lefebvre (a1), T. Bretagnon (a1), X. B. Zhang (a2), J. H. Ryou (a2) and R. D. Dupuis (a2)...

Abstract

We report continuous wave and time resolved photoluminescence studies of self-assembled InP quantum dots grown by metalorganic chemical vapor deposition. The quantum dots are embedded into indirect band-gap In0.5Al0.5P layers or In0.5Al0.3Ga0.2P layers with a conduction band line-up close to the direct-to-indirect crossover. As revealed by photoluminescence spectra, efficient interdiffusion of species from the barrier layers produces (Al,In)P or (Al,Ga,In)P-dots. This interdiffusion creates potential barriers that are repulsive for electrons of X valleys around the QDs. Both samples show a fast exponential decay component with a time constant between 0.5 and 0.7 ns. In addition, the sample with indirect band gap matrix shows a slow non-exponential time-decay, which is still visible after more than 100 µs. The fast component is attributed to direct recombination of electron-hole pairs in the dots whilst the slow component, which follows a power law t −0.75 results from recombination of holes in the dots and electrons in metastable states around the dots.

Copyright

Corresponding author

References

Hide All
[1] Arakawa, Y., Sakaki, H., Appl. Phys. Lett. 40, 939 (1982)
[2] Asada, M., Miyamoto, Q., Suematsu, Y., IEEE J. Quantum Electron. 22, 1915 (1986)
[3] Persson, J., Holm, M., Pryor, C., Hessman, D., Seifert, W., Samuelson, L., Pistol, M.-E., Phys. Rev. B 67, 035320 (2003), other works from Lund Univ.
[4] Hatami, F., Masselink, W.T., Schrottke, L., Tomm, J.W., Talalaev, V., Kristukat, C., Goñ, A.R., Phys. Rev. B 67, 085306-1 (2003)
[5] Ryou, J.H., Dupuis, R.D., Walter, G., Kellogg, D.A., Holonyak, N., Mathes, D.T., Hull, R., Reddy, C.V., Narayanamurti, V., Appl. Phys. Lett. 78, 4091 (2001)
[6] Vurgaftman, I., Meyer, J.R., Ram-Mohan, L.R., Appl. Phys. Rev. 89, 5815 (2001)
[7] Zhang, X.B., Heller, R.D., Noh, M.S., Dupuis, R.D., Walter, G., Holonyak, N., Appl. Phys. Lett. 83, 1349 (2003)
[8] Ryou, J.H., Dupuis, R.D., Walter, G., Holonyak, N., Mathes, D.T., Hull, R., Reddy, C.V., Narayanamurti, V., J. Appl. Phys. 91, 5313 (2002)
[9] Leyronas, X., Combescot, M., Solid State Commun. 119, 631 (2001)
[10] Zwiller, V. et al., Phys. Rev. B 59, 5021 (1999)
[11] Bellessa, J., Voliotis, M., Grousson, R., Wang, X.L., Ogura, M., Matsuhata, H., Phys. Rev. B 58, 9933 (1998)
[12] Rosenblatt, G.H., Rowe, M.W., Williams Jr, G.P.., R.T. Williams, Y. Chen, Phys. Rev. B 39, 10309 (1989)
[13] Dawson, P., Ma, Z., Pierz, K., Göbel, E.O., Appl. Phys. Lett. 81, 2349 (2002)
[14] M.E.J. Newman, Condensed Matter, abstract, e-print arXiv:cond-mat/0412004
[15] Thomas, D.G., Hopfield, J.J., Augustyniak, W.M., Phys. Rev. A 140, A202 (1965)
[16] Higashi, G.S., Kastner, M., Phys. Rev. B 24, 2295 (1981)
[17] H. Schneider, B. Dischler, C. Wild, P. Koidl, Phys. Rev. B 51, 16 677 (1995)
[18] Reshchikov, M.A., Morkoç, H., Park, S.S., Lee, K.Y., Appl. Phys. Lett. 78, 2882 (2001)
[19] Avouris, P., Morgan, T.N., J. Chem. Phys. 74, 4347 (1981)
[20] Shimakawa, K., Phys. Rev. B 31, 4012 (1985)
[21] Wilson, B.A., Hu, P., Jedju, T.M., Harbison, J.P., Phys. Rev. B 28, 5901 (1983)
[22] Zhang, X.B., Ryou, J.H., Dupuis, R.D., Walter, G., Holonyak, N., J. Appl. Phys. 98, 063501 (2005)

Keywords

Related content

Powered by UNSILO

Contribution of long lived metastable states to the PL of InP dots in indirect band-gap barrier layers

  • R. Seguin (a1), T. Guillet (a1), T. Taliercio (a1), P. Lefebvre (a1), T. Bretagnon (a1), X. B. Zhang (a2), J. H. Ryou (a2) and R. D. Dupuis (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.