Hostname: page-component-586b7cd67f-gb8f7 Total loading time: 0 Render date: 2024-11-29T06:14:17.777Z Has data issue: false hasContentIssue false
  • English
  • Français

Multiexcitons in a Single Core-Shell Colloidal Quantum dots

Published online by Cambridge University Press:  31 January 2011

Dima Cheskis ,
Ruth Osovsky ,
Viki Kloper ,
Aldona Sashchiuk  and
Efrat Lifshitz
Dima Cheskis
Affiliation:
[email protected], Technion - Israel Institute of Technology, Schulich Faculty of Chemistry, Haifa, Israel
Ruth Osovsky
Affiliation:
[email protected], Technion - Israel Institute of Technology, Schulich Faculty of Chemistry, Haifa, Israel
Viki Kloper
Affiliation:
[email protected], Technion - Israel Institute of Technology, Schulich Faculty of Chemistry, Haifa, Israel
Aldona Sashchiuk
Affiliation:
[email protected], Technion - Israel Institute of Technology, Schulich Faculty of Chemistry, Haifa, Israel
Efrat Lifshitz
Affiliation:
[email protected], Technion - Israel Institute of Technology, Schulich Faculty of Chemistry, Haifa, Israel
Get access

Abstract

The micro-photoluminescence (μ-PL) spectra of a single CdTe/CdSe quasi- type II core-shell colloidal quantum dots (CQDs) unambiguously reveal an emission of a biexciton (2X), a triexciton (3X) and a quadraexciton (4X) under continuous-wave excitation. The CQDs were characterized by optical measurements and theoretical consideration of carrier's wavefunctions distribution of a quasi-type II core-shell structure.

Keywords

nanostructurecore/shellcolloid
Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 1207: Symposium N – Colloidal Nanoparticles for Electronic Applications — Light Emission, Detection, Photovoltaics and Transport , 2009 , 1207-N05-10
Copyright
Copyright © Materials Research Society 2010

Access options

Get access to the full version of this content by using one of the access options below. (Log in options will check for institutional or personal access. Content may require purchase if you do not have access.)

References

[1] Klimov, V. I., Ivanov, S. A., Nanda, J., Achermann, M., Bezel, I., McGuire, J. A. and Piryatinski, A., Nature 447, 441 (2007);Google Scholar
[2] Nozik, A. J., Physica E 14, 115/120 (2002);Google Scholar
[3] Anikeeva, P. O., Halpert, J. E., Bawendi, M. G. and Bulovic, V., Nano Letters 9, 2532 (2009);Google Scholar
[4] Wang, X., Ren, X., Kahen, K., Hahn, M. A., Rajeswaran, M., Maccagnano/Zacher, S., Silcox, J., Cragg, G. E., Efros, Al. L. and Krauss, T. D., Nature 459, 686 (2009);Google Scholar
[5] Frantsuzov, P., Kuno, M., Jankó, B., Marcus, R. A., Nature Phys. 4, 519 (2008);Google Scholar
[6] Osovsky, R., Cheskis, D., Kloper, V., Sashchiuk, A., Lifshitz, E., Phys. Rev. Lett. 102, 197401 (2009);Google Scholar
[7] Kloper, V., Osovsky, R., Kolny/Olesiak, J., Sashchiuk, A., Lifshitz, E., E., J. Phys. Chem. C 111, 10336 (2007);Google Scholar
[8] Osovsky, R., Kloper, V., Kolny/Olesiak, J., Sashchiuk, A., Lifshitz, E., J. Phys. Chem. C 111, 10841 (2007);Google Scholar
[9] Banyai, L., and Koch, S.W., Semiconductor Quantum Dots (World Scientific Press, Singapore, 1993);Google Scholar
[10] Brus, L., J. Chem. Phys. 80, 4403 (1984);Google Scholar
[11] Schoos, D., Mews, A., Eychmuller, A., Weller, H., Phys. Rev. B 49, 17072 (1994);Google Scholar