Growth and optical properties of CdTe quantum dots in ZnTe nanowires

Journal Article · Mon Sep 12 00:00:00 EDT 2011 · Applied Physics Letters

DOI:https://doi.org/10.1063/1.3630004· OSTI ID:22027740

Wojnar, Piotr; Janik, Elzbieta; Baczewski, Lech T; Kret, Slawomir; Karczewski, G; Wojtowicz, Tomasz ^[1]; Goryca, Mateusz; Kazimierczuk, Tomasz; Kossacki, Piotr ^[2]

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1. Institute of Physics, Polish Academy of Sciences, Al Lotnikow 32/46, 02-668 Warsaw (Poland)
2. Institute of Experimental Physics, Faculty of Physics, University of Warsaw, ul Hoza 69, 00-681 Warsaw (Poland)

We report on the formation of optically active CdTe quantum dots in ZnTe nanowires. The CdTe/ZnTe nanostructures have been grown by a gold nanocatalyst assisted molecular beam epitaxy in a vapor-liquid solid growth process. The presence of CdTe insertions in ZnTe nanowire results in the appearance of a strong photoluminescence band in the 2.0 eV-2.25 eV energy range. Spatially resolved photoluminescence measurements reveal that this broad emission consists of several sharp lines with the spectral width of about 2 meV. The large degree of linear polarization of these individual emission lines confirms their nanowire origin, whereas the zero-dimensional confinement is proved by photon correlation spectroscopy.

• OSTI ID: 22027740
• Journal Information: Applied Physics Letters, Vol. 99, Issue 11; Other Information: (c) 2011 American Institute of Physics; Country of input: International Atomic Energy Agency (IAEA); ISSN 0003-6951
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
77 NANOSCIENCE AND NANOTECHNOLOGY
CADMIUM TELLURIDES
CORRELATIONS
CRYSTAL GROWTH
EMISSION SPECTROSCOPY
EV RANGE
GOLD
MOLECULAR BEAM EPITAXY
OPTICAL PROPERTIES
PHOTOLUMINESCENCE
PHOTONS
POLARIZATION
QUANTUM DOTS
QUANTUM WIRES
SEMICONDUCTOR MATERIALS
ZINC TELLURIDES