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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.
Published in:
Applied Physics Letters
(Volume:99
,
Issue:
11
)
Date of Publication: Sep 2011
- Page(s):
- 113109 - 113109-3
- ISSN :
- 0003-6951
- Digital Object Identifier :
- 10.1063/1.3630004
- Product Type:
- Journals & Magazines
- Date of Current Version :
- 19 September 2011
- Issue Date :
- Sep 2011
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