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Abstracts
In this work we present the band gap engineering, epitaxial growth and optical characterization of CdSe/Cd_{0.9}Mg_{0.1}Se and Cd_{0.9}Mg_{0.1}Se/Cd_{0.85}Mg_{0.15}Se quantum wells with a thickness ranging from 1 to 15 nm. These structures exhibit strong near-band-gap photoluminescence from helium up to room temperature. The emission energy is tuned in the range from 1.74 to 2.1 eV at 7 K, depending on the thickness and well composition. The most intense photoluminescence (both at 7 and 300 K) was observed for 10 nm thick CdSe/Cd_{0.9}Mg_{0.1}Se wells. Such a structure gives also a sharp emission line (FWHM = 20 meV) at low temperature. The presented quantum wells are well suited for being embedded in lattice matched ZnTe based microcavities.
Discipline
- 81.07.-b: Nanoscale materials and structures: fabrication and characterization(for structure of nanoscale materials, see 61.46.-w; for nanostructured materials in electrochemistry, see 82.45.Yz; see also 62.23.-c Structural classes of nanoscale systems in mechanical properties of condensed matter)
- 81.05.Dz: II-VI semiconductors
- 78.20.-e: Optical properties of bulk materials and thin films(for optical properties related to materials treatment, see 81.40.Tv; for optical materials, see 42.70-a; for optical properties of superconductors, see 74.25.Gz; for optical properties of rocks and minerals, see 91.60.Mk; for optical properties of specific thin films, see 78.66.-w)
Journal
Year
Volume
Issue
Pages
1167-1170
Physical description
Dates
published
2014-11
Contributors
author
- Institute of Experimental Physics, Faculty of Physics, University of Warsaw, Hoża 69, 02-681 Warszawa, Poland
author
- Institute of Experimental Physics, Faculty of Physics, University of Warsaw, Hoża 69, 02-681 Warszawa, Poland
author
- Institute of Experimental Physics, Faculty of Physics, University of Warsaw, Hoża 69, 02-681 Warszawa, Poland
author
- Institute of Experimental Physics, Faculty of Physics, University of Warsaw, Hoża 69, 02-681 Warszawa, Poland
author
- Institute of Experimental Physics, Faculty of Physics, University of Warsaw, Hoża 69, 02-681 Warszawa, Poland
author
- Institute of Experimental Physics, Faculty of Physics, University of Warsaw, Hoża 69, 02-681 Warszawa, Poland
author
- Institute of Experimental Physics, Faculty of Physics, University of Warsaw, Hoża 69, 02-681 Warszawa, Poland
References
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Document Type
Publication order reference
Identifiers
YADDA identifier
bwmeta1.element.bwnjournal-article-appv126n533kz