InP–InxGa1−xAs core-multi-shell nanowire quantum wells with tunable emission in the 1.3–1.55 μm wavelength range

Fonseka, H. A. and Ameruddin, A. S. and Caroff, P. and Tedeschi, D. and De Luca, M. and Mura, F. and Guo, Y. and Lysevych, M. and Wang, F. and Tan, H. H. and Polimeni, A. and Jagadish, C.. (2017) InP–InxGa1−xAs core-multi-shell nanowire quantum wells with tunable emission in the 1.3–1.55 μm wavelength range. Nanoscale, 9. pp. 13554-13562.

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Official URL: https://edoc.unibas.ch/59678/

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The usability and tunability of the essential InP–InGaAs material combination in nanowire-based quantum wells (QWs) are assessed. The wurtzite phase core-multi-shell InP–InGaAs–InP nanowire QWs are characterised using cross-section transmission electron microscopy and photoluminescence measurements. The InP–InGaAs direct interface is found to be sharp while the InGaAs–InP inverted interface is more diffused, in agreement with their planar counterpart. Bright emission is observed from the single nanowires containing the QWs at room temperature, with no emission from the InP core or outer barrier. The tunability of the QW emission wavelength in the 1.3–1.55 μm communication wavelength range is demonstrated by varying the QW thickness and in the 1.3 μm range by varying the composition. The experiments are supported by simulation of the emission wavelength of the wurtzite phase InP–InGaAs QWs in the thickness range considered. The radial heterostructure is further extended to design multiple QWs with bright emission, therefore establishing the capability of this material system for nanowire based optical devices for communication applications.
Faculties and Departments:05 Faculty of Science > Departement Physik > Physik > Experimental Material Physics (Zardo)
UniBasel Contributors:De Luca, Marta
Item Type:Article, refereed
Article Subtype:Research Article
Publisher:Royal Society of Chemistry
Note:Publication type according to Uni Basel Research Database: Journal article
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Last Modified:14 Jul 2020 08:37
Deposited On:28 Feb 2018 12:57

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