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Core-shell multi-quantum wells in ZnO/ZnMgO nanowires with high optical efficiency at room temperature

Thierry, R ; Perillat-Merceroz, G ; Jouneau, P H ; Ferret, P ; Feuillet, G

Nanotechnology, 2012-03, Vol.23 (8), p.085705-085705 [Periódico revisado por pares]

England: IOP Publishing

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Título:
Core-shell multi-quantum wells in ZnO/ZnMgO nanowires with high optical efficiency at room temperature
Autor: Thierry, R ; Perillat-Merceroz, G ; Jouneau, P H ; Ferret, P ; Feuillet, G
Assuntos: Condensed Matter ; Engineering Sciences ; Heterostructures ; Macromolecular Substances - chemistry ; Magnesium ; Magnesium Oxide - chemistry ; Materials ; Materials Science ; Materials Testing ; Micro and nanotechnologies ; Microelectronics ; Molecular Conformation ; Nanocomposites ; Nanomaterials ; Nanostructure ; Nanostructures - chemistry ; Nanostructures - ultrastructure ; Nanowires ; Optics ; Particle Size ; Physics ; Porosity ; Quantum Dots ; Surface Properties ; Temperature ; Wells ; Zinc oxide ; Zinc Oxide - chemistry
É parte de: Nanotechnology, 2012-03, Vol.23 (8), p.085705-085705
Notas: ObjectType-Article-1
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Descrição: Nanowire-based light-emitting devices require multi-quantum well heterostructures with high room temperature optical efficiencies. We demonstrate that such efficiencies can be attained through the use of ZnO/Zn(1−x)MgxO core-shell quantum well heterostructures grown by metal organic vapor phase epitaxy. Varying the barrier Mg concentration from x = 0.15 to 0.3 leads to the formation of misfit induced dislocations in the multi-quantum wells. Correlatively, temperature dependent photoluminescence reveals that the radial well luminescence intensity decreases much less rapidly with increasing temperature for the lower Mg concentration. Indeed, about 54% of the 10 K intensity is retained at room temperature with x = 0.15, against 1% with x = 0.30. These results open the way to the realization of high optical efficiency nanowire-based light-emitting diodes.
Editor: England: IOP Publishing
Idioma: Inglês

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Core-shell multi-quantum wells in ZnO/ZnMgO nanowires with high optical efficiency at room temperature

Thierry, R ; Perillat-Merceroz, G ; Jouneau, P H ; Ferret, P ; Feuillet, G

England: IOP Publishing

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