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Facet-driven formation of axial and radial In(Ga)As clusters in GaAs nanowires

Publications associées (35)

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Enhanced spontaneous emission from quantum dots in short photonic crystal waveguides

Laurent Balet

We report a study of the quantum dot (QD) emission in short photonic crystal waveguides. We observe that the quantum dot photoluminescence intensity and decay rate are strongly enhanced when the emission energy is in resonance with Fabry-Perot (FP) cavity ...

2012

Scanning Tunneling Microscopy and Luminescence of Individual Nanostructures

Theresa Lutz

A detailed investigation and characterization of the local properties of individual nanoscopic structures is of great importance for the understanding of novel physical phenomena at the nanoscale as well as for the assessment of their possible use in futur ...

EPFL2011

Nanowire based heterostructures: Fundamental properties and applications

Anna Fontcuberta i Morral, Martin Heiss, Carlo Colombo

In this paper the fundamental properties of heterostructures based on semiconductor nanowires synthesized with molecular beam epitaxy are reviewed. Special focus is given on surface passivation mechanisms with radial epitaxial passivation shells. The growt ...

Spie-Int Soc Optical Engineering, Po Box 10, Bellingham, Wa 98227-0010 Usa2011

Synthesis and characterization of group II-Vi semiconductor nanowires

Holger Jens Böttcher

Semiconductor nanowires are an emerging class of nanostructures that represent attractive building blocks for nanoscale electronic and photonic devices. To the present, nanowires are synthesized on a small scale by experimentally demanding gas phase deposi ...

EPFL2010

Light control and microcavity lasers based on quantum wires integrated in photonic-crystal cavities

Kirill Atlasov

Novel light-emitting devices and micro-optical-circuit elements will rely upon understanding and control of light-matter interaction at the nanoscale. Recent advances in nanofabrication and micro-processing make it possible to develop integrable solid-stat ...

EPFL2009

We model the emission spectrum of a quantum dot embedded in a (e.g. photonic crystal) nanocavity, using a semi-classical approach to describe the matter-field interaction. We start from the simple model of a quantum dot as a two-level system, and recover t ...

V C H PUBLISHERS, SUITE 909, 220 E 23RD ST, NEW YORK, NY 10010 USA2009

Exciton localization and diffusion in low-dimensional nanostructures formed on non-planar substrates

Nicolas Moret

Quantum wells (QWs), quantum wires (QWRs) and quantum dots (QDs) are semiconductor heterostructures with nanoscopic dimensions. At this length scale, their properties are governed by quantum mechanics. The interest in these nanostructures is motivated by a ...

EPFL2008

Realization and study of InAs/GaAs quantum dot superluminescent diodes emitting at 1.3µm

Marco Rossetti

A quantum dot is a semiconductor nanostructure that confines the motion of conduction band electrons and valence band holes in all three spatial directions, thus creating fully discrete energy levels. The confinement in the InAs/GaAs material system is gen ...

EPFL2007

Efficiency and speed of photonic crystal lasers are improved by passivating InGaAs/GaAs membranes using (NH(4))S treatment. Lasers show five-fold reduction in nonradiative surface recombination rate, resulting in four-fold reduction in threshold and room-t ...

IEEE2007

Optical trapping and integration of semiconductor nanowire assemblies in water

Aleksandra Radenovic

Semiconductor nanowires have received much attention owing to their potential use as building blocks of miniaturized electrical(1), nanofluidic(2) and optical devices(3). Although chemical nanowire synthesis procedures have matured and now yield nanowires ...

Nature Publishing Group2006