Single GaAs/GaAsP Coaxial Core−Shell Nanowire Lasers

• Published in: Nano letters Vol. 9; no. 1; pp. 112 - 116
• Main Authors: Hua, Bin, Motohisa, Junichi, Kobayashi, Yasunori, Hara, Shinjiroh, Fukui, Takashi
• Format: Journal Article
• Language: English
• Published: Washington, DC American Chemical Society 01.01.2009
• Subjects: Arsenicals - chemistry; Computer-Aided Design; Condensed matter: electronic structure, electrical, magnetic, and optical properties; Cross-disciplinary physics: materials science; rheology; Crystallization - methods; Equipment Design; Equipment Failure Analysis; Exact sciences and technology; Gallium - chemistry; Lasers; Lasers, Semiconductor; Macromolecular Substances - chemistry; Materials science; Materials Testing; Methods of nanofabrication; Molecular Conformation; Nanocrystalline materials; Nanoscale materials and structures: fabrication and characterization; Nanostructures - chemistry; Nanostructures - ultrastructure; Nanotechnology - instrumentation; Nanotechnology - methods; Optical properties and condensed-matter spectroscopy and other interactions of matter with particles and radiation; Optical properties of low-dimensional, mesoscopic, and nanoscale materials and structures; Particle Size; Physics; Quantum wires; Reproducibility of Results; Sensitivity and Specificity; Surface Properties; Gallium arsenides; Selective area; Core shell structure; Photoluminescence; Infrared spectra; III-V compound; Gallium Arsenides phosphides; Light sources; Near infrared radiation; Stimulated emission; Near infrared spectrum; MOVPE method; Resonance; Nanowires; Mirrors; Nanostructured materials; Heterostructures; Nanomaterial synthesis; III-V semiconductors
• ISSN: 1530-6984; 1530-6992
• DOI: 10.1021/nl802636b

Highly uniform GaAs/GaAsP coaxial nanowires were prepared via selective-area metal organic vapor phase epitaxy. Photoluminescence spectra from a single nanowire indicate that the obtained heterostructures can produce near-infrared (NIR) lasing under pulsed light excitation. The end facets of a single nanowire form a natural mirror surface to create an axial cavity, which realizes resonance and give stimulated emission. This study is a considerable advance toward the realization of nanowire-based NIR light sources.