Synthesis and Characterization of Colloidal InP Quantum Rods

InP nanorods and nanowires in the diameter range of 30−300 Å and 100−1000 Å in length were synthesized. For the preparation of nanorods, we used an organometallic precursor that decomposes thermally into InP and In metal particles. The latter serves as a nucleation catalyst for the growth of the sem...

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Bibliographic Details
Published inNano letters Vol. 3; no. 6; pp. 833 - 837
Main Authors Ahrenkiel, S. P, Mićić, O. I, Miedaner, A, Curtis, C. J, Nedeljković, J. M, Nozik, A. J
Format Journal Article
LanguageEnglish
Published Washington, DC American Chemical Society 01.06.2003
Subjects
Condensed matter: electronic structure, electrical, magnetic, and optical properties
Cross-disciplinary physics: materials science; rheology
Exact sciences and technology
Materials science
Nanoscale materials and structures: fabrication and characterization
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
Physics
Quantum wires
Quantum wires
Inorganic compounds
Catalysts
Organometallic compounds
Photoluminescence
Crystallinity
Experimental study
Indium
Heat treatments
Quantum size effect
Colloidal suspension
Optical properties
Indium phosphides
Crystal growth from solutions
Ultraviolet visible spectrum
Nanowires
Nanostructured materials
Nanocrystal
III-V semiconductors
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Summary:InP nanorods and nanowires in the diameter range of 30−300 Å and 100−1000 Å in length were synthesized. For the preparation of nanorods, we used an organometallic precursor that decomposes thermally into InP and In metal particles. The latter serves as a nucleation catalyst for the growth of the semiconductor. Quantum rods of zinc blende structure with a high degree of crystallinity are grown along the (111) crystallographic planes. The absorption spectrum of InP nanorods with diameter of about 30 Å and 100−300 Å in length is in the visible spectral regime, suggesting a substantial blue shift with respect to the bulk (band gap 1.35 eV) that is due to size confinement. Moreover, the Stokes shift of the emission band in the quantum rods is substantially larger than the shift in the corresponding quantum dots.
ISSN:1530-6984
1530-6992
DOI:10.1021/nl034152e