Journal ArticleDOI
Room-temperature ultraviolet nanowire nanolasers
Michael H. Huang,Samuel S. Mao,Henning Feick,Haoquan Yan,Yiying Wu,Hannes Kind,Eicke R. Weber,Richard E. Russo,Peidong Yang,Peidong Yang +9 more
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TLDR
Room-temperature ultraviolet lasing in semiconductor nanowire arrays has been demonstrated and self-organized, <0001> oriented zinc oxide nanowires grown on sapphire substrates were synthesized with a simple vapor transport and condensation process.Abstract:
Room-temperature ultraviolet lasing in semiconductor nanowire arrays has been demonstrated The self-organized, oriented zinc oxide nanowires grown on sapphire substrates were synthesized with a simple vapor transport and condensation process These wide band-gap semiconductor nanowires form natural laser cavities with diameters varying from 20 to 150 nanometers and lengths up to 10 micrometers Under optical excitation, surface-emitting lasing action was observed at 385 nanometers, with an emission linewidth less than 03 nanometer The chemical flexibility and the one-dimensionality of the nanowires make them ideal miniaturized laser light sources These short-wavelength nanolasers could have myriad applications, including optical computing, information storage, and microanalysisread more
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Zinc oxide nanostructures: morphology derivation and evolution.
TL;DR: The systematic investigation of the morphology evolution characteristics of ZnO nanostructures from dense rods to dense nanoplatelets, nanoplatelet flowers, dense nanobelt flowers, and nanowire flowers in an evaporation-physical transport-condensation approach finds gas-phase supersaturation and surface energy of the growing surface planes are found to be determining factors.
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Ag-deposited silica-coated Fe3O4 magnetic nanoparticles catalyzed reduction of p-nitrophenol
TL;DR: In this article, a novel approach was successfully developed for advanced catalyst Ag-deposited silica-coated Fe 3 O 4 magnetic nanoparticles, which possess a silica coated magnetic core and growth active silver nanoparticles on the outer shell using n-butylamine as the reductant of AgNO 3 in ethanol.
Journal ArticleDOI
Metal halide perovskite nanomaterials: synthesis and applications
TL;DR: The different synthesis approaches and growth mechanisms of metal halide perovskites will be discussed along with their novel characteristics and applications.
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ZnO hollow-sphere nanofilm-based high-performance and low-cost photodetector.
TL;DR: The first high-performance ZnO hollow-sphere nanofilm-based photodetector is constructed by 'water-oil interfacial self-assembly' of polystyrene (PS)/ZnO core/shell nanospheres and subsequent thermal treatment.
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Random laser action in ZnO nanorod arrays embedded in ZnO epilayers
TL;DR: In this article, random laser action with coherent feedback has been observed in ZnO nanorod arrays embedded in epilayers and the dependence of the lasing threshold intensity on the excitation area is shown in good agreement with the random laser theory.
References
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Journal ArticleDOI
Indium phosphide nanowires as building blocks for nanoscale electronic and optoelectronic devices
TL;DR: The assembly of functional nanoscale devices from indium phosphide nanowires, the electrical properties of which are controlled by selective doping are reported, and electric-field-directed assembly can be used to create highly integrated device arrays from nanowire building blocks.
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Catalytic Growth of Zinc Oxide Nanowires by Vapor Transport
TL;DR: In this paper, the capacitance matrix was calculated for different chain lengths using the software package FastCap MIT (1992) and a ligand shell dielectric constant of 3.14 aF.
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Optical gain and stimulated emission in nanocrystal quantum dots.
Victor I. Klimov,Alexander Mikhailovsky,S. Xu,Anton V. Malko,Jennifer A. Hollingsworth,C. A. Leatherdale,H.-J. Eisler,Moungi G. Bawendi +7 more
TL;DR: In this article, the authors examined the competing dynamical processes involved in optical amplification and lasing in nanocrystal quantum dots and found that, despite a highly efficient intrinsic nonradiative Auger recombination, large optical gain can be developed at the wavelength of the emitting transition for close-packed solids of these dots.
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Optical gain in silicon nanocrystals
TL;DR: It is demonstrated that light amplification is possible using silicon itself, in the form of quantum dots dispersed in a silicon dioxide matrix, which opens a route to the fabrication of a silicon laser.
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Optically pumped lasing of ZnO at room temperature
TL;DR: In this paper, the authors reported the observation of optically pumped lasing in ZnO at room temperature using a plasma-enhanced molecular beam epitaxy on sapphire substrates.