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Optical and magnetic characterization of transition metal ion doped ZnO microspheres synthesized via laser ablation in air
Published in SPIE
2017
Volume: 10090
   
Abstract
We report the synthesis of transition metal doped (TM) ZnO micropsheres using doped ZnO sintered targets containing Mn 1% dopant. Transition metals are prospective materials for p type acceptor doping in ZnO. Structural and morphology study were conducted using XRD (X-ray diffraction), SEM and Raman spectroscopy. Room temperature Photoluminescence (PL) spectra of the fabricated ZnO microspheres were measured, at an excitation wavelength of 355 nm. In our study, smooth spherical shaped micro particles with different diameters ranging from ∼1 to 3 μm were grown in different substrates by using a pulsed N 3+: YAG laser. SEM (Scanning Electron Microscopy) images show the presence of uniform smooth surfaced spheres. Raman scattering measurements from the synthesised samples at 532 nm wavelength excitation provide confirms the wurtzite structure of the fabricated undoped and TM doped ZnO microsphere. The doped microspheres exhibited UV whispering gallery modes (WGM) cavity lasing by optical pumping. Magnetic measurements from TM doped ZnO microparticles using vibrating sample magnetometer (VSM) are in progress. © 2017 SPIE.
About the journal
JournalData powered by TypesetProceedings of SPIE - The International Society for Optical Engineering
PublisherData powered by TypesetSPIE
ISSN0277786X
Open AccessNo
Concepts (29)
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    Ablation
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    Doping (additives)
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    Laser ablation
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    Laser resonators
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    Manganese
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    Metal ions
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    Metals
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    Microcavities
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    Microspheres
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    Optical pumping
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    Optical resonators
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    Photoluminescence
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    Resonators
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    Scanning electron microscopy
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    Transition metal compounds
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    Transition metals
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    Whispering gallery modes
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    X ray diffraction
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    Zinc oxide
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    Zinc sulfide
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    EXCITATION WAVELENGTH
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    Magnetic characterization
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    MN-DOPING
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    Raman scattering measurements
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    ROOM TEMPERATURE PHOTOLUMINESCENCE SPECTRUMS
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    Vibrating sample magnetometer
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    WAVELENGTH EXCITATIONS
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    XRD (X RAY DIFFRACTION)
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    Pulsed lasers