Takashi Sekiguchi Nano Device Characterization Group National Institute for Materials Science (NIMS) Biography Publications Institution JoVE Articles Takashi Sekiguchi has not added a biography. If you are Takashi Sekiguchi and would like to personalize this page please email our Author Liaison for assistance. Publications A Quasi-Solid State DSSC with 10.1% Efficiency Through Molecular Design of the Charge-Separation and -Transport Scientific Reports. Jun, 2016 | Pubmed ID: 27311604 Prevention of Thermal- and Moisture-induced Degradation of the Photoluminescence Properties of the Sr2Si5N8:Eu(2+) Red Phosphor by Thermal Post-treatment in N2-H2 Physical Chemistry Chemical Physics : PCCP. May, 2016 | Pubmed ID: 27086764 Arbitrary Cross-section SEM-cathodoluminescence Imaging of Growth Sectors and Local Carrier Concentrations Within Micro-sampled Semiconductor Nanorods Nature Communications. Feb, 2016 | Pubmed ID: 26881966 Solubility and Crystallographic Facet Tailoring of (GaN)(1-x)(ZnO)(x) Pseudobinary Solid-solution Nanostructures As Promising Photocatalysts Nanoscale. Feb, 2016 | Pubmed ID: 26815407 Enhanced Light Emission Due to Formation of Semi-polar InGaN/GaN Multi-quantum Wells Nanoscale Research Letters. Dec, 2015 | Pubmed ID: 26625883 Synthesis and Crystal Structures of BaLaSi2 with Cis-trans Si Chains and Ba5LaSi6 with Pentagonal Si Rings Inorganic Chemistry. Sep, 2015 | Pubmed ID: 26334192 Strong Energy-Transfer-Induced Enhancement of Luminescence Efficiency of Eu(2+)- and Mn(2+)-Codoped Gamma-AlON for Near-UV-LED-Pumped Solid State Lighting Inorganic Chemistry. Jun, 2015 | Pubmed ID: 25993116 Helical Growth of Aluminum Nitride: New Insights into Its Growth Habit from Nanostructures to Single Crystals Scientific Reports. May, 2015 | Pubmed ID: 25976071 Band-gap Deformation Potential and Elasticity Limit of Semiconductor Free-standing Nanorods Characterized in Situ by Scanning Electron Microscope-cathodoluminescence Nanospectroscopy ACS Nano. Mar, 2015 | Pubmed ID: 25689728 Cathodoluminescence and Photoconductive Characteristics of Single-crystal Ternary CdS/CdSe/CdS Biaxial Nanobelts Small (Weinheim an Der Bergstrasse, Germany). Apr, 2015 | Pubmed ID: 25384889 Origin of Yellow-band Emission in Epitaxially Grown GaN Nanowire Arrays ACS Applied Materials & Interfaces. Aug, 2014 | Pubmed ID: 25057903 Cheap, Gram-scale Fabrication of BN Nanosheets Via Substitution Reaction of Graphite Powders and Their Use for Mechanical Reinforcement of Polymers Scientific Reports. Feb, 2014 | Pubmed ID: 24572725 Active Vitamin D Analogs, Maxacalcitol and Alfacalcidol, As Maintenance Therapy for Mild Secondary Hyperparathyroidism in Hemodialysis Patients - a Randomized Study International Journal of Clinical Pharmacology and Therapeutics. May, 2014 | Pubmed ID: 24569127 A Novel and High Brightness AlN:Mn2+ Red Phosphor for Field Emission Displays Dalton Transactions (Cambridge, England : 2003). Apr, 2014 | Pubmed ID: 24526132 Local Electrical Properties of N-AlInAs/i-GaInAs Electron Channel Structures Characterized by the Probe-electron-beam-induced Current Technique Microscopy (Oxford, England). Apr, 2014 | Pubmed ID: 24363442 A Multilevel Intermediate-band Solar Cell by InGaN/GaN Quantum Dots with a Strain-modulated Structure Advanced Materials (Deerfield Beach, Fla.). Mar, 2014 | Pubmed ID: 24310932 Synthesis, Microstructure, and Cathodoluminescence of [0001]-oriented GaN Nanorods Grown on Conductive Graphite Substrate ACS Applied Materials & Interfaces. Nov, 2013 | Pubmed ID: 24164686 Solid Solution, Phase Separation, and Cathodoluminescence of GaP-ZnS Nanostructures ACS Applied Materials & Interfaces. Sep, 2013 | Pubmed ID: 23981108 Triangular ZnO Nanosheets: Synthesis, Crystallography and Cathodoluminescence Journal of Nanoscience and Nanotechnology. Aug, 2013 | Pubmed ID: 23882828 Characterization of Impurity Doping and Stress in Si/Ge and Ge/Si Core-shell Nanowires ACS Nano. Oct, 2012 | Pubmed ID: 22947081 High-yield Boron Nitride Nanosheets from 'chemical Blowing': Towards Practical Applications in Polymer Composites Journal of Physics. Condensed Matter : an Institute of Physics Journal. Aug, 2012 | Pubmed ID: 22820508 Evaluation of Defects Generation in Crystalline Silicon Ingot Grown by Cast Technique with Seed Crystal for Solar Cells Journal of Applied Physics. Apr, 2012 | Pubmed ID: 22536006 Bulk Synthesis, Growth Mechanism and Properties of Highly Pure Ultrafine Boron Nitride Nanotubes with Diameters of Sub-10 Nm Nanotechnology. Apr, 2011 | Pubmed ID: 21346299 Segregation Behaviors and Radial Distribution of Dopant Atoms in Silicon Nanowires Nano Letters. Feb, 2011 | Pubmed ID: 21261289 Spatially Resolved Cathodoluminescence of Individual BN-coated CaS:Eu Nanowires Nanoscale. Feb, 2011 | Pubmed ID: 21082087 Paraneoplastic Neurological Syndrome in a Patient with Gastric Cancer Gastric Cancer : Official Journal of the International Gastric Cancer Association and the Japanese Gastric Cancer Association. Aug, 2010 | Pubmed ID: 20820991 Enhancement of the Core Near-band-edge Emission Induced by an Amorphous Shell in Coaxial One-dimensional Nanostructure: the Case of SiC/SiO2 Core/shell Self-organized Nanowires Nanotechnology. Aug, 2010 | Pubmed ID: 20683139 Effect of Size-Dependent Thermal Instability on Synthesis of Zn2 SiO4-SiOx Core-Shell Nanotube Arrays and Their Cathodoluminescence Properties Nanoscale Research Letters. Feb, 2010 | Pubmed ID: 20672064 Unipolar Assembly of Zinc Oxide Rods Manifesting Polarity-driven Collective Luminescence Proceedings of the National Academy of Sciences of the United States of America. Aug, 2010 | Pubmed ID: 20643960 Doping and Raman Characterization of Boron and Phosphorus Atoms in Germanium Nanowires ACS Nano. Jul, 2010 | Pubmed ID: 20565120 ZnS Branched Architectures As Optoelectronic Devices and Field Emitters Advanced Materials (Deerfield Beach, Fla.). Jun, 2010 | Pubmed ID: 20432475 352 Nm Ultraviolet Emission from High-quality Crystalline AlN Whiskers Nanotechnology. Feb, 2010 | Pubmed ID: 20090196 Unpredicted Nucleation of Extended Zinc Blende Phases in Wurtzite ZnO Nanotetrapod Arms ACS Nano. Oct, 2009 | Pubmed ID: 19739604 The Synthesis, Structure and Cathodoluminescence of Ellipsoid-shaped ZnGa2O4 Nanorods Nanotechnology. Sep, 2009 | Pubmed ID: 19687548 Thin-walled Boron Nitride Microtubes Exhibiting Intense Band-edge UV Emission at Room Temperature Nanotechnology. Feb, 2009 | Pubmed ID: 19417466 Sharing of Secondary Electrons by In-lens and Out-lens Detector in Low-voltage Scanning Electron Microscope Equipped with Immersion Lens Ultramicroscopy. Mar, 2009 | Pubmed ID: 19246156 Novel Boron Nitride Hollow Nanoribbons ACS Nano. Oct, 2008 | Pubmed ID: 19206466 Self-assembly and Cathodoluminescence of Microbelts from Cu-doped Boron Nitride Nanotubes ACS Nano. Aug, 2008 | Pubmed ID: 19206355 Structure and Cathodoluminescence of Individual ZnS/ZnO Biaxial Nanobelt Heterostructures Nano Letters. Sep, 2008 | Pubmed ID: 18687012 Isotope Effect on Band Gap and Radiative Transitions Properties of Boron Nitride Nanotubes Nano Letters. Feb, 2008 | Pubmed ID: 18173295 Electron Beam Nanoprocessing of a Carbon Nanotube Film Using a Variable Pressure Scanning Electron Microscope Journal of Nanoscience and Nanotechnology. Jul, 2007 | Pubmed ID: 17663252 Photoinduced Charge Injection and Bandgap-engineering of High-specific-surface-area BN Nanotubes Using a Zinc Phthalocyanine Monolayer Small (Weinheim an Der Bergstrasse, Germany). Aug, 2007 | Pubmed ID: 17583890 Single-crystal Nanotubes of II3-V2 Semiconductors Angewandte Chemie (International Ed. in English). Nov, 2006 | Pubmed ID: 17051570 Low-temperature Growth of Uniform ZnO Particles with Controllable Ellipsoidal Morphologies and Characteristic Luminescence Patterns The Journal of Physical Chemistry. B. Oct, 2006 | Pubmed ID: 17004762 Precise Fabrication of Point Defects in Self-assembled Three-dimensional Macroporous Photonic Crystals The Journal of Physical Chemistry. B. Jan, 2006 | Pubmed ID: 16471650 Aligned Zn-Zn2SiO4 Core-shell Nanocables with Homogeneously Intense Ultraviolet Emission at 300 Nm The Journal of Physical Chemistry. B. Aug, 2005 | Pubmed ID: 16853004 Hollow and Polygonous Microtubes of Monocrystalline Indium Germanate Angewandte Chemie (International Ed. in English). Dec, 2005 | Pubmed ID: 16315330 Porous BCN Nanotubular Fibers: Growth and Spatially Resolved Cathodoluminescence Journal of the American Chemical Society. Nov, 2005 | Pubmed ID: 16305196 Perfectly Dissolved Boron Nitride Nanotubes Due to Polymer Wrapping Journal of the American Chemical Society. Nov, 2005 | Pubmed ID: 16287265 Cathodoluminescence Investigation of Organic Materials Journal of Electron Microscopy. Aug, 2005 | Pubmed ID: 16123064 New Sesquiterpenoid from the New Zealand Liverwort Lepidozia Spinosissima Natural Product Research. Oct, 2005 | Pubmed ID: 16076638 New Boron Nitride Whiskers: Showing Strong Ultraviolet and Visible Light Luminescence The Journal of Physical Chemistry. B. May, 2004 | Pubmed ID: 18950100 Cathodoluminescence Imaging for Identifying Uptaken Fluorescence Materials in Kupffer Cells Using Scanning Electron Microscopy Archives of Histology and Cytology. Sep, 2004 | Pubmed ID: 15570891 Highly Diastereoselective Reductive Coupling of 2-bromo-2,3,3,3-tetrafluoropropanamide with Aldehydes Promoted by Triphenylphosphine-titanium(IV) Isopropoxide. An Efficient Route to the Synthesis of Erythro-alpha-fluoro-alpha-(trifluoromethyl)-beta-hydroxy Amides The Journal of Organic Chemistry. Jul, 2004 | Pubmed ID: 15255733 Observation of Polarization Property in Near-field Optical Imaging by a Polarization-maintaining Fiber Probe Journal of Electron Microscopy. 2004 | Pubmed ID: 15180218 Cathodoluminescence Study of One-dimensional Free-standing Widegap-semiconductor Nanostructures: GaN Nanotubes, Si3N4 Nanobelts and ZnS/Si Nanowires Journal of Electron Microscopy. 2004 | Pubmed ID: 15180217 Terpenoids and Aromatic Compounds from the New Zealand Liverworts Plagiochila, Schistochila, and Heteroscyphus Species Chemical & Pharmaceutical Bulletin. May, 2004 | Pubmed ID: 15133207 Uniform Micro-sized Alpha- and Beta-Si3N4 Thin Ribbons Grown by a High-temperature Thermal-decomposition/nitridation Route Chemistry (Weinheim an Der Bergstrasse, Germany). Jan, 2004 | Pubmed ID: 14735524 Synthesis of Crystalline Silicon Tubular Nanostructures with ZnS Nanowires As Removable Templates Angewandte Chemie (International Ed. in English). Jan, 2004 | Pubmed ID: 14694472 Epitaxial Heterostructures: Side-to-side Si-ZnS, Si-ZnSe Biaxial Nanowires, and Sandwichlike ZnS-Si-ZnS Triaxial Nanowires Journal of the American Chemical Society. Sep, 2003 | Pubmed ID: 16220953 Cathodoluminescence Study of AlGaAs/GaAs Multilayers Grown on Ridge-type Triangles on GaAs (111)A Substrates Journal of Electron Microscopy. 2003 | Pubmed ID: 14599100 Cutting Edge: A Possible Role for CD4+ Thymic Macrophages As Professional Scavengers of Apoptotic Thymocytes Journal of Immunology (Baltimore, Md. : 1950). Sep, 2003 | Pubmed ID: 12960296 Targeted Disruption of Oncostatin M Receptor Results in Altered Hematopoiesis Blood. Nov, 2003 | Pubmed ID: 12855584 A Stable Quasi-solid-state Dye-sensitized Solar Cell with an Amphiphilic Ruthenium Sensitizer and Polymer Gel Electrolyte Nature Materials. Jun, 2003 | Pubmed ID: 12754500 Macrophage Colony Stimulating Factor Modulates the Development of Hematopoiesis by Stimulating the Differentiation of Endothelial Cells in the AGM Region Blood. Apr, 2002 | Pubmed ID: 11895768 Cultivation of Aorta-gonad-mesonephros-derived Hematopoietic Stem Cells in the Fetal Liver Microenvironment Amplifies Long-term Repopulating Activity and Enhances Engraftment to the Bone Marrow Blood. Feb, 2002 | Pubmed ID: 11830465 Low-energy Cathodoluminescence for (Oxy)Nitride Phosphors Yujin Cho1,3, Benjamin Dierre2, Takashi Sekiguchi3, Takayuki Suehiro4, Kohsei Takahashi4, Takashi Takeda4, Rong-Jun Xie4, Yoshinobu Yamamoto4, Naoto Hirosaki4 1Graduate School of Pure and Applied Science, University of Tsukuba, 2CNRS — Saint-Gobain, UMI 3629, Laboratory for Innovative Key Materials and Structures (LINK), 3Nano Device Characterization Group, National Institute for Materials Science (NIMS), 4Sialon Unit, National Institute for Materials Science (NIMS) JoVE 54249 Chimie
Low-energy Cathodoluminescence for (Oxy)Nitride Phosphors Yujin Cho1,3, Benjamin Dierre2, Takashi Sekiguchi3, Takayuki Suehiro4, Kohsei Takahashi4, Takashi Takeda4, Rong-Jun Xie4, Yoshinobu Yamamoto4, Naoto Hirosaki4 1Graduate School of Pure and Applied Science, University of Tsukuba, 2CNRS — Saint-Gobain, UMI 3629, Laboratory for Innovative Key Materials and Structures (LINK), 3Nano Device Characterization Group, National Institute for Materials Science (NIMS), 4Sialon Unit, National Institute for Materials Science (NIMS) JoVE 54249 Chimie