Catalyst-Free Growth of High-Quality ZnO Nanorods on Si(100) Substrate by Two-Step, Off-Axis Pulsed-Laser Deposition
スポンサーリンク
概要
- 論文の詳細を見る
We demonstrate the growth of ZnO nanorods on a Si(100) substrate through a two-step process, annealing and off-axis pulsed laser deposition (PLD), without a catalyst. ZnO powder was first dispersed on the Si substrate, and annealed to form seeds for ZnO nanorod growth for 2.5 h. In the second step, ZnO was deposited on the seeds by PLD for 1 h. It was experimentally confirmed that the surface morphology after annealing acts as growth nuclei of nanorods. Controlling growth parameters during deposition enables the adjustment of the sizes of nanorods, namely, diameter and length. The diameters of the grown nanorods are 50–700 nm and the lengths are 2–10 μm. Cathode luminescence (CL) spectra were used to evaluate the states of defects within the ZnO nanorods. According to the CL measurement results, the thinnest nanorod arrays were found to have fewer defects, and more defects were introduced as nanorods became thicker.
- 2008-06-25
著者
-
Obara Minoru
Department Of Electrical Engineering Faculty Of Engineering Keio University
-
Saiki Toshiharu
Department Of Applied Physics University Of Tokyo
-
Saiki Toshiharu
Department of Electronics and Electrical Engineering, Keio University, 3-14-1 Hiyoshi, Kohoku-ku, Yokohama 223-8522, Japan
-
Nishimura Ryo
Department of Electronics and Electrical Engineering, Keio University, 3-14-1 Hiyoshi, Kohoku-ku, Yokohama 223-8522, Japan
-
Sakano Tatsunori
Department of Electronics and Electrical Engineering, Keio University, 3-14-1 Hiyoshi, Kohoku-ku, Yokohama 223-8522, Japan
-
Okato Takeshi
Department of Electronics and Electrical Engineering, Keio University, 3-14-1 Hiyoshi, Kohoku-ku, Yokohama 223-8522, Japan
関連論文
- Enhanced Transfection Efficiency in Laser-Induced Stress Wave-Assisted Gene Transfer at Low Laser Fluence by Increasing Pressure Impulse
- Transcranial Optical Imaging of Cold-Injured Brain in Rat
- Delivery of Photosensitizer to Cells by the Stress Wave Induced by a Single Nanosecond Laser Pulse
- Transdermal Delivery of Photosensitizer by the Laser-Induced Stress Wave in Combination with Skin Heating : Cross-Disciplinary Areas
- Estimation of Connectivity between Paragraphs in a Mail Text
- Nano-optical probing of exciton wave-functions confined in a GaAs quantum dot
- Design and Implementation of Near-Field Scanning Optical Microscope for Observation of Interfacial Liquid Crystal Orientation : Structure and Mechanical and Thermal Properties of Condensed Matter
- Crystal Growth of Nd:YAG Laser Films on Various Substrates by Pulsed Laser Deposition
- Dot Structures Fabricated by Laser Etching : Laser Wavelength Dependence of Dot Structures Fabricated by Laser Etching
- Spatial Controllability of Periodic Ripple Structures Generated in Laser Etching of n-GaAs
- Fabrication of Periodic Submicron Dot Structures of N-InP by Laser-Induced Surface Electromagnetic Wave Etching
- Analysis on the Tm^, Ho^ Concentrations in Alumino-Zirco-Fluoride Glass for Efficient 2-μm Lasing
- FDTD Analysis of a Near-Field Optical Fiber Probe with a Double Tapered Structure(Special Issue on Near-Field Optics and Its Applications)
- Estimation of Connectivity between Paragraphs in a Mail Text
- Kinetic Studies of the Electron-Beam-Pumped ArF Laser Using an Ne/Ar/F_2 Mixture
- Observation of the Opening/Closing of a Diffuse Discharge in a Mixture of C_2HF_3/He by KrF Laser Irradiation
- Coherent Dynamics of Excitons in an Island-Inserted GaAs/AlAs Quantum Well Structure : Suppression of Phase Relaxation and a Deep Quantum Beat
- Free Spectral Range Variation of a Broadband, High-Finesse, Multi-Channel Fabry-Perot Filter using Chirped Fiber Bragg Gratings
- Effect of an SF_6 Additive on a TE CO Laser
- Improved Performance of a Pulsed CO Laser with Xylene Additive
- Comprehensive Studies on a Photoinitiated H_2/F_2 Laser Using Atmospheric Gas Mixtures with O_2 Inhibitor
- An H_2(D_2)/F_2 Chemical Laser Initiated with a Novel Teflon Surface Spark UV Flash
- Hundredjoule-Level KrF Lasers Excited Longitudinally by an Intense Electron Beam
- Development of Multihundredjoule HF (H_2/SF_6) Chemical Lasers Initiated by Intense Electron Beams
- Characterization of a Longitudinally Pumped CW, Room-Temperature Operation of Tm^:YVO_4 Laser
- In vivo Photoacoustic Spectroscopic Imaging of Hemoglobin Derivatives in Thermally Damaged Tissue
- Laser-induced Stress Wave-assisted Gene Transfection with Cationic Liposome
- Integrity of Plasmid Deoxyribonucleic Acid after Application of Laser-Induced Stress Waves Used for Gene Transfection
- Transcranial Photoacoustic Measurements of Cold-Injured Brains in Rats
- Observation of Spatial and Temporal Evolution of Planar Photoinduced Waveguide in LiNbO_3 Crystal
- Second-Harmonic Generation from Intense, 100-fs Ti:Sapphire Laser Pulses in Potassium Dihydrogen Phosphate, Cesium Lithium Borate and β-Barium Metaborate
- Two-Dimensional Visualization of Photoinduced Refractive Index Change in Photorefractive Lithium Niobate Crystal
- Recent Advances in Near-field Scanning Optical Microscopy
- Epitaxial Growth of BaTi0_3 Optical Thin Films by Pulsed KrF Laser Deposition and in situ Pulsed Laser Annealing
- Pulsed HF Chemical Lasers from Reactions of Fluorine Atoms with Benzene, Toluene, Xylene, Methanol, and Acetone
- Possibility of a High-Efficiency Pulsed Vibrational Overtone HF Chemical Laser
- A UV-Preionized High-Repetition-Rate TEA CO_2 Laser
- A High-Efficiency, High-Repetition-Rate KrF(B→X) Excimer Lamp Excited by Microwave Discharge
- Pulsed CO_2 Laser Pumped by an All Solid-State Magnetic Exeiter
- Parametric Study of TE HF Chemical Lasers
- Temperature Dependence and Enhanced Output of Pulsed Discharge-Initiated HF Chemical Lasers Using SF_6/H_2, SF_6/CH_4 and SF_6/C_4H_ Mixtures
- Time-Resolved Spectroscopic Studies on the TE HF Chemical Lasers Using the Mixtures of SF_6/H_2 and SF_6/CH_4
- Catalyst-Free Growth of High-Quality ZnO Nanorods on Si(100) Substrate by Two-Step, Off-Axis Pulsed-Laser Deposition
- In Vivo Targeted Gene Transfer by Direct Irradiation with Nanosecond Pulsed Laser
- Enhanced Photodynamic Effect by the Assistance of Nanosecond-Pulsed-Laser-Induced Stress Wave
- Pulsewidth Control of Intense Sub-Picosecond Laser Using Autocloned Photonic Crystal
- Fabrication of Hexagonally Arrayed Nanoholes Using Femtosecond Laser Pulse Ablation with Template of Subwavelength Polystyrene Particle Array
- Femtosecond Laser Ablation of Crystalline Iron: Experimental Investigation and Molecular Dynamics Simulation