Fabrication and Field Emission Properties of In2O3 Nanorods

2013 ◽  
Vol 663 ◽  
pp. 417-420
Author(s):  
Bing Wang ◽  
Wu Huan Yu ◽  
Zheng Zhao Qiang
Keyword(s):  
Field Emission ◽  
Thermal Evaporation ◽  
Silicon Substrates ◽  
X Ray Diffraction ◽  
Au Catalyst ◽  
Vapor Liquid Solid ◽  
X Ray ◽  
Field Emission Properties ◽  
Morphology And Structure ◽  
Prepared Nanorods

A new nanostructure, 1D In2O3nanorod, have been grown on single silicon substrates by Au catalyst assisted thermal evaporation of In2O3and active carbon powders. The morphology and structure of the prepared nanorods are determined on the basis of field-emission scanning electron microscopy (FESEM) and x-ray diffraction (XRD). The field-emission properities of In2O3nanorods have been measured and analysed. The growth mechanism of the In2O3nanorods can be explained on the basis of the vapor–liquid–solid (VLS) processes.

Fabrication and Hydrogen Sensing Property of In2O3 Nanotowers

2013 ◽  
Vol 834-836 ◽  
pp. 913-916
Author(s):  
Zhao Qiang Zheng ◽  
Huan Yu Wu ◽  
Bing Wang
Keyword(s):  
Self Assembly ◽  
Thermal Evaporation ◽  
Sensor Response ◽  
The Self ◽  
X Ray Diffraction ◽  
Excellent Performance ◽  
X Ray ◽  
Hydrogen Sensing ◽  
Morphology And Structure ◽  
Prepared Nanorods

In2O3nanotowers have been fabricated on Au item-shaped parallel electrodes using thermal evaporation of the mixed powders of In2O3and graphite with Au catalysts. The morphology and structure of the prepared nanorods are determined on the basis of field-emission scanning electron microscopy (FESEM) and x-ray diffraction (XRD). The self-assembly grown sensors of In2O3nanotowers have excellent performance in sensor response to hydrogen concentration of 1000 ppm under operated temperature of 300°C.

scholarly journals Synthesis and Field Emission Properties of Hierarchical ZnO Nanostructures

2010 ◽  
Vol 2010 ◽  
pp. 1-5 ◽  
Author(s):  
Deyan Peng ◽  
Yanjun Huang ◽  
Ke Yu ◽  
Lijun Li ◽  
Ziqiang Zhu
Keyword(s):  
Field Emission ◽  
Thermal Evaporation ◽  
Building Blocks ◽  
Zno Nanostructures ◽  
X Ray Diffraction ◽  
X Ray ◽  
Emission Properties ◽  
Field Emission Properties ◽  
Microelectronic Devices ◽  
Source Materials

Three novel kinds of hierarchical ZnO nanostructures: nanocombs nanoscrewdrivers and nanonails, have been synthesized in large quantities via a simple thermal evaporation process in the same run of growth in different regions of the quartz tube. The morphologies could be well controlled by adjusting the distances between the source materials and the substrates. These ZnO products were investigated by scanning electron microscopy, X-ray diffraction and Raman spectroscopy. The field emission properties of the ZnO nanostructures were investigated. These hierarchical ZnO nanostructures may be attractive building blocks for field emission microelectronic devices and other devices.

scholarly journals Properties of Nanostructure Bismuth Telluride Thin Films Using Thermal Evaporation

2017 ◽  
Vol 2017 ◽  
pp. 1-4 ◽  
Author(s):  
Swati Arora ◽  
Vivek Jaimini ◽  
Subodh Srivastava ◽  
Y. K. Vijay
Keyword(s):  
Electron Microscopy ◽  
Thin Films ◽  
Bismuth Telluride ◽  
Room Temperature ◽  
Thermal Evaporation ◽  
Silicon Substrates ◽  
X Ray Diffraction ◽  
Thermal Evaporation Method ◽  
X Ray ◽  
Scanning Electron

Bismuth telluride has high thermoelectric performance at room temperature; in present work, various nanostructure thin films of bismuth telluride were fabricated on silicon substrates at room temperature using thermal evaporation method. Tellurium (Te) and bismuth (Bi) were deposited on silicon substrate in different ratio of thickness. These films were annealed at 50°C and 100°C. After heat treatment, the thin films attained the semiconductor nature. Samples were studied by X-ray diffraction (XRD) and scanning electron microscopy (SEM) to show granular growth.

Sn-Catalyzed Growth of MgO Nanowires

2007 ◽  
Vol 7 (12) ◽  
pp. 4434-4438 ◽  
Author(s):  
Hyoun Woo Kim ◽  
Seung Hyun Shim ◽  
Jong Woo Lee
Keyword(s):  
Electron Microscopy ◽  
Thermal Evaporation ◽  
Light Emission ◽  
X Ray Diffraction ◽  
Vapor Liquid Solid ◽  
X Ray ◽  
Transmission Electron ◽  
Fabrication And Characterization ◽  
Visible Light Emission

We reported the fabrication and characterization of MgO nanowires, which were grown by thermal evaporation of the mixture of MgB2 and Sn powders at 800 °C through a vapor-liquid-solid (VLS) process. We characterized as-synthesized MgO nanowires using X-ray diffraction, scanning electron microscopy, and transmission electron microscopy. Sn nanoparticles were located at the tips of the nanowires, serving as catalyst for the growth of MgO nanowires. The produced nanowires were of cubic MgO structures with diameters in the range of 10–170 nm. The PL measurement with a Gaussian fitting exhibited visible light emission bands centered at 403, 576, and 720 nm.

Photoluminescence and Structural Characteristics of SnO2 Nanopetals Synthesized by Thermal Evaporation

2010 ◽  
Vol 152-153 ◽  
pp. 697-701
Author(s):  
Bing Wang ◽  
Ling Li
Keyword(s):  
Room Temperature ◽  
Thermal Evaporation ◽  
Structural Characteristics ◽  
The Self ◽  
Silicon Substrates ◽  
Photoluminescence Spectra ◽  
X Ray Diffraction ◽  
X Ray ◽  
Room Temperature Photoluminescence ◽  
Sno2 Nanostructure

A new nanostructure, (2D) nanopetal of SnO2, has been grown on single silicon substrates by Au-Ag alloying catalyst assisted carbothermal evaporation of SnO2. Field emission scanning electron microscopy (FESEM), x-ray diffraction (XRD) and Raman are employed to identify the morphology and structure of the synthesized productions. Room-temperature photoluminescence (PL) is used to characterize the luminescence of SnO2 nanostructure. Three new peaks at 356, 450 and 489 nm in the measured photoluminescence spectra are observed, implying that more luminescence centers exist in SnO2 nanopetals due to nanocrystals and defects. The growth of the SnO2 nanopetals is discussed on the basis of the self-catalyst mechanism.

Field Emission Properties of ZnO Nanorods Synthesized by Aqueous Solutions

2010 ◽  
Vol 663-665 ◽  
pp. 33-36
Author(s):  
Bo Gao ◽  
Hai Ming Zhang ◽  
Yan Jun Zhu ◽  
Yu Jie Li ◽  
Guo Feng Hu
Keyword(s):  
Aqueous Solutions ◽  
Field Emission ◽  
Zno Nanorods ◽  
Threshold Field ◽  
X Ray Diffraction ◽  
Xrd Pattern ◽  
X Ray ◽  
Field Emission Properties ◽  
Turn On ◽  
Structure Properties

In this paper, we introduce a simple and effective method to prepare ZnO nanorods using aqueous solutions. The morphology and structure properties of ZnO nanorods were investigated using scanning electron microscopy (SEM), X-ray diffraction (XRD) and photoluminescence (PL). The SEM results indicated that the diameter of ZnO nanoroads was about 100 nm. The XRD pattern showed that the ZnO nanorods had high-purity wuruzite structure. The PL spectrum revealed that ZnO nanorods had a strong visible emission at 423 nm. The field emission (FE) properties of ZnO nanorods were also studied. The FE results showed that the turn-on field and threshold field were 24V/μm and 39V/μm, respectively.

scholarly journals Change in crystalline structure of W18O49 nanowires induced by X-ray irradiation and its effects on field emission

RSC Advances ◽  
2018 ◽  
Vol 8 (2) ◽  
pp. 752-760 ◽  
Author(s):  
Junqing Wu ◽  
Bo Wang ◽  
Futing Yi ◽  
Shaozhi Deng ◽  
Ningsheng Xu ◽  
...  
Keyword(s):  
Chemical Composition ◽  
Field Emission ◽  
Crystalline Structure ◽  
Thermal Evaporation ◽  
X Ray ◽  
Emission Properties ◽  
Field Emission Properties

W18O49 nanowires were synthesized by thermal evaporation, and the effects of X-ray irradiation on their crystalline structure, chemical composition, and field emission properties were systematically investigated.

SYNTHESIS AND FIELD EMISSION PROPERTIES OF SnS2 AND In-DOPED SnS2 WITH HIERARCHICAL STRUCTURE

NANO ◽  
2011 ◽  
Vol 06 (05) ◽  
pp. 489-496 ◽  
Author(s):  
H. X. ZHONG ◽  
C. X. WANG
Keyword(s):  
Electron Microscopy ◽  
Field Emission ◽  
Photoelectron Spectroscopy ◽  
Sulfur Source ◽  
X Ray Diffraction ◽  
Hydrothermal Route ◽  
X Ray ◽  
Emission Properties ◽  
Field Emission Properties ◽  
Transmission Electron

A simple hydrothermal route was employed to prepare flower-like SnS2 and In -doped SnS2 by using biomolecular L-cysteine as sulfur source. The synthetic samples were characterized by X-ray diffraction, scanning electron microscopy, high resolution transmission electron microscopy, X-ray photoelectron spectroscopy and Raman spectroscopy in detail. Furthermore, the field emission from both the materials was investigated, it was found that both of them have excellent field emission properties, and the doped In has enhanced the field emission properties.

Top-Down Formation of GaN Nanocone Arrays for Application in Field Emission

2010 ◽  
Vol 44-47 ◽  
pp. 2514-2518
Author(s):  
Xin Zhong Wang ◽  
Guang Hui Yu ◽  
Shi Guo Li ◽  
Cheng Guo Wu
Keyword(s):  
Field Emission ◽  
Plasma Etching ◽  
Inductively Couple Plasma ◽  
X Ray Diffraction ◽  
Top Down ◽  
X Ray ◽  
Field Emission Properties ◽  
Turn On ◽  
Novel Method ◽  
Inductively Couple Plasma Etching

We present a novel method to fabricate uniform GaN nanocone arrays (GNA) using Nickel-nanoisland masks. The nanoscale conelike arrays with high density can be formed over the entire 2-inch wafer by inductively couple plasma etching. The results of X-ray diffraction exhibit significant decrease on the (102) reflection in GaN sample with the GNA. Field-emission measurements show that the GNA with sharp tips have a turn-on field of ~ 5.5 V/μm. It is believed that the high aspect ratio resulting from the conelike morphology is responsible for the enhancement of the field-emission properties of GNA.

Synthesis and Field Emission Properties of Hand-Like Bi2O3 Microcrystals

2010 ◽  
Vol 663-665 ◽  
pp. 50-53
Author(s):  
Jin Yang Lin ◽  
Yong Ai Zhang ◽  
Ling Jie Wang ◽  
L. Yang ◽  
Tai Liang Guo
Keyword(s):  
Field Emission ◽  
Current Density ◽  
Emission Current Density ◽  
Xrd Analysis ◽  
X Ray Diffraction ◽  
Chemical Route ◽  
X Ray ◽  
Field Emission Properties ◽  
Novel Structures ◽  
A Current

A simple solution chemical route for bulk synthesis of hand-like Bi2O3 microcrystals has been demonstrated. The microcrystals are assembled by several short rods that have a diameter in the range of 50-500 nm, and a length in the range of 1-20 μm. X-ray diffraction (XRD) analysis and scanning electron microscopy (SEM) were employed to characterize the structure and morphology of these novel structures. The field emission of the sample started at a turn-on field of 2.1 V/μm at a current density of 0.1 μA/cm2, while the emission current density reached about 0.1mA/cm2 at an applied field of 5.5 V/μm. These results suggest that hand-like Bi2O3 microcrystals can be an excellent FE material candidate.

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