Synthesis, structure and optimized field emission properties of highly oriented ZnO/Pt core–shell nanorods on a Zn substrate

CrystEngComm ◽  
2020 ◽  
Vol 22 (27) ◽  
pp. 4630-4639
Author(s):  
L. A. Ma ◽  
W. Z. Lai ◽  
Z. H. Wei ◽  
Y. B. Chen ◽  
L. Sun ◽  
...  
Keyword(s):  
Field Emission ◽  
Current Density ◽  
Core Shell ◽  
Emission Properties ◽  
Field Emission Properties

The current density of as-fabricated Pt15/ZnO NR emitters was about 1900 times that of the bare ZnO emitters.

The Field Emission of Globe-Like Diamond Microcrystalline Aggregate Films

2011 ◽  
Vol 279 ◽  
pp. 88-92
Author(s):  
Jin Hai Gao ◽  
Wu Qing Zhang ◽  
Zhen Li
Keyword(s):  
Field Emission ◽  
Electric Fields ◽  
Current Density ◽  
Microwave Plasma ◽  
Chemical Vapor ◽  
Chemical Vapor Deposition Method ◽  
Emission Properties ◽  
Plasma Chemical Vapor Deposition ◽  
Field Emission Properties ◽  
Turn On

The globe-like diamond microcrystalline aggregates films were fabricated by microwave plasma chemical vapor deposition method. The field emission properties and emission stability of the films were tested using a diode structure in vacuum. It was found that the globe-like diamond microcrystalline aggregates films exhibited good electron emission properties and stability. The turn-on field of 0. 55 V /μm and the current density of 11mA/cm2 at the electric fields of 2.73V/μm were obtained. At the successive operator circles, the turn-on field tends to stabilize at 1. 08V /μm and the current density of 6.6 mA/cm2 is obtained.

scholarly journals Micro Flowers of SrS/Bi2S3 Nanocomposite and Its Field Emission Properties

2019 ◽  
Vol 3 (4) ◽  
pp. 105
Author(s):  
Aarti R. Gunjal ◽  
Ujjwala P. Chothe ◽  
Yogesh A. Sethi ◽  
Rajendra P. Panmand ◽  
Jalinder D. Ambekar ◽  
...  
Keyword(s):  
Field Emission ◽  
Current Density ◽  
Emission Current Density ◽  
Emission Current ◽  
Threshold Field ◽  
Light Illumination ◽  
Emission Properties ◽  
Field Emission Properties ◽  
Morphological Studies ◽  
A Current

The three-dimensional hierarchical SrS/Bi2S3 heterostructures were synthesized by a template-free single-step hydrothermal method. The structural and morphological studies revealed the formation of a single crystalline orthorhombic heterostructure with rod-like morphologies possessing a high aspect ratio. The field emission properties of SrS/Bi2S3 nanorods were investigated. J–E and the Fowler–Nordheim (F–N) plot, as well as long-term field emission (FE) stability, were studied. SrS/Bi2S3 nanoflowers have enhanced the FE properties more than the virgin Bi2S3. The observed values of the re-producible turn-on field for SrS/Bi2S3 defined to draw an emission current density of ca. 1 µA/cm2 were found to be ca. 2.50 V/µm, and of the threshold field to draw a current density of ca. 10 µA/cm2 were found to be ca. 3.00 V/µm (without visible light illumination). A maximum emission current density of ca. 527 μA/cm2 was drawn without light and a current density of ca. 1078 μA/cm2 with light, which is higher than that of pristine Bi2S3.

Growth of Carbon Nanofibers on Electroless Ni-P Alloy Catalyst

2002 ◽  
Vol 740 ◽  
Author(s):  
T.K. Tsai ◽  
W.L. Liu ◽  
S.H. Hsieh ◽  
W.J. Chen
Keyword(s):  
Field Emission ◽  
Current Density ◽  
Small Diameter ◽  
Emission Current Density ◽  
Emission Current ◽  
Threshold Field ◽  
Random Orientation ◽  
Emission Properties ◽  
Field Emission Properties ◽  
Electroless Ni

ABSTRATECarbon nanotubes (CNTs) were grown by electroless Ni-P plated on silicon substrate in a microwave heating chemical vapor deposition (CVD) system with methane gas at 700 °C. The CNTs grown on Ni–P catalyst showed random orientation and small diameter around 15–30 nm. Field emission test results indicated that the Ni–P catalyzed-CNTs exhibited excellent field emission properties. The turn-on field was about 0.56 V/μm with an emission current density 10 μA/cm2 and the threshold field was 4.4 V/μm with an emission current density 10 mA/cm2. These excellent field emission properties may be attributed to the random orientation and small diameter of CNTs.

Enhanced field emission properties of ZnO–Ag2S core–shell heterojunction nanowires

2016 ◽  
Vol 45 (21) ◽  
pp. 8777-8782 ◽  
Author(s):  
Guojing Wang ◽  
Mingyang Li ◽  
Chienhua Chen ◽  
Shasha Lv ◽  
Jiecui Liao ◽  
...  
Keyword(s):  
Quantum Dot ◽  
Field Emission ◽  
Simple Approach ◽  
Nanowire Arrays ◽  
Core Shell ◽  
Zno Nanowire ◽  
Emission Properties ◽  
Field Emission Properties ◽  
Zno Nanowire Arrays

A simple approach to Ag2S quantum dot modification was used to tune the field emission properties of ZnO nanowire arrays.

Controlled Core−Shell Structure for Efficiently Enhancing Field-Emission Properties of Organic−Inorganic Hybrid Nanorods

2009 ◽  
Vol 113 (29) ◽  
pp. 12669-12673 ◽  
Author(s):  
Yanbing Guo ◽  
Huibiao Liu ◽  
Yongjun Li ◽  
Guoxing Li ◽  
Yingjie Zhao ◽  
...  
Keyword(s):  
Field Emission ◽  
Shell Structure ◽  
Core Shell ◽  
Inorganic Hybrid ◽  
Emission Properties ◽  
Field Emission Properties ◽  
Core Shell Structure

The Effect of Thermal Accumulation to the Field Emission Properties of the Carbon Nanotubes

2015 ◽  
Vol 645-646 ◽  
pp. 265-268
Author(s):  
Fei Yan ◽  
Nan Nan Li ◽  
Lei Chen ◽  
Da Zhi Jin ◽  
Wei Xiang
Keyword(s):  
Carbon Nanotubes ◽  
Experimental Observation ◽  
Field Emission ◽  
Current Density ◽  
Pulse Mode ◽  
Emission Characteristics ◽  
Emission Properties ◽  
Good Linear ◽  
Field Emission Properties ◽  
Linear Fit

In this paper, we report a recent experimental observation of the effect of thermal accumulation to the field emission properties of the carbon nanotubes. The carbon nanotubes are grown on Ni by CVD. We compare the field emission characteristics of carbon nanotubes cathodes under DC and pulse mode. Our research shows that the higher current and higher current density could be acquired by suppressing the thermal accumulation. The Fowler-Nordheim plot shows a good linear fit, indicating that the emission current of carbon nanotubes follows Fowler-Nordheim behavior.

Field Emission Properties of BN/C and BN@C Hybrid Nanotubes

2002 ◽  
Vol 739 ◽  
Author(s):  
Vincent Meunier ◽  
Marco Buongiorno Nardelli ◽  
William Shelton ◽  
Christopher Roland ◽  
Jerry Bernholc ◽  
...  
Keyword(s):  
Carbon Nanotubes ◽  
Boron Nitride ◽  
Plane Wave ◽  
Electric Field ◽  
Field Emission ◽  
Current Density ◽  
Real Space ◽  
Ab Initio Methods ◽  
Emission Properties ◽  
Field Emission Properties

ABSTRACTOur simulations predict that boron-nitride (BN) doping in carbon nanotubes can greatly improve the field emission properties of these systems. The intrinsic electric field associated with the polarity of the B-N bond enhances the emitted current density through a reduction of the work function at the tip. Using a combination of real-space and plane-wave ab initio methods, we show that this effect is present in both coaxial (BN@C) and linear (BN/C) nanotubular assemblies. While in the coaxial geometry the improvement amounts to a factor of five, the current density is predicted to increase by up to two orders of magnitude in BN/C superlattices.

Synthesis, Structure, and Multiply Enhanced Field-Emission Properties of Branched ZnS Nanotube−In Nanowire Core−Shell Heterostructures

ACS Nano ◽  
2008 ◽  
Vol 2 (5) ◽  
pp. 1015-1021 ◽  
Author(s):  
Ujjal K. Gautam ◽  
Xiaosheng Fang ◽  
Yoshio Bando ◽  
Jinhua Zhan ◽  
Dmitri Golberg
Keyword(s):  
Field Emission ◽  
Core Shell ◽  
Emission Properties ◽  
Field Emission Properties

Controlled Fabrication of Core–Shell TiO2/C and TiC/C Nanofibers on Ti Foils and Their Field-Emission Properties

2012 ◽  
Vol 4 (2) ◽  
pp. 1037-1042 ◽  
Author(s):  
Xuming Zhang ◽  
Kaifu Huo ◽  
Hairong Wang ◽  
Biao Gao ◽  
Jijiang Fu ◽  
...  
Keyword(s):  
Field Emission ◽  
Core Shell ◽  
Emission Properties ◽  
Field Emission Properties

Synthesis of needle-shape ZnO-ZnS core-shell heterostructures and their optical and field emission properties

2015 ◽  
Vol 11 (6) ◽  
pp. 957-963 ◽  
Author(s):  
Jalal Rouhi ◽  
C. H. Raymond Ooi ◽  
Shahrom Mahmud ◽  
Mohamad Rusop Mahmood
Keyword(s):  
Field Emission ◽  
Core Shell ◽  
Emission Properties ◽  
Field Emission Properties
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