Controlled Synthesis and Field Emission Properties of ZnO Nanostructures with Different Morphologies

2006 ◽  
Vol 6 (3) ◽  
pp. 787-790 ◽  
Author(s):  
Y. H. Huang ◽  
Y. Zhang ◽  
L. Liu ◽  
S. S. Fan ◽  
Y. Wei ◽  
...  
Keyword(s):  
Field Emission ◽  
Zinc Powder ◽  
Emission Current ◽  
Controlled Synthesis ◽  
Zno Nanostructures ◽  
Pure Zinc ◽  
Field Emitter ◽  
Emission Properties ◽  
Field Emission Properties ◽  
Turn On

By simply controlling atmosphere, rods, tetraleg-rods, and arrays of ZnO nanostructures have been fabricated respectively through pure zinc powder evaporation without catalyst at temperature of 650 &sim 700 °C. Investigations through HRTEM and XRD showed that the growth of the synthesized ZnO nanostructures was controlled by vapor-solid mechanism. Field emission measurements revealed that all of the structures, owing to their very low turn-on voltage, sufficient emission current and proper linearity of 1/V ∼ Ln(I/V2), are likely to be potential candidates as a field emitter. The results also indicated that field emission properties are relative to morphology and size of the tips of ZnO nanostructures, and the nanorods with sharp tips possess the first-class FE property.

Fabrication of Tetrapod-liked Al-doped ZnO Nanostructures and Their Photoluminescence and Field Emission Properties

2013 ◽  
Vol 34 (11) ◽  
pp. 1424-1429
Author(s):  
周雄图 ZHOU Xiong-tu ◽  
曾祥耀 ZENG Xiang-yao ◽  
张永爱 ZHANG Yong-ai ◽  
郭太良 GUO Tai-liang
Keyword(s):  
Field Emission ◽  
Zno Nanostructures ◽  
Emission Properties ◽  
Field Emission Properties ◽  
Doped Zno

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.

Highly stable field emission properties from well-crystalline 6-Fold symmetrical hierarchical ZnO nanostructures

2017 ◽  
Vol 43 (15) ◽  
pp. 11753-11758 ◽  
Author(s):  
H. Algarni ◽  
Ahmad Umar ◽  
S.H. Kim ◽  
M.S. Al-Assiri ◽  
A.E. Al-Salami
Keyword(s):  
Field Emission ◽  
Zno Nanostructures ◽  
Emission Properties ◽  
Field Emission Properties ◽  
Stable Field

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.

Controlled synthesis of novel rod-like Cu 1.81 S nanostructures and field emission properties

2014 ◽  
Vol 315 ◽  
pp. 235-240 ◽  
Author(s):  
Changqing Song ◽  
Ke Yu ◽  
Shouchuan Li ◽  
Haihong Yin ◽  
Ning zhang ◽  
...  
Keyword(s):  
Field Emission ◽  
Controlled Synthesis ◽  
Emission Properties ◽  
Field Emission Properties
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