Improvement of field emission properties of α-Fe2O3 nanoflakes due to the lowered back contact barrier after high energy X-ray irradiation

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.

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

NANO ◽

10.1142/s1793292011002810 ◽

2011 ◽

Vol 06 (05) ◽

pp. 489-496 ◽

Cited By ~ 2

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.

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Influence of high-energy electron irradiation on field emission properties of multi-walled carbon nanotubes (MWCNTs) films

Physica B Condensed Matter ◽

10.1016/j.physb.2011.02.033 ◽

2011 ◽

Vol 406 (9) ◽

pp. 1809-1813 ◽

Cited By ~ 15

Author(s):

Sandip S. Patil ◽

Pankaj M. Koinkar ◽

Sanjay D. Dhole ◽

Mahendra A. More ◽

Ri-ichi Murakami

Keyword(s):

Carbon Nanotubes ◽

Field Emission ◽

Electron Irradiation ◽

High Energy ◽

Energy Electron ◽

High Energy Electron ◽

Emission Properties ◽

Field Emission Properties ◽

Multi Walled Carbon Nanotubes ◽

Walled Carbon Nanotubes

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A study on the field emission properties of Bi2Se3 nanostructures prepared by laser ablation

Modern Physics Letters B ◽

10.1142/s0217984919400505 ◽

2019 ◽

Vol 33 (14n15) ◽

pp. 1940050

Author(s):

Yu Ohsumi ◽

Pankaj Koinkar ◽

Akihiro Furube ◽

Keh Moh Lin ◽

Subhash Kondawar ◽

...

Keyword(s):

Laser Ablation ◽

Field Emission ◽

Direct Method ◽

High Vacuum ◽

Target Material ◽

Ultra High Vacuum ◽

Emission Characteristics ◽

X Ray ◽

Emission Properties ◽

Field Emission Properties

One of the effective methods known as pulse laser ablation in liquid (PLAL), in which a solid target material is immersed in an organic solvent and laser beam is irradiated through liquid on a target material, is a direct method used to generate nanoparticles in liquid medium. The present work is focused on the preparation of bismuth selenide (Bi2Se3) nanoparticles using PLAL to study their field emission characteristics. The PLAL was performed under nanosecond (ns) laser with different ablation time of 120 min and 240 min. The field emission characteristics were measured in the planer “diode” configuration in all metal ultra-high vacuum (UHV) chamber. The prepared Bi2Se3 nanoparticles were analyzed with different characterization techniques such as scanning electron microscopy (SEM), X-ray diffraction (XRD) and UV-visible spectroscopy in order to study the surface morphology and structural information. The generation of Bi2Se3 nanoparticles is found after PLAL, which clearly suggests that bulk Bi2Se3 microsheet is transformed into Bi2Se3 nanoparticles. The X-ray spectra and UV spectra show the formation of nanoparticles upon laser ablation. The improvement in the field emission properties is found for laser-ablated Bi2Se3 nanoparticles. The field emission characteristics lead to increase in current density, which can be ascribed to the reduction in size of Bi2Se3 nanoparticles due to laser ablation. The prepared Bi2Se3 nanoparticles could be considered for novel applications in optoelectronics devices.

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Field emission properties of α-Fe2O3 nanotips after X-ray irradiation

25th International Vacuum Nanoelectronics Conference ◽

10.1109/ivnc.2012.6316979 ◽

2012 ◽

Author(s):

J. Q. Wu ◽

Jun Chen ◽

N. S. Xu ◽

F. T. Yi ◽

B. Wang

Keyword(s):

Field Emission ◽

X Ray ◽

Emission Properties ◽

Field Emission Properties

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Structure and Field Emission Properties of CNx Powders Synthesized by a Polymerization Process

Advanced Materials Research ◽

10.4028/www.scientific.net/amr.1095.666 ◽

2015 ◽

Vol 1095 ◽

pp. 666-670

Author(s):

Chun Xue Zhai ◽

Li Li Zhao ◽

Zhi Yong Zhang ◽

Wu Zhao

Keyword(s):

Field Emission ◽

Photoelectron Spectroscopy ◽

Annealing Treatment ◽

Polymerization Process ◽

Emission Measurement ◽

Field Emission Cathode ◽

X Ray ◽

Emission Properties ◽

Field Emission Properties ◽

Emission Cathode

The CNx powders were prepared by a polymerization process. The phase structure and bonding structure of the as-prepared powder were analyzed by X–ray diffraction and X–ray photoelectron spectroscopy, respectively. To prepare CNx field emission cathode, the CNx powders were coated onto Ti substrate using a suspension sedimentation method, followed by an annealing treatment to form a TiC phase. A three layer (Ti substrate–TiC joint network–CNx particles) structure model was proposed to explain the electron field emission properties for the as-prepared field emission cathode. The field emission measurement shows that for the as-prepared CNx cathode, the threshold electric field is 2.04 V/μm and the emission current density at 3.73 V/μm is 158 μA/cm.

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