Detail publikačního výsledku

From deformation to performance: WO3-coated tungsten emitters created by anodization

KOŠELOVÁ, Z.; BURDA, D.; ALLAHAM, M.; FOHLEROVÁ, Z.; KNÁPEK, A.

Originální název

From deformation to performance: WO3-coated tungsten emitters created by anodization

Anglický název

From deformation to performance: WO3-coated tungsten emitters created by anodization

Druh

Stať ve sborníku v databázi WoS či Scopus

Originální abstrakt

This study investigates the field emission characteristics of tungsten single-tip field emitters coated with a thin tungsten trioxide (WO3) layer. The WO3 dielectric barrier at the metal-vacuum interface aims to enhance performance by extending operational lifespan and increasing current levels. High-voltage applications risk deforming the emitter tip due to phase transitions to plasma. However, altered tip shapes, formed from evaporation may provide stability and performance benefits. Our results show that emitters with thicker oxide layers after deformation can exhibit stable emission characteristics and higher voltage thresholds, suggesting that oxide-coated tungsten tips can enhance cold field emission properties.

Anglický abstrakt

This study investigates the field emission characteristics of tungsten single-tip field emitters coated with a thin tungsten trioxide (WO3) layer. The WO3 dielectric barrier at the metal-vacuum interface aims to enhance performance by extending operational lifespan and increasing current levels. High-voltage applications risk deforming the emitter tip due to phase transitions to plasma. However, altered tip shapes, formed from evaporation may provide stability and performance benefits. Our results show that emitters with thicker oxide layers after deformation can exhibit stable emission characteristics and higher voltage thresholds, suggesting that oxide-coated tungsten tips can enhance cold field emission properties.

Klíčová slova

Tungsten emitters, cold field emission, FEM analysis, oxide coating, dielectric barrier

Klíčová slova v angličtině

Tungsten emitters, cold field emission, FEM analysis, oxide coating, dielectric barrier

Autoři

KOŠELOVÁ, Z.; BURDA, D.; ALLAHAM, M.; FOHLEROVÁ, Z.; KNÁPEK, A.

Rok RIV

2025

Vydáno

04.09.2024

Nakladatel

IEEE

ISBN

979-8-3503-7976-1

Kniha

2024 37th International Vacuum Nanoelectronics Conference (IVNC)

Strany od

1

Strany do

2

Strany počet

2

URL

https://ieeexplore.ieee.org/document/10652268

BibTex

@inproceedings{BUT189289,
  author="Zuzana {Košelová} and Daniel {Burda} and Mohammad Mahmoud Mohammad {Allaham} and Zdenka {Fohlerová} and Alexandr {Knápek}",
  title="From deformation to performance: WO3-coated tungsten emitters created by anodization",
  booktitle="2024 37th International Vacuum Nanoelectronics Conference (IVNC)",
  year="2024",
  pages="1--2",
  publisher="IEEE",
  doi="10.1109/IVNC63480.2024.10652268",
  isbn="979-8-3503-7976-1",
  url="https://ieeexplore.ieee.org/document/10652268"
}