Publication detail

Comprehensive analysis of charge carriers dynamics through the honeycomb structure of graphite thin films and polymer graphite with applications in cold field emission and scanning tunneling microscopy

ALLAHAM, M. DARADKEH, S. AL-BRAIKAT, H. DALLAEV, R. BURDA, D. KOŠELOVÁ, Z. AL-AKHRAS, M. JABER, A. MOUSA, M. SOBOLA, D. KOLAŘÍK, V. KNÁPEK, A.

Original Title

Comprehensive analysis of charge carriers dynamics through the honeycomb structure of graphite thin films and polymer graphite with applications in cold field emission and scanning tunneling microscopy

Type

journal article in Web of Science

Language

English

Original Abstract

Polymer graphite electron sources have performed satisfactorily as field emission emitters and scanning tunneling microscopy probes in the past few years. However, the emission process was characterized by limited total emission currents. This paper introduces the elemental, vibrational, electronic structure, and optical analysis of polymer graphite and glass-graphite composite field emission cathodes to study these limitations. Moreover, the field emission characteristics are studied including the changes in the potential energy barrier of the used materials and structures. Among the studied structures, the cathodes prepared from graphite thin films deposited on a micropointed glass substrate (film-GMF) showed superior performance as random field emission arrays. This includes obtaining much higher emission current values ≈ 20 times) and lower threshold voltages ≈ 1/2) compared to the results obtained from polymer graphite samples. The enhancement factor in such emitters is believed to be the three-dimensional honeycomb structure of graphite. Moreover, the study includes applying graphite coatings to tungsten nano-field emission cathodes and scanning tunneling microscopy probes, which improves the performance of such cathodes/probes in both microscopic techniques.

Keywords

Cold field emission; Glass-graphite interface; Graphite microflakes; LiteScope; Polymer graphite

Authors

ALLAHAM, M.; DARADKEH, S.; AL-BRAIKAT, H.; DALLAEV, R.; BURDA, D.; KOŠELOVÁ, Z.; AL-AKHRAS, M.; JABER, A.; MOUSA, M.; SOBOLA, D.; KOLAŘÍK, V.; KNÁPEK, A.

Released

13. 9. 2024

Publisher

ELSEVIER

ISBN

2468-0230

Periodical

SURFACES AND INTERFACES

Year of study

53

Number

October 2024

State

Kingdom of the Netherlands

Pages from

1

Pages to

15

Pages count

15

URL

https://www.sciencedirect.com/science/article/pii/S2468023024012586?pes=vor

Full text in the Digital Library

http://hdl.handle.net/11012/249477

BibTex

@article{BUT189682,
  author="Mohammad Mahmoud {Allaham} and Samer {Daradkeh} and Hatem {Al-Braikat} and Rashid {Dallaev} and Daniel {Burda} and Zuzana {Košelová} and M-Ali {Al-Akhras} and Ahmad {Jaber} and Marwan {Mousa} and Dinara {Sobola} and Vladimír {Kolařík} and Alexandr {Knápek}",
  title="Comprehensive analysis of charge carriers dynamics through the honeycomb structure of graphite thin films and polymer graphite with applications in cold field emission and scanning tunneling microscopy",
  journal="SURFACES AND INTERFACES",
  year="2024",
  volume="53",
  number="October 2024",
  pages="1--15",
  doi="10.1016/j.surfin.2024.105102",
  issn="2468-0230",
  url="https://www.sciencedirect.com/science/article/pii/S2468023024012586?pes=vor"
}