Publication detail

Electron emission from H-terminated diamond enhanced by polypyrrole grafting

UKRAINTSEV, E. KROMKA, A. JANSSEN, W. HAENEN, K. TAKEUCHI, D. BÁBOR, P. REZEK, B.

Original Title

Electron emission from H-terminated diamond enhanced by polypyrrole grafting

Type

journal article in Web of Science

Language

English

Original Abstract

Electron emission plays an important role in diverse applications, from cold cathodes to chemical processes (solvated electrons, water purification), energy generation (thermionic or dye-sensitized solar cells), and even cancer treatment. Here we show that by surface treatment using electrochemically grown polypyrrole the secondary-electron emission and photoelectron emission from boron-doped diamond is enhanced even above the intensity of electron emission from the hydrogen-terminated surface with negative electron affinity. This enhancement is stable in air for at least one month and it persists also in vacuum after thermal annealing. Scanning electron microscopy, Kelvin probe force microscopy, total photoelectron yield spectroscopy as well as surface mapping by Auger and secondary ion mass spectroscopies are used to characterize and correlate the surface electronic and chemical properties. A model of the electron emission enhancement is provided.

Keywords

Diamond; Surfaces; Electron emission; Electron affinity; Polypyrrole; Kelvin probe

Authors

UKRAINTSEV, E.; KROMKA, A.; JANSSEN, W.; HAENEN, K.; TAKEUCHI, D.; BÁBOR, P.; REZEK, B.

Released

1. 5. 2021

ISBN

0008-6223

Periodical

CARBON

Year of study

176

Number

1

State

United States of America

Pages from

642

Pages to

649

Pages count

8

URL

https://www.sciencedirect.com/science/article/pii/S0008622320312203

BibTex

@article{BUT169677,
  author="UKRAINTSEV, E. and KROMKA, A. and JANSSEN, W. and HAENEN, K. and TAKEUCHI, D. and BÁBOR, P. and REZEK, B.",
  title="Electron emission from H-terminated diamond enhanced by polypyrrole grafting",
  journal="CARBON",
  year="2021",
  volume="176",
  number="1",
  pages="642--649",
  doi="10.1016/j.carbon.2020.12.043",
  issn="0008-6223",
  url="https://www.sciencedirect.com/science/article/pii/S0008622320312203"
}