Detail publikačního výsledku

Electron emission from H-terminated diamond enhanced by polypyrrole grafting

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

Originální název

Electron emission from H-terminated diamond enhanced by polypyrrole grafting

Anglický název

Electron emission from H-terminated diamond enhanced by polypyrrole grafting

Druh

Článek WoS

Originální abstrakt

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.

Anglický abstrakt

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.

Klíčová slova

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

Klíčová slova v angličtině

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

Autoři

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

Rok RIV

2022

Vydáno

01.05.2021

ISSN

0008-6223

Periodikum

CARBON

Svazek

176

Číslo

1

Stát

Spojené státy americké

Strany od

642

Strany do

649

Strany počet

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"
}