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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" }