Low total electron yield graphene coatings produced by electrophoretic deposition
Authorized Users Only
2020
Authors
Aguincha, R.Bundaleski, Nenad

Bundaleska, N
Novaković, Mirjana M.

Henriques, Julio A. P.

Rakočević, Zlatko Lj.

Tatarova, Elena

Teodoro, Orlando M. N. D.

Article (Published version)

© 2019 Elsevier B.V.
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Stainless steel and copper technical substrates have been coated by free standing graphene using electrophoretic deposition technique, with the final goal to obtain chemically inert low secondary electron emission surfaces. This class of materials is of utmost interest in future accelerators in order to increase further the flux of accelerated charged particles in the beam. The measured maximum total electron yield of pristine graphene, which has been previously characterized by electron microscopies and X-ray photoelectron spectroscopy, appears to be about 1.0. The deposition parameters have been optimized in order to obtain surfaces with lowest total electron yield, but also composition and morphology close to that of pristine graphene. When applying these optimized deposition parameters graphene coatings on two substrates, i.e. stainless steel and copper, the maximum total electron yield of about 1.04 was obtained. The composition of coatings and the relative amounts of sp2 bonds ar...e slightly worse than those of the pristine graphene, while the surface morphology appears to be the same. Annealing at 150 °C for 64 h in high vacuum, showed that vacuum baking did not affect considerably the electron emission properties of the coatings. © 2019 Elsevier B.V.
Keywords:
Secondary electron yield / Graphene / Electrophoretic deposition / XPSSource:
Applied Surface Science, 2020, 504, 143870-Funding / projects:
- FCT - Portuguese National Funding Agency for Science, Research and Technology [UID/FIS/00068/2019]
- Functional, Functionalized and Advanced Nanomaterials (RS-45005)
- European Union's Horizon Research and Innovation Program [766894]
DOI: 10.1016/j.apsusc.2019.143870
ISSN: 0169-4332
WoS: 000502040600019
Scopus: 2-s2.0-85074423619
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VinčaTY - JOUR AU - Aguincha, R. AU - Bundaleski, Nenad AU - Bundaleska, N AU - Novaković, Mirjana M. AU - Henriques, Julio A. P. AU - Rakočević, Zlatko Lj. AU - Tatarova, Elena AU - Teodoro, Orlando M. N. D. PY - 2020 UR - https://vinar.vin.bg.ac.rs/handle/123456789/8616 AB - Stainless steel and copper technical substrates have been coated by free standing graphene using electrophoretic deposition technique, with the final goal to obtain chemically inert low secondary electron emission surfaces. This class of materials is of utmost interest in future accelerators in order to increase further the flux of accelerated charged particles in the beam. The measured maximum total electron yield of pristine graphene, which has been previously characterized by electron microscopies and X-ray photoelectron spectroscopy, appears to be about 1.0. The deposition parameters have been optimized in order to obtain surfaces with lowest total electron yield, but also composition and morphology close to that of pristine graphene. When applying these optimized deposition parameters graphene coatings on two substrates, i.e. stainless steel and copper, the maximum total electron yield of about 1.04 was obtained. The composition of coatings and the relative amounts of sp2 bonds are slightly worse than those of the pristine graphene, while the surface morphology appears to be the same. Annealing at 150 °C for 64 h in high vacuum, showed that vacuum baking did not affect considerably the electron emission properties of the coatings. © 2019 Elsevier B.V. T2 - Applied Surface Science T1 - Low total electron yield graphene coatings produced by electrophoretic deposition VL - 504 SP - 143870 DO - 10.1016/j.apsusc.2019.143870 ER -
@article{ author = "Aguincha, R. and Bundaleski, Nenad and Bundaleska, N and Novaković, Mirjana M. and Henriques, Julio A. P. and Rakočević, Zlatko Lj. and Tatarova, Elena and Teodoro, Orlando M. N. D.", year = "2020", abstract = "Stainless steel and copper technical substrates have been coated by free standing graphene using electrophoretic deposition technique, with the final goal to obtain chemically inert low secondary electron emission surfaces. This class of materials is of utmost interest in future accelerators in order to increase further the flux of accelerated charged particles in the beam. The measured maximum total electron yield of pristine graphene, which has been previously characterized by electron microscopies and X-ray photoelectron spectroscopy, appears to be about 1.0. The deposition parameters have been optimized in order to obtain surfaces with lowest total electron yield, but also composition and morphology close to that of pristine graphene. When applying these optimized deposition parameters graphene coatings on two substrates, i.e. stainless steel and copper, the maximum total electron yield of about 1.04 was obtained. The composition of coatings and the relative amounts of sp2 bonds are slightly worse than those of the pristine graphene, while the surface morphology appears to be the same. Annealing at 150 °C for 64 h in high vacuum, showed that vacuum baking did not affect considerably the electron emission properties of the coatings. © 2019 Elsevier B.V.", journal = "Applied Surface Science", title = "Low total electron yield graphene coatings produced by electrophoretic deposition", volume = "504", pages = "143870", doi = "10.1016/j.apsusc.2019.143870" }
Aguincha, R., Bundaleski, N., Bundaleska, N., Novaković, M. M., Henriques, J. A. P., Rakočević, Z. Lj., Tatarova, E.,& Teodoro, O. M. N. D.. (2020). Low total electron yield graphene coatings produced by electrophoretic deposition. in Applied Surface Science, 504, 143870. https://doi.org/10.1016/j.apsusc.2019.143870
Aguincha R, Bundaleski N, Bundaleska N, Novaković MM, Henriques JAP, Rakočević ZL, Tatarova E, Teodoro OMND. Low total electron yield graphene coatings produced by electrophoretic deposition. in Applied Surface Science. 2020;504:143870. doi:10.1016/j.apsusc.2019.143870 .
Aguincha, R., Bundaleski, Nenad, Bundaleska, N, Novaković, Mirjana M., Henriques, Julio A. P., Rakočević, Zlatko Lj., Tatarova, Elena, Teodoro, Orlando M. N. D., "Low total electron yield graphene coatings produced by electrophoretic deposition" in Applied Surface Science, 504 (2020):143870, https://doi.org/10.1016/j.apsusc.2019.143870 . .