Szczegóły publikacji
Opis bibliograficzny
The effect of quasi-free graphene layer on the electrical transport properties of sandwich-like graphene / Co nanoparticles / graphene structure / V. Bayev, M. Rybin, I. Svito, J. PRZEWOŹNIK, Cz. KAPUSTA, J. Kasiuk, S. Vorobyova, A. Konakov, E. Obraztsova // Applied Surface Science ; ISSN 0169-4332. — Tytuł poprz.: Applications of Surface Science. — 2022 — vol. 579 art. no. 152119, s. 1–13. — Bibliogr. s. 12–13, Abstr. — Publikacja dostępna online od: 2021-12-04
Autorzy (9)
- Bayev V. G.
- Rybin M.
- Svito Ivan
- AGHPrzewoźnik Janusz
- AGHKapusta Czesław
- Kasiuk Julia V.
- Vorobyova Svetlana A.
- Konakov A. O.
- Obraztsova E.
Słowa kluczowe
Dane bibliometryczne
| ID BaDAP | 138440 |
|---|---|
| Data dodania do BaDAP | 2022-01-05 |
| Tekst źródłowy | URL |
| DOI | 10.1016/j.apsusc.2021.152119 |
| Rok publikacji | 2022 |
| Typ publikacji | artykuł w czasopiśmie |
| Otwarty dostęp |  |
| Czasopismo/seria | Applied Surface Science |
Abstract
The paper reports on the charge transport in the sandwich-like graphene / Co nanoparticles / graphene structure (G/CoNPs/G). It is fabricated by combining the electrochemical deposition of Co nanoparticles onto a single layer CVD graphene and their capping with another graphene layer. The isolated semi-spherical, surface oxidized Co NPs of 250 nm in diameter serve as a support for the top graphene layer and provide its suspended state confirmed by atomic force microscopy revealing periodic ripples on its surface. A high optical transparency of 92.4% is found for the G/CoNPs/G sandwich. The observed twofold reduction in the sheet resistance with a ∼ 1.5 times increase in the positive magnetoresistive effect for G/CoNPs/G compared to the pristine graphene is attributed to the suppression of carrier scattering due to the substrate. From the Hall effect measurements, a predominant role of the top graphene layer in the charge transport in G/CoNPs/G is established, with a significantly increased carrier mobility µ∼1800 cm2/(V·s). An elastic intervalley scattering length estimated from the magnetoresistance results is found to be three times increased in G/CoNPs/G, indicating that the top graphene layer is almost unaffected by the substrate. The proposed technology looks promising for possible optoelectronic and magneto-optical applications.
