prikaz prve stranice dokumenta Optical absorption in array of Ge/Al-shell nanoparticles in an Alumina matrix
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Scientific paper - Original scientific paper
Optical absorption in array of Ge/Al-shell nanoparticles in an Alumina matrix
Scientific Reports, 10 (2020), 1; 65. https://doi.org/10.1038/s41598-019-56673-8
Despoja, Vito; Basioli, Lovro; Parramon, Jordi Sancho; Mičetić, Maja

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Despoja, V., Basioli, L., Parramon, J. S. & Mičetić, M. (2020). Optical absorption in array of Ge/Al-shell nanoparticles in an Alumina matrix. Scientific Reports, 10. (1). doi: 10.1038/s41598-019-56673-8

Despoja, Vito, et al. "Optical absorption in array of Ge/Al-shell nanoparticles in an Alumina matrix." Scientific Reports, vol. 10, no. 1, 2020. https://doi.org/10.1038/s41598-019-56673-8

Despoja, Vito, Lovro Basioli, Jordi Sancho Parramon and Maja Mičetić. "Optical absorption in array of Ge/Al-shell nanoparticles in an Alumina matrix." Scientific Reports 10, no. 1 (2020). https://doi.org/10.1038/s41598-019-56673-8

Despoja, V., et al. (2020) 'Optical absorption in array of Ge/Al-shell nanoparticles in an Alumina matrix', Scientific Reports, 10(1). doi: 10.1038/s41598-019-56673-8

Despoja V, Basioli L, Parramon JS, Mičetić M. Optical absorption in array of Ge/Al-shell nanoparticles in an Alumina matrix. Scientific Reports [Internet]. 2020 [cited 2024 November 27];10(1). doi: 10.1038/s41598-019-56673-8

V. Despoja, L. Basioli, J. S. Parramon and M. Mičetić, "Optical absorption in array of Ge/Al-shell nanoparticles in an Alumina matrix", Scientific Reports, vol. 10, no. 1, 2020. [Online]. Available at: https://urn.nsk.hr/urn:nbn:hr:217:489667. [Accessed: 27 November 2024]

Metadata
Title (english)Optical absorption in array of Ge/Al-shell nanoparticles in an Alumina matrix
AuthorVito Despoja
AuthorLovro Basioli
AuthorJordi Sancho Parramon
AuthorMaja Mičetić
Author's institutionUniversity of Zagreb
Faculty of Science
(Department of Physics)
Scientific / art field,
discipline and subdiscipline		NATURAL SCIENCES
Physics
Abstract (english)
The absorption spectra in array of Ge, Al and Ge/Al-shell nanoparticles immersed in alumina (Al2O3) matrix is calculated in framework of ab initio macroscopic dielectric model. It is demonstrated that absorption is strongly enhanced when germanium nanospheres are encapsulated by Al-shell. Two absorption peaks, appearing in the spectra, correspond to low energy ω+ and high energy ω− plasmons which lie in visible and ultraviolet frequency range, respectively. It is demonstrated that in Ge/Al-shell composite the ω+ plasmon exists only because quantum confinement effect which provides larger Ge band gap (Δ ~ 1.5 eV) and thus prevent decay of ω+ plasmon to continuum of interband electron-hole excitation in semiconducting core. Absorption in visible frequency range enhances additional 3 times when alumina is replaced by large dielectric constant insulator, such as SiC, and additional 6 times when Ge core is replaced by wide band-gap insulator, such as Si3N4. Strong enhancement of optical absorption in visible frequency range make this composites suitable for optoelectronic application, such as solar cells or light emitting devices. The simulated plasmon peaks are brought in connection with peaks appearing in ellipsometry measurements.
Keywords (english)
Languageenglish
Publication typeScientific paper - Original scientific paper
Publication statusPublished
Peer reviewPeer review - international
Publication versionPublished version
Journal titleScientific Reports
Numberingvol. 10, no. 1, 65
p-ISSN2045-2322
DOIhttps://doi.org/10.1038/s41598-019-56673-8
URN:NBNurn:nbn:hr:217:489667
Publication2020
ProjectNumber: IP-2018-01-3633
Title (croatian): 3D mreže kompleksnih Ge-baziranih nanostruktura u staklima: svojstva i primjene
Acronym: NetNano
Leader: Maja Mičetić
Jurisdiction: Croatia
Funding stream: IP
ProjectNumber: KK.01.1.1.01.0004
Title (croatian): Provedba vrhunskih istraživanja u sklopu Znanstvenog centra izvrsnosti za kvantne i kompleksne sustave te reprezentacije Liejevih algebri
Acronym: ZCI QuantiXLie
Leader: Hrvoje Buljan
Jurisdiction: Croatia
Funding stream: ZC
Document URLhttps://www.nature.com/articles/s41598-019-56673-8
Type of resourceText
Access conditionsOpen access
Terms of useLicence Attribution 4.0 International (CC BY 4.0) icon
Public noteOpen Access. This article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made. The images or other third party material in this article are included in the article’s Creative Commons license, unless indicated otherwise in a credit line to the material. If material is not included in the article’s Creative Commons license and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this license, visit http://creativecommons.org/licenses/by/4.0/. Received 07 June 2019; accepted 11 December 2019; published 09 January 2020.
Created on2020-10-13 13:40:38