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3D Networks of Ge Quantum Wires in Amorphous Alumina Matrix
Recently demonstrated 3D networks of Ge quantum wires in an alumina matrix, produced by a simple magnetron sputtering deposition enables the realization of nanodevices with tailored conductivity and opto-electrical properties. Their growth and ordering mechanisms as well as possibilities in the desi...
Autores principales: | , , , , , , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
MDPI
2020
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Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7407503/ https://www.ncbi.nlm.nih.gov/pubmed/32668659 http://dx.doi.org/10.3390/nano10071363 |
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author | Basioli, Lovro Tkalčević, Marija Bogdanović-Radović, Iva Dražić, Goran Nadazdy, Peter Siffalovic, Peter Salamon, Krešimir Mičetić, Maja |
author_facet | Basioli, Lovro Tkalčević, Marija Bogdanović-Radović, Iva Dražić, Goran Nadazdy, Peter Siffalovic, Peter Salamon, Krešimir Mičetić, Maja |
author_sort | Basioli, Lovro |
collection | PubMed |
description | Recently demonstrated 3D networks of Ge quantum wires in an alumina matrix, produced by a simple magnetron sputtering deposition enables the realization of nanodevices with tailored conductivity and opto-electrical properties. Their growth and ordering mechanisms as well as possibilities in the design of their structure have not been explored yet. Here, we investigate a broad range of deposition conditions leading to the formation of such quantum wire networks. The resulting structures show an extraordinary tenability of the networks’ geometrical properties. These properties are easily controllable by deposition temperature and Ge concentration. The network’s geometry is shown to retain the same basic structure, adjusting its parameters according to Ge concentration in the material. In addition, the networks’ growth and ordering mechanisms are explained. Furthermore, optical measurements demonstrate that the presented networks show strong confinement effects controllable by their geometrical parameters. Interestingly, energy shift is the largest for the longest quantum wires, and quantum wire length is the main parameter for control of confinement. Presented results demonstrate a method to produce unique materials with designable properties by a simple self-assembled growth method and reveal a self-assembling growth mechanism of novel 3D ordered Ge nanostructures with highly designable optical properties. |
format | Online Article Text |
id | pubmed-7407503 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2020 |
publisher | MDPI |
record_format | MEDLINE/PubMed |
spelling | pubmed-74075032020-08-25 3D Networks of Ge Quantum Wires in Amorphous Alumina Matrix Basioli, Lovro Tkalčević, Marija Bogdanović-Radović, Iva Dražić, Goran Nadazdy, Peter Siffalovic, Peter Salamon, Krešimir Mičetić, Maja Nanomaterials (Basel) Article Recently demonstrated 3D networks of Ge quantum wires in an alumina matrix, produced by a simple magnetron sputtering deposition enables the realization of nanodevices with tailored conductivity and opto-electrical properties. Their growth and ordering mechanisms as well as possibilities in the design of their structure have not been explored yet. Here, we investigate a broad range of deposition conditions leading to the formation of such quantum wire networks. The resulting structures show an extraordinary tenability of the networks’ geometrical properties. These properties are easily controllable by deposition temperature and Ge concentration. The network’s geometry is shown to retain the same basic structure, adjusting its parameters according to Ge concentration in the material. In addition, the networks’ growth and ordering mechanisms are explained. Furthermore, optical measurements demonstrate that the presented networks show strong confinement effects controllable by their geometrical parameters. Interestingly, energy shift is the largest for the longest quantum wires, and quantum wire length is the main parameter for control of confinement. Presented results demonstrate a method to produce unique materials with designable properties by a simple self-assembled growth method and reveal a self-assembling growth mechanism of novel 3D ordered Ge nanostructures with highly designable optical properties. MDPI 2020-07-13 /pmc/articles/PMC7407503/ /pubmed/32668659 http://dx.doi.org/10.3390/nano10071363 Text en © 2020 by the authors. Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (http://creativecommons.org/licenses/by/4.0/). |
spellingShingle | Article Basioli, Lovro Tkalčević, Marija Bogdanović-Radović, Iva Dražić, Goran Nadazdy, Peter Siffalovic, Peter Salamon, Krešimir Mičetić, Maja 3D Networks of Ge Quantum Wires in Amorphous Alumina Matrix |
title | 3D Networks of Ge Quantum Wires in Amorphous Alumina Matrix |
title_full | 3D Networks of Ge Quantum Wires in Amorphous Alumina Matrix |
title_fullStr | 3D Networks of Ge Quantum Wires in Amorphous Alumina Matrix |
title_full_unstemmed | 3D Networks of Ge Quantum Wires in Amorphous Alumina Matrix |
title_short | 3D Networks of Ge Quantum Wires in Amorphous Alumina Matrix |
title_sort | 3d networks of ge quantum wires in amorphous alumina matrix |
topic | Article |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7407503/ https://www.ncbi.nlm.nih.gov/pubmed/32668659 http://dx.doi.org/10.3390/nano10071363 |
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