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...
Main Authors: | , , , , , , , |
---|---|
Format: | Article |
Language: | English |
Published: |
MDPI AG
2020-07-01
|
Series: | Nanomaterials |
Subjects: | |
Online Access: | https://www.mdpi.com/2079-4991/10/7/1363 |
_version_ | 1797562629228593152 |
---|---|
author | Lovro Basioli Marija Tkalčević Iva Bogdanović-Radović Goran Dražić Peter Nadazdy Peter Siffalovic Krešimir Salamon Maja Mičetić |
author_facet | Lovro Basioli Marija Tkalčević Iva Bogdanović-Radović Goran Dražić Peter Nadazdy Peter Siffalovic Krešimir Salamon Maja Mičetić |
author_sort | Lovro Basioli |
collection | DOAJ |
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. |
first_indexed | 2024-03-10T18:30:42Z |
format | Article |
id | doaj.art-87ff4fea5e3047cab56553d71a08fd64 |
institution | Directory Open Access Journal |
issn | 2079-4991 |
language | English |
last_indexed | 2024-03-10T18:30:42Z |
publishDate | 2020-07-01 |
publisher | MDPI AG |
record_format | Article |
series | Nanomaterials |
spelling | doaj.art-87ff4fea5e3047cab56553d71a08fd642023-11-20T06:37:49ZengMDPI AGNanomaterials2079-49912020-07-01107136310.3390/nano100713633D Networks of Ge Quantum Wires in Amorphous Alumina MatrixLovro Basioli0Marija Tkalčević1Iva Bogdanović-Radović2Goran Dražić3Peter Nadazdy4Peter Siffalovic5Krešimir Salamon6Maja Mičetić7Rudjer Boskovic Institute, 10000 Zagreb, CroatiaRudjer Boskovic Institute, 10000 Zagreb, CroatiaRudjer Boskovic Institute, 10000 Zagreb, CroatiaNational Institute of Chemistry, 1001 Ljubljana, SloveniaInstitute of Physics, Slovak Academy of Sciences, 845 11 Bratislava, SlovakiaInstitute of Physics, Slovak Academy of Sciences, 845 11 Bratislava, SlovakiaRudjer Boskovic Institute, 10000 Zagreb, CroatiaRudjer Boskovic Institute, 10000 Zagreb, CroatiaRecently 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.https://www.mdpi.com/2079-4991/10/7/1363Ge quantum wires3D orderingself-assemblyquantum wire networkquantum confinement |
spellingShingle | Lovro Basioli Marija Tkalčević Iva Bogdanović-Radović Goran Dražić Peter Nadazdy Peter Siffalovic Krešimir Salamon Maja Mičetić 3D Networks of Ge Quantum Wires in Amorphous Alumina Matrix Nanomaterials Ge quantum wires 3D ordering self-assembly quantum wire network quantum confinement |
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 | Ge quantum wires 3D ordering self-assembly quantum wire network quantum confinement |
url | https://www.mdpi.com/2079-4991/10/7/1363 |
work_keys_str_mv | AT lovrobasioli 3dnetworksofgequantumwiresinamorphousaluminamatrix AT marijatkalcevic 3dnetworksofgequantumwiresinamorphousaluminamatrix AT ivabogdanovicradovic 3dnetworksofgequantumwiresinamorphousaluminamatrix AT gorandrazic 3dnetworksofgequantumwiresinamorphousaluminamatrix AT peternadazdy 3dnetworksofgequantumwiresinamorphousaluminamatrix AT petersiffalovic 3dnetworksofgequantumwiresinamorphousaluminamatrix AT kresimirsalamon 3dnetworksofgequantumwiresinamorphousaluminamatrix AT majamicetic 3dnetworksofgequantumwiresinamorphousaluminamatrix |