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 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. View Full-Text

Keywords: Ge quantum wires; 3D ordering; self-assembly; quantum wire network; quantum confinement

▼ Show Figures

Figure 1

This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

Share and Cite

MDPI and ACS Style

Basioli, L.; Tkalčević, M.; Bogdanović-Radović, I.; Dražić, G.; Nadazdy, P.; Siffalovic, P.; Salamon, K.; Mičetić, M. 3D Networks of Ge Quantum Wires in Amorphous Alumina Matrix. Nanomaterials 2020, 10, 1363. https://doi.org/10.3390/nano10071363

AMA Style

Basioli L, Tkalčević M, Bogdanović-Radović I, Dražić G, Nadazdy P, Siffalovic P, Salamon K, Mičetić M. 3D Networks of Ge Quantum Wires in Amorphous Alumina Matrix. Nanomaterials. 2020; 10(7):1363. https://doi.org/10.3390/nano10071363

Chicago/Turabian Style

Basioli, Lovro, Marija Tkalčević, Iva Bogdanović-Radović, Goran Dražić, Peter Nadazdy, Peter Siffalovic, Krešimir Salamon, and Maja Mičetić. 2020. "3D Networks of Ge Quantum Wires in Amorphous Alumina Matrix" Nanomaterials 10, no. 7: 1363. https://doi.org/10.3390/nano10071363

Find Other Styles

Note that from the first issue of 2016, MDPI journals use article numbers instead of page numbers. See further details here.

Article Metrics

Abstract views Pdf views Html views

Article Menu

3D Networks of Ge Quantum Wires in Amorphous Alumina Matrix

Abstract

Share and Cite

Article Metrics

Article Access Statistics

Article Access Map by Country/Region

Further Information

Guidelines

MDPI Initiatives

Follow MDPI