Issue 19, 2021
From the journal:

Nanoscale

Polarization-dependent optical band gap energy of aligned semiconducting titanium oxide nanowire deposits†

Merve Taner Camci,a   Matthias Pauly, ORCID logo a   Christophe Lefevre,b   Corinne Bouillet,b   Mounir Maaloum,a   Gero Decher*acde  and  David Martel ORCID logo *a  

* Corresponding authors

a Université de Strasbourg, CNRS, Institut Charles Sadron (ICS), UPR 22, F-67000 Strasbourg, France
E-mail: decher@unistra.fr, david.martel@ics-cnrs.unistra.fr

b Université de Strasbourg, CNRS, Institut de Physique et de Chimie des Matériaux de Strasbourg (IPCMS), UMR 7504, F-67000 Strasbourg, France

c Faculté de Chimie, Université de Strasbourg, 1 rue Blaise Pascal, F-67008 Strasbourg, France

d International Center for Frontier Research in Chemistry, 8 allée Gaspard Monge, F-67083 Strasbourg, France

e International Center for Materials Nanoarchitectonics, 1-1 Namiki Tsukuba, Ibaraki 305-0044, Japan

Abstract

Thin deposits of aligned semiconducting titanium oxide and of zinc oxide nanowires are prepared by grazing incidence spraying on transparent substrates. By measuring the transmittance of linearly polarized light of these anisotropic assemblies as compared to that of randomly oriented nanowires and of spherical nanoparticles, we find that titanium oxide nanowires exhibit an orientation-dependent variation of the apparent optical band gap energy at room temperature (>100 meV), depending on the direction of the polarization of the light with respect to the direction of alignment of the nanowires.

Graphical abstract: Polarization-dependent optical band gap energy of aligned semiconducting titanium oxide nanowire deposits

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Article information

DOI
https://doi.org/10.1039/D1NR01236C
Article type
Paper
Submitted
24 Feb 2021
Accepted
27 Apr 2021
First published
28 Apr 2021

Nanoscale, 2021,13, 8958-8965

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Polarization-dependent optical band gap energy of aligned semiconducting titanium oxide nanowire deposits

M. Taner Camci, M. Pauly, C. Lefevre, C. Bouillet, M. Maaloum, G. Decher and D. Martel, Nanoscale, 2021, 13, 8958 DOI: 10.1039/D1NR01236C

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