Working Paper Article Version 1 This version is not peer-reviewed

TiO2 Self-Assembled, Thin-Walled Nanotube Arrays for Photonic Applications

Version 1 : Received: 25 March 2019 / Approved: 26 March 2019 / Online: 26 March 2019 (10:41:49 CET)

A peer-reviewed article of this Preprint also exists.

David, C. TiO2 Self-Assembled, Thin-Walled Nanotube Arrays for Photonic Applications. Materials 2019, 12, 1332. David, C. TiO2 Self-Assembled, Thin-Walled Nanotube Arrays for Photonic Applications. Materials 2019, 12, 1332.

Journal reference: Materials 2019, 12, 1332
DOI: 10.3390/ma12081332

Abstract

Two-dimensional arrays of hollow nanotubes made of TiO2 are a promising platform for sensing, spectroscopy and light harvesting applications. Their straightforward fabrication via electrochemical anodization, growing nanotube pillars of finite length from a Ti foil, allows precise tailoring of geometry and, thus, material properties. We investigate these photonic crystal structures with respect to reduction of front surface reflection, achievable field enhancement, and photonic bands. With the Rigorous Coupled Wave Analysis (RCWA), we study the optical response of photonic crystals made of thin-walled nanotubes relative to the bare Ti foil substrate, including under additional charge carrier doping.

Subject Areas

TiO2 nanotubes; photonic crystals; optical engineering; theory and simulation

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