Print Email Facebook Twitter Large birefringence and linear dichroism in TiS3 nanosheets Title Large birefringence and linear dichroism in TiS3 nanosheets Author Papadopoulos, N. (TU Delft QN/Steele Lab; Kavli institute of nanoscience Delft) Frisenda, Riccardo (Instituto Madrilenõ de Estudios Avanzados en Nanociencia (IMDEA-Nanociencia)) Biele, Robert (Universidad del Paıs Vasco) Flores, Eduardo (Universidad Autónoma de Madrid) Ares, Jose R. (Universidad Autónoma de Madrid) Sánchez, Carlos (Universidad Autónoma de Madrid) van der Zant, H.S.J. (TU Delft QN/van der Zant Lab; Kavli institute of nanoscience Delft) Ferrer, Isabel J. (Universidad Autónoma de Madrid) D'Agosta, Roberto (Basque Foundation for Science; Universidad del Paıs Vasco) Castellanos-Gomez, Andres (Instituto de Ciencia de Materiales de Madrid (ICMM)) Date 2018 Abstract TiS3 nanosheets have proven to be promising candidates for ultrathin optoelectronic devices due to their direct narrow band-gap and the strong light-matter interaction. In addition, the marked in-plane anisotropy of TiS3 is appealing for the fabrication of polarization sensitive optoelectronic devices. Herein, we study the optical contrast of TiS3 nanosheets of variable thickness on SiO2/Si substrates, from which we obtain the complex refractive index in the visible spectrum. We find that TiS3 exhibits very large birefringence, larger than that of well-known strong birefringent materials like TiO2 or calcite, and linear dichroism. These findings are in qualitative agreement with ab initio calculations that suggest an excitonic origin for the birefringence and linear dichroism of the material. To reference this document use: http://resolver.tudelft.nl/uuid:05ab399f-4568-418d-9552-e1a077e666e4 DOI https://doi.org/10.1039/c8nr03616k Embargo date 2018-12-14 ISSN 2040-3364 Source Nanoscale, 10 (26), 12424-12429 Bibliographical note Green Open Access added to TU Delft Institutional Repository ‘You share, we take care!’ – Taverne project https://www.openaccess.nl/en/you-share-we-take-care Otherwise as indicated in the copyright section: the publisher is the copyright holder of this work and the author uses the Dutch legislation to make this work public. Part of collection Institutional Repository Document type journal article Rights © 2018 N. Papadopoulos, Riccardo Frisenda, Robert Biele, Eduardo Flores, Jose R. Ares, Carlos Sánchez, H.S.J. van der Zant, Isabel J. Ferrer, Roberto D'Agosta, Andres Castellanos-Gomez Files PDF c8nr03616ktaverne.pdf 4.08 MB Close viewer /islandora/object/uuid:05ab399f-4568-418d-9552-e1a077e666e4/datastream/OBJ/view