RT Journal Article
T1 Building nanoplatelet α-MoO3 films: A high quality crystal anisotropic 2D material for integration
A1 Nieto Piñero, María Eva
A1 Negrete Aragón, S.
A1 Muñoz Ochando, Isabel
A1 Vondráček, M.
A1 Galiana, Beatriz
A1 Peláez de Fuentes, Ramón Javier
A1 Maté Naya, Belén
A1 López De Andrés, María Sol
A1 Serna Galán, Rosalía
AB The successful development of nanoplatelet α-MoO3 −films with wavelength-dependent in-plane and out-of-plane birefringence both in the visible and in the medium infrared is demonstrated. The films are prepared by a two-step process starting from structurally amorphous and continuous substoichiometric MoO3-X followed by isothermal annealing at low temperature (250 °C) to yield the formation of a dense network of large α-MoO3 2D nanoplatelets lying in-plane with no overlapping. These α-MoO3 crystals form a film with excellent thickness uniformity (20 nm) and are oriented with the [0 1 0] crystallographic direction parallel to the substrate normal. Finally, we report the film anisotropic optical complex refractive index, both parallel and perpendicular to the plane the full spectral range from 0.7 to 5 eV as determined by spectroscopic ellipsometry, and their characteristic in-plane phonon mode in the IR from FTIR measurements. These results show a promising pathway to the creation of highly functional anisotropic α-MoO3 2D films suitable for the development of integrated nanostructured photonic components.
PB Elsevier
SN 0169-4332
YR 2024
FD 2024-11-01
LK https://hdl.handle.net/20.500.14352/107967
UL https://hdl.handle.net/20.500.14352/107967
LA eng
NO Nieto-Pinero, E., et al. «Building Nanoplatelet α-MoO3 Films: A High Quality Crystal Anisotropic 2D Material for Integration». Applied Surface Science, vol. 672, noviembre de 2024, p. 160871, https://doi.org/10.1016/j.apsusc.2024.160871
NO Agencia Estatal de Investigación
NO European Regional Development Fund
NO CSIC
NO MCIN/AEI/10.13039/501100011033
NO Universidad Nacional Autónoma de México
NO European Union
DS Docta Complutense
RD 8 abr 2025