Por favor, use este identificador para citar o enlazar a este item:
http://hdl.handle.net/10261/209472
COMPARTIR / EXPORTAR:
SHARE CORE BASE | |
Visualizar otros formatos: MARC | Dublin Core | RDF | ORE | MODS | METS | DIDL | DATACITE | |
Título: | Tunable photodetectors via in situ thermal conversion of TiS3 to TiO2 |
Autor: | Ghasemi, Foad; Frisenda, Riccardo; Flores, Eduardo CSIC ORCID; Papadopoulos, Nikos; Biele, Robert CSIC ORCID; Pérez de Lara, David; Zant, Herre S. J. van der; Watanabe, Kenji; Taniguchi, Takashi; D’Agosta, Roberto; Ares, José R.; Sánchez, Carlos; Ferrer, Isabel J.; Castellanos-Gómez, Andrés CSIC ORCID | Palabras clave: | 2D materials Photodetectors oxidation TiS3 TiO2 Raman spectroscopy DFT GW |
Fecha de publicación: | 9-abr-2020 | Editor: | Multidisciplinary Digital Publishing Institute | Citación: | Nanomaterials 10(4): 711 (2020) | Resumen: | In two-dimensional materials research, oxidation is usually considered as a common source for the degradation of electronic and optoelectronic devices or even device failure. However, in some cases a controlled oxidation can open the possibility to widely tune the band structure of 2D materials. In particular, we demonstrate the controlled oxidation of titanium trisulfide (TiS<sub>3</sub>), a layered semicon-ductor that has attracted much attention recently thanks to its quasi-1D electronic and optoelectron-ic properties and its direct bandgap of 1.1 eV. Heating TiS<sub>3</sub> in air above 300 °C gradually converts it into TiO<sub>2</sub>, a semiconductor with a wide bandgap of 3.2 eV with applications in photo-electrochemistry and catalysis. In this work, we investigate the controlled thermal oxidation of indi-vidual TiS<sub>3</sub> nanoribbons and its influence on the optoelectronic properties of TiS<sub>3</sub>-based photodetec-tors. We observe a step-wise change in the cut-off wavelength from its pristine value ~1000 nm to 450 nm after subjecting the TiS<sub>3</sub> devices to subsequent thermal treatment cycles. Ab-initio and many-body calculations confirm an increase in the bandgap of titanium oxysulfide (TiO<sub>2-x</sub>S<sub>x</sub>) when in-creasing the amount of oxygen and reducing the amount of sulfur. | Versión del editor: | https://doi.org/10.3390/nano10040711 | URI: | http://hdl.handle.net/10261/209472 | DOI: | 10.3390/nano10040711 | E-ISSN: | 2079-4991 |
Aparece en las colecciones: | (ICMM) Artículos |
Ficheros en este ítem:
Fichero | Descripción | Tamaño | Formato | |
---|---|---|---|---|
tunable_photodetectors_TiS3_TiO2.pdf | 2,18 MB | Adobe PDF | Visualizar/Abrir |
CORE Recommender
PubMed Central
Citations
5
checked on 15-may-2024
SCOPUSTM
Citations
15
checked on 10-may-2024
WEB OF SCIENCETM
Citations
15
checked on 25-feb-2024
Page view(s)
140
checked on 14-may-2024
Download(s)
206
checked on 14-may-2024