Temperature dependent Raman spectroscopy of titanium trisulfide (TiS3) nanoribbons and nanosheets

Abstract

Titanium trisulfide (TiS3) has recently attracted the interest of the 2D community as it presents a direct bandgap of ~1.0 eV, shows remarkable photoresponse, and has a predicted carrier mobility up to 10000 cm2V-1 s-1. However, a study of the vibrational properties of TiS3, relevant to understanding the electron-phonon interaction which can be the main mechanism limiting the charge carrier mobility, is still lacking. In this work, we take the first steps to study the vibrational properties of TiS3 through temperature dependent Raman spectroscopy measurements of TiS3 nanoribbons and nanosheets. Our investigation shows that all the Raman modes linearly soften (red shift) as the temperature increases from 88 K to 570 K, due to the anharmonic vibrations of the lattice which also includes contributions from the lattice thermal expansion. This softening with the temperature of the TiS3 modes is more pronounced than that observed in other 2D semiconductors such as MoS2, MoSe2, WSe2 or black phosphorus (BP). This marked temperature dependence of the Raman could be exploited to determine the temperature of TiS3 nanodevices by using Raman spectroscopy as a non-invasive and local thermal probe. Interestingly, the TiS3 nanosheets show a stronger temperature dependence of the Raman modes than the nanoribbons, which we attribute to a lower interlayer coupling in the nanosheets.

19 pages, 6 figures, 1 table

References in corpus (10)

• Electric Field Effect in Atomically Thin Carbon Films
• Two Dimensional Atomic Crystals
• Two-Dimensional Material Nanophotonics
• Photocurrent generation with two-dimensional van der Waals semiconductors
• Photovoltaic and photothermoelectric effect in a double-gated WSe2 device
• TiS3 transistors with tailored morphology and electrical properties
• Ultrahigh photoresponse of few-layer TiS3 nanoribbon transistors
• Temperature dependent Raman spectroscopy of titanium trisulfide (TiS3) nanoribbons and nanosheets
• Electronic bandgap and exciton binding energy of layered semiconductor TiS3
• Torsional Strain of TaS${}_3$ Whiskers on the Charge-Density Waves Depinning

Cited by in corpus (7)

• Pd${}_2$Se${}_3$ Monolayer: A Promising Two Dimensional Thermoelectric Material with Ultralow Lattice Thermal Conductivity and High Power Factor
• Temperature dependent Raman spectroscopy of titanium trisulfide (TiS3) nanoribbons and nanosheets
• High current density electrical breakdown of TiS3 nanoribbon-based field-effect transistors
• Observation of charge density wave transition in TaSe3 mesowires
• Dielectrophoretic assembly of liquid-phase-exfoliated TiS3 nanoribbons for photodetecting applications
• Raman Fingerprint of Pressure-Induced Phase Transitions in TiS3 Nanoribbons: Implications for Thermal Measurements under Extreme Stress Conditions
• Tunable Photodetectors via in situ Thermal Conversion of TiS${}_3$ to TiO${}_2$