СУЛЬФИД ТИТАНА (VI)

Description

The product is supplied under the name “Titanium (VI) sulfide” with the gross formula S3Ti, which corresponds to the composition of titanium trisulfide TiS3. This is a layered compound of a transition metal with a chalcogen: the layers are interconnected by weak van der Waals forces, so the material is split into thin plates up to several atomic layers. TiS3 is an n-type semiconductor, interesting for two-dimensional electronics and optoelectronics.

Basic Attributes

• CAS No.: 12423-80-2
• Chemical formula: S3Ti
• Molecular Weight: 144.06
• Exact weight: 143.86400
• PSA specifications: 34.1
• XLogP3: 1.94460

Physical properties and characteristics of the material

• Conductivity type: n-type semiconductor
• Direct bandgap of mono- and few-layer samples: 1.0 ± 0.1 eV
• Estimates for individual works: electron gap 1.2 eV, optical gap 1.07 eV, exciton binding energy 130 meV
• Anisotropy: reduced symmetry in the plane of the layer gives a quasi-one-dimensional nature of optical and electronic properties; the ratio of mobility in two directions in the plane reaches 7.6 at low temperatures
• Linear dichroism: transmittance ratio in two polarizations up to 30
• Mobility in field-effect transistors at room temperature: 18–24 cm2/(V s), on/off current ratio up to 300
• After atomic layer deposition treatment: mobility up to 43 cm2/(V s), on/off ratio up to 7000
• Nonlinear optical properties noted

Scope of application

• field effect transistors on two-dimensional materials
• photodetectors, including sensitive ones in the infrared region
• elements with polarization selectivity - due to strong linear dichroism
• object of research in the field of nonlinear optics and thermoelectric properties of anisotropic materials

Safety Information

• Packing level: III
• Hazard category: 4.3 - substances that emit flammable gases upon contact with water
• Transport codes: 3134
• Hazard class code: 36/37/38 - irritating to eyes, respiratory system and skin
• Safety instructions: 26, 37/39

Storage and handling

Hazard category 4.3 defines the main requirement: complete protection from moisture. The container is sealed, the warehouse is dry, there should be no sources of water or water-containing reagents nearby; When extinguishing a fire, water is not used. Work with powder is carried out with gloves, safety glasses and exhaust ventilation; When dusting occurs, use an anti-aerosol respirator. Preparation of samples for research, splitting of crystals and deposition of films are carried out in an inert atmosphere.