Tl1 S1

semiconductor

· Tl1 S1

Thallium sulfide (Tl₁S₁) is a binary semiconductor compound belonging to the chalcogenide family, characterized by ionic-covalent bonding between thallium and sulfur atoms. This material is primarily of research interest for infrared optics and photoelectric applications, where its narrow bandgap and tunable electronic properties offer potential advantages in thermal imaging and light detection systems. Thallium sulfide compounds are less commonly used in mainstream manufacturing compared to alternatives like cadmium telluride or lead sulfide, but remain valuable in specialized optoelectronic research due to their unique band structure and optical response in the infrared spectrum.

infrared detectorsphotoelectric sensorssemiconductor researchthermal imaging systemsoptoelectronic devicesbandgap engineering

Compliance & Regulations

?EAR?Conflict Free?RoHS?REACH?TSCA?Prop 65

Units:

si imperial

Property	Value	Unit	Conditions	Source
Bulk Modulus(K)	6,589.5	ksi	—
Shear Modulus(G)	1,273.4	ksi	—

Verified Unverified Low confidence (<80%) Link to source

Property	Value	Unit	Conditions	Source
Band Gap(Eg)	0.02090	eV	—

Verified Unverified Low confidence (<80%) Link to source

Property	Value	Unit	Conditions	Source
Formation Energy(ΔHf)	-0.06600	eV/atom	—

Verified Unverified Low confidence (<80%) Link to source

Regulatory Screening

Environmental

Export Control

RoHS, REACH, and Prop 65 statuses are validated against official substance lists (ECHA SVHC Candidate List, OEHHA Prop 65, RoHS Annex II). Other regulations are estimated from composition and material classification. All screening is a starting point for due diligence — always verify with your supplier before making compliance decisions.

Tl1 S1

Mechanical Properties

Electrical Properties

Other Properties

Regulatory Screening

Environmental

Export Control