Tl2S

semiconductor

· Tl2S

Thallium sulfide (Tl₂S) is a binary semiconductor compound belonging to the chalcogenide material family, characterized by ionic bonding between thallium and sulfur. While primarily a research material rather than a mainstream industrial semiconductor, Tl₂S has been investigated for infrared detection and photosensitive applications due to its narrow bandgap and strong light absorption in the infrared region. Engineers consider Tl₂S and related thallium compounds where conventional semiconductors (Si, GaAs) are insufficient for long-wavelength infrared sensing, though toxicity concerns and limited commercial maturity restrict adoption compared to alternatives like HgCdTe or lead chalcogenides.

infrared detectorsphotosensitive devicesresearch semiconductorsthermal imagingspectroscopic sensorschalcogenide optoelectronics

Compliance & Regulations

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

Units:

si imperial

Property	Value	Unit	Conditions	Source
Density(ρ)	0.2889	lb/in³	—

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Property	Value	Unit	Conditions
Band Gap(Eg)2 entries	1.000	eV	—
↳	0.9840	eV	—
Seebeck Coefficient(S)	-219.3	µV/K	—

N entriesMultiple entries per property — large groups are collapsed; click a summary row to expand. Use filters above to narrow by form, heat treatment, basis, or test environment.

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Property	Value	Unit	Conditions
Energy Above Hull(ΔEhull)	0.000	eV/atom	—
Formation Energy(ΔHf)2 entries	-0.3282	eV/atom	—
↳	-0.3935	eV/atom	—

N entriesMultiple entries per property — large groups are collapsed; click a summary row to expand. Use filters above to narrow by form, heat treatment, basis, or test environment.

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.

Tl2S

Physical Properties

Electrical Properties

Other Properties

Regulatory Screening

Environmental

Export Control