TlSe

semiconductor

· TlSe

TlSe is a narrow-bandgap semiconductor compound formed from thallium and selenium, belonging to the III-VI family of binary semiconductors. Historically studied for infrared detection and optoelectronic applications due to its narrow bandgap energy, TlSe remains primarily a research material rather than a mainstream engineering compound; it has seen limited industrial adoption compared to more stable alternatives like HgCdTe or modern quantum dots, partly due to thallium's toxicity and the material's thermodynamic instability at elevated temperatures. Engineers may encounter TlSe in specialized contexts involving infrared sensing, thermal imaging research, or photovoltaic investigations where its unique electronic structure offers theoretical advantages, though material availability, processing challenges, and health/environmental concerns typically favor other semiconductor options for production applications.

infrared detectors (research)thermal imaging sensors (experimental)photovoltaic devices (laboratory)optoelectronic researchbandgap engineering studiesnarrow-gap semiconductor exploration

Compliance & Regulations

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

Units:

si imperial

Property	Value	Unit	Conditions
Bulk Modulus(K)	3,924.7	ksi	—
Poisson's Ratio(ν)	0.2900	-	—
Shear Modulus(G)	1,904.3	ksi	—

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

Property	Value	Unit	Conditions	Source
Density(ρ)	0.2912	lb/in³	—

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Property	Value	Unit	Conditions
Band Gap(Eg)2 entries	0.5600	eV	—
↳	0.2570	eV	—
Magnetic Moment(μB)	0.000	µB	—
Seebeck Coefficient(S)	-136.2	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)	0.02450	eV/atom	—
Formation Energy(ΔHf)2 entries	-0.3166	eV/atom	—
↳	-0.2799	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.

TlSe

Mechanical Properties

Physical Properties

Electrical Properties

Other Properties

Regulatory Screening

Environmental

Export Control