Tl5Se2I — Properties & Data | MatWorld

Tl5Se2I

ceramic

· JVASP-12534· Tl5Se2I

Tl₅Se₂I is a mixed-halide selenide ceramic compound combining thallium, selenium, and iodine elements. This is a research-phase material primarily of interest for optoelectronic and photonic applications rather than structural engineering; it belongs to the family of heavy-element chalcohalides being investigated for infrared detection, scintillation, and solid-state radiation sensing due to the high atomic number constituents that interact strongly with photons and charged particles.

infrared detectorsradiation detectionscintillator researchoptoelectronic devicesexperimental semiconductors

Compliance & Regulations

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

Units:

si imperial

Property	Value	Unit	Conditions	Source
Density(ρ)	8.224	kg/m³	DFT · OptB88vdW

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

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Carrier

Property	Value	Unit	Conditions
Band Gap(Eg)	0.7730	eV	DFT · OptB88vdW
High-Frequency Dielectric Constant (ε∞)(ε∞)	12.53	-	DFT · OptB88vdW
Electron Effective Mass(m*e)	0.3000	me	DFT · OptB88vdW · 27°C
Hole Effective Mass(m*h)	0.4700	me	DFT · OptB88vdW · 27°C
Magnetic Moment(μB)	0.000	µB	DFT · OptB88vdW
Thermoelectric Power Factor(PF)2 entries	0.00296	W/(m·K²)	DFT · OptB88vdW · n-type · 1e20 cm⁻³ · 327°C
↳	0.00243	W/(m·K²)	DFT · OptB88vdW · p-type · 1e20 cm⁻³ · 327°C
Seebeck Coefficient(S)2 entries	-208.5	μV/K	DFT · OptB88vdW · n-type · 1e20 cm⁻³ · 327°C
↳	216.5	μV/K	DFT · OptB88vdW · p-type · 1e20 cm⁻³ · 327°C

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	Source
Energy Above Hull(ΔEhull)	0.000	eV/atom	DFT · OptB88vdW
Formation Energy(ΔHf)	-0.4719	eV/atom	DFT · OptB88vdW

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

Reference data from cited sources. Not verified or certified by MatWorld Inc. Verify against the source before use in design. Terms: engineering data

Regulatory Screening

Environmental

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.

Tl5Se2I

Physical Properties

Electrical Properties

Other Properties

Regulatory Screening

Environmental