Tl2O — Properties & Data | MatWorld

Tl2O

Name: Tl2O
Brand: MatWorld

ceramic

· Tl2O

Thallium(I) oxide (Tl₂O) is an ionic ceramic compound composed of thallium and oxygen, belonging to the family of rare-earth and specialty metal oxides. While primarily of research and academic interest rather than high-volume industrial application, Tl₂O is investigated in specialized contexts including infrared optics, semiconductor research, and radiation detection materials due to thallium's high atomic number and unique electronic properties. Engineers considering this material should note that thallium toxicity and limited commercial availability make it suitable only for niche applications where its specific optical or electronic characteristics justify the handling and cost constraints.

infrared optics and windowsradiation detection materialssemiconductor researchspecialty glass compositionshigh-index optical coatings

Compliance & Regulations

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

Units:

si imperial

Property	Value	Unit	Conditions
Bulk Modulus(K)	26.52	GPa	DFT · OptB88vdW
Exfoliation Energy(Eexf)	78.16	meV/atom	DFT · OptB88vdW
Poisson's Ratio(ν)	0.3000	-	DFT · OptB88vdW
Shear Modulus(G)	12.21	GPa	DFT · OptB88vdW

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

Property	Value	Unit	Conditions	Source
Density(ρ)	9.899	kg/m³	DFT · OptB88vdW

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

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Carrier

Property	Value	Unit	Conditions
Band Gap(Eg)	0.6210	eV	DFT · OptB88vdW
Dielectric Constant (Relative Permittivity)(εr)	32.10	-	DFT · OptB88vdW
High-Frequency Dielectric Constant (ε∞)(ε∞)	12.93	-	DFT · OptB88vdW
Electron Effective Mass(m*e)	0.2633	me	DFT · OptB88vdW · 27°C
Hole Effective Mass(m*h)	1.470	me	DFT · OptB88vdW · 27°C
Magnetic Moment(μB)	0.000	µB	DFT · OptB88vdW
Piezoelectric Modulus(eij)	0.000	C/m²	DFT · OptB88vdW
Thermoelectric Power Factor(PF)2 entries	0.00325	W/(m·K²)	DFT · OptB88vdW · n-type · 1e20 cm⁻³ · 327°C
↳	0.00363	W/(m·K²)	DFT · OptB88vdW · p-type · 1e20 cm⁻³ · 327°C
Seebeck Coefficient(S)2 entries	-187.9	μV/K	DFT · OptB88vdW · n-type · 1e20 cm⁻³ · 327°C
↳	305.1	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.

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

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Method

Property	Value	Unit	Conditions
Energy Above Hull(ΔEhull)	0.000	eV/atom	DFT · OptB88vdW
Formation Energy(ΔHf)2 entries	-0.6775	eV/atom	DFT · OptB88vdW
↳	-0.5783	eV/atom	Measured

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

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.

Tl2O

Mechanical Properties

Physical Properties

Electrical Properties

Other Properties

Regulatory Screening

Environmental