TlBr — Properties & Data | MatWorld

TlBr

Name: TlBr
Brand: MatWorld

semiconductor

· TlBr

Thallium bromide (TlBr) is a binary semiconductor compound from the halide family, characterized by a direct bandgap and high atomic number constituents that enable strong photon absorption. It is primarily used in gamma-ray and X-ray detection systems where its high stopping power and good charge collection efficiency make it valuable for radiation imaging and spectroscopy applications in nuclear medicine, security screening, and environmental monitoring. TlBr offers advantages over alternatives like CdZnTe in terms of higher detection efficiency for hard X-rays and gamma rays, though it is less commonly deployed than some competitors due to material availability and cost constraints; research interest remains active in optimizing crystal growth and detector performance.

gamma-ray detectorsX-ray spectroscopynuclear medicine imagingradiation monitoringsecurity scanning systemsresearch-stage semiconductor devices

Compliance & Regulations

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

Units:

si imperial

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Method

Property	Value	Unit	Conditions
Bulk Modulus(K)2 entries	3,688.3	ksi	DFT · OptB88vdW
↳	3,360.4 range 2,649.1–4,071.8median of 2 measurements	ksi	DFT
Poisson's Ratio(ν)	0.3100	-	DFT · OptB88vdW
Shear Modulus(G)2 entries	1,578	ksi	DFT · OptB88vdW
↳	1,165.6 range 1,029.1–1,302.1median of 2 measurements	ksi	DFT

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

Property	Value	Unit	Conditions	Source
Density(ρ)	0.2694	lb/in³	DFT · OptB88vdW

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

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Method

Property	Value	Unit	Conditions
Band Gap(Eg)3 entries	2.640	eV	Measured
↳	2.023	eV	DFT · OptB88vdW
↳	2.833	eV	DFT · TBmBJ
Dielectric Constant (Relative Permittivity)(εr)2 entries	37.70	-	DFT · OptB88vdW
↳	27.07 range 6.593–47.54median of 2 measurements	-	DFT · PBEsol
High-Frequency Dielectric Constant (ε∞)(ε∞)2 entries	6.369	-	DFT · OptB88vdW
↳	4.842	-	DFT · TBmBJ
Electron Effective Mass(m*e)	0.2300	me	DFT · OptB88vdW · 27°C
Hole Effective Mass(m*h)	0.3300	me	DFT · OptB88vdW · 27°C
Magnetic Moment(μB)	0.000	µB	DFT · OptB88vdW
Piezoelectric Modulus(eij)	0.000	C/m²	DFT · OptB88vdW
Spectroscopic Limited Maximum Efficiency (SLME)(SLME)	6.670	%	DFT · TBmBJ

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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Method

Property	Value	Unit	Conditions
Energy Above Hull(ΔEhull)	0.000	eV/atom	DFT · OptB88vdW
Formation Energy(ΔHf)2 entries	-0.8902	eV/atom	DFT · OptB88vdW
↳	-0.8950	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

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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.

TlBr

Mechanical Properties

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