TlBr

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:
siimperial
PropertyValueUnitConditionsSource
Bulk Modulus(K)2 entries
25.43
GPa—
↳
23.17
range 18.26–28.07median of 2 measurements
GPa—
Poisson's Ratio(ν)
0.3100
-—
Shear Modulus(G)2 entries
10.88
GPa—
↳
8.037
range 7.095–8.978median of 2 measurements
GPa—
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.
Verified Unverified Low confidence (<80%) Link to source
PropertyValueUnitConditionsSource
Density(ρ)
7.457
kg/m³—
Verified Unverified Low confidence (<80%) Link to source
PropertyValueUnitConditionsSource
Band Gap(Eg)2 entries
2.640
eV—
↳
2.023
eV—
Dielectric Constant (Relative Permittivity)(εr)2 entries
37.70
-—
↳
27.07
range 6.593–47.54median of 2 measurements
-—
Magnetic Moment(μB)
0.000
µB—
Piezoelectric Modulus(eij)
0.000
C/m²—
Seebeck Coefficient(S)
-126.6
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.
Verified Unverified Low confidence (<80%) Link to source
PropertyValueUnitConditionsSource
Energy Above Hull(ΔEhull)
0.000
eV/atom—
Formation Energy(ΔHf)2 entries
-0.8950
eV/atom—
↳
-0.8902
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.
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.