TlCl — Properties & Data | MatWorld

TlCl

Name: TlCl
Brand: MatWorld

semiconductor

· TlCl

Thallium chloride (TlCl) is an ionic semiconductor compound from the thallium halide family, characterized by its direct bandgap and high density. Historically used in infrared optical systems and specialized radiation detection applications, TlCl has seen limited commercial adoption due to toxicity concerns and the availability of superior alternatives like cadmium telluride and mercuric iodide detectors. The material remains of interest in research contexts for high-energy physics instrumentation and niche optoelectronic applications where its specific optical properties provide advantages, though its use is heavily restricted in many jurisdictions.

infrared optics and windowsradiation detection (research)high-energy physics instrumentationscintillation detectorsspecialized semiconductor research

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?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	2,943.8	ksi	DFT
↳	4,119.1	ksi	DFT · OptB88vdW
Poisson's Ratio(ν)	0.3200	-	DFT · OptB88vdW
Shear Modulus(G)2 entries	920	ksi	DFT
↳	1,696.9	ksi	DFT · OptB88vdW

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)	0.2549	lb/in³	DFT · OptB88vdW

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

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Method

Carrier

Property	Value	Unit	Conditions
Band Gap(Eg)3 entries	3.560	eV	Measured
↳	2.208	eV	DFT · OptB88vdW
↳	3.114	eV	DFT · TBmBJ
Dielectric Constant (Relative Permittivity)(εr)2 entries	40.82	-	DFT · OptB88vdW
↳	29.37 range 5.824–52.91median of 2 measurements	-	DFT · PBEsol
High-Frequency Dielectric Constant (ε∞)(ε∞)2 entries	5.665	-	DFT · OptB88vdW
↳	4.499	-	DFT · TBmBJ
Electron Effective Mass(m*e)	0.2600	me	DFT · OptB88vdW · 27°C
Hole Effective Mass(m*h)	0.5000	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	0.00180	W/(m·K²)	DFT · OptB88vdW · n-type · 1e20 cm⁻³ · 327°C
↳	0.00213	W/(m·K²)	DFT · OptB88vdW · p-type · 1e20 cm⁻³ · 327°C
Seebeck Coefficient(S)2 entries	-134.9	μV/K	DFT · OptB88vdW · n-type · 1e20 cm⁻³ · 327°C
↳	226.4	μV/K	DFT · OptB88vdW · p-type · 1e20 cm⁻³ · 327°C
Spectroscopic Limited Maximum Efficiency (SLME)(SLME)	3.350	%	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	-1.048	eV/atom	DFT · OptB88vdW
↳	-1.058	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

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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.

TlCl

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