GeCl4 — Properties & Data | MatWorld

GeCl4

ceramic

· JVASP-32321· GeCl4

Germanium tetrachloride (GeCl4) is a volatile inorganic chloride compound that functions primarily as a precursor material rather than a final-form engineering ceramic. It is used extensively in optical fiber manufacturing and semiconductor processing, where it serves as a source material for depositing high-purity germanium oxide layers via chemical vapor deposition (CVD). The compound is valued for its ability to produce extremely pure and homogeneous coatings, making it essential in telecommunications infrastructure and integrated circuit fabrication where optical clarity and dopant precision are critical.

optical fiber preform productionsemiconductor CVD processingtelecommunications waveguidesinfrared optics manufacturingthin-film germanium depositionhigh-purity material precursor

Compliance & Regulations

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

Units:

si imperial

Property	Value	Unit	Conditions	Source
Density(ρ)	2.512	kg/m³	DFT · OptB88vdW

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

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Method

Carrier

Property	Value	Unit	Conditions
Band Gap(Eg)2 entries	3.744	eV	DFT · OptB88vdW
↳	5.858	eV	DFT · TBmBJ
High-Frequency Dielectric Constant (ε∞)(ε∞)2 entries	3.413	-	DFT · OptB88vdW
↳	2.700	-	DFT · TBmBJ
Magnetic Moment(μB)	0.000	µB	DFT · OptB88vdW
Thermoelectric Power Factor(PF)2 entries	0.000278	W/(m·K²)	DFT · OptB88vdW · n-type · 1e20 cm⁻³ · 327°C
↳	0.000110	W/(m·K²)	DFT · OptB88vdW · p-type · 1e20 cm⁻³ · 327°C
Seebeck Coefficient(S)2 entries	-244.6	μV/K	DFT · OptB88vdW · n-type · 1e20 cm⁻³ · 327°C
↳	430.7	μV/K	DFT · OptB88vdW · p-type · 1e20 cm⁻³ · 327°C
Spectroscopic Limited Maximum Efficiency (SLME)(SLME)	0.000	%	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.

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

Property	Value	Unit	Conditions	Source
Energy Above Hull(ΔEhull)	0.000	eV/atom	DFT · OptB88vdW
Formation Energy(ΔHf)	-0.8812	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.

GeCl4

Physical Properties

Electrical Properties

Other Properties

Regulatory Screening

Environmental