K2Hg3Ge2Se8 — Properties & Data | MatWorld

K2Hg3Ge2Se8

ceramic

· JVASP-22883· K2Hg3Ge2Se8

K2Hg3Ge2Se8 is a quaternary chalcogenide ceramic compound containing potassium, mercury, germanium, and selenium. This is a research-phase material studied primarily for its potential in infrared optics and nonlinear optical applications, where chalcogenide ceramics are valued for their transparency in the mid- to far-infrared spectrum and unique electronic properties. Engineers and researchers investigating this compound are typically exploring it as an alternative infrared window material or for photonic devices, taking advantage of the chalcogenide family's high refractive index and wide transmission bandwidth compared to conventional glasses.

infrared optics & windowsnonlinear optical devicesphotonic materials (research)thermal imaging systemsspectroscopy instrumentation

Compliance & Regulations

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

Units:

si imperial

Property	Value	Unit	Conditions	Source
Density(ρ)	5.465	kg/m³	DFT · OptB88vdW

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

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Carrier

Property	Value	Unit	Conditions
Band Gap(Eg)	0.7320	eV	DFT · OptB88vdW
Electron Effective Mass(m*e)	0.3000	me	DFT · OptB88vdW · 27°C
Hole Effective Mass(m*h)	0.7300	me	DFT · OptB88vdW · 27°C
Thermoelectric Power Factor(PF)2 entries	0.000411	W/(m·K²)	DFT · OptB88vdW · n-type · 1e20 cm⁻³ · 327°C
↳	0.000786	W/(m·K²)	DFT · OptB88vdW · p-type · 1e20 cm⁻³ · 327°C
Seebeck Coefficient(S)2 entries	-77.62	μV/K	DFT · OptB88vdW · n-type · 1e20 cm⁻³ · 327°C
↳	183	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.

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Property	Value	Unit	Conditions	Source
Energy Above Hull(ΔEhull)	0.000	eV/atom	DFT · OptB88vdW
Formation Energy(ΔHf)	-0.4430	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.

K2Hg3Ge2Se8

Physical Properties

Electrical Properties

Other Properties

Regulatory Screening

Environmental