K2Hg3Ge2S8 — Properties & Data | MatWorld

K2Hg3Ge2S8

Name: K2Hg3Ge2S8
Brand: MatWorld

semiconductor

· K2Hg3Ge2S8

K2Hg3Ge2S8 is a quaternary semiconductor compound combining mercury, germanium, sulfur, and potassium—a research-phase material belonging to the family of metal chalcogenides. This compound is primarily investigated for its potential in nonlinear optical applications and photonic devices, where its sulfide-based structure offers tunable electronic and optical properties distinct from simpler binary or ternary semiconductors. While not yet established in mainstream industrial production, materials in this class are of interest to researchers developing next-generation infrared optics, frequency conversion devices, and specialized detectors where traditional semiconductors reach their performance limits.

Nonlinear optical devicesInfrared optics researchPhotonic materials developmentFrequency conversion applicationsSpecialized semiconductor researchOptical detection systems

Compliance & Regulations

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

Units:

si imperial

Property	Value	Unit	Conditions	Source
Density(ρ)	0.1641	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	2.640	eV	Measured
↳	1.265	eV	DFT · OptB88vdW
↳	2.344	eV	DFT · TBmBJ
High-Frequency Dielectric Constant (ε∞)(ε∞)2 entries	6.487	-	DFT · OptB88vdW
↳	4.853	-	DFT · TBmBJ
Electron Effective Mass(m*e)	0.3900	me	DFT · OptB88vdW · 27°C
Hole Effective Mass(m*h)	0.8133	me	DFT · OptB88vdW · 27°C
Magnetic Moment(μB)	0.000	µB	DFT · OptB88vdW
Thermoelectric Power Factor(PF)2 entries	0.000551	W/(m·K²)	DFT · OptB88vdW · n-type · 1e20 cm⁻³ · 327°C
↳	0.000835	W/(m·K²)	DFT · OptB88vdW · p-type · 1e20 cm⁻³ · 327°C
Seebeck Coefficient(S)2 entries	-99.90	μV/K	DFT · OptB88vdW · n-type · 1e20 cm⁻³ · 327°C
↳	189.6	μV/K	DFT · OptB88vdW · p-type · 1e20 cm⁻³ · 327°C
Spectroscopic Limited Maximum Efficiency (SLME)(SLME)	15.63	%	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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Property	Value	Unit	Conditions	Source
Energy Above Hull(ΔEhull)	0.00150	eV/atom	DFT · OptB88vdW
Formation Energy(ΔHf)	-0.5310	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

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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.

K2Hg3Ge2S8

Physical Properties

Electrical Properties

Other Properties

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