K4GeS4

semiconductor

· K4GeS4

K4GeS4 is a quaternary chalcogenide semiconductor compound composed of potassium, germanium, and sulfur. This material belongs to the family of metal sulfides and germanium-based semiconductors, which are primarily of research interest for optoelectronic and photonic device development. While not yet established in high-volume industrial production, K4GeS4 and related germanium chalcogenides are investigated for their tunable bandgap properties and potential in infrared optics, nonlinear optical applications, and solid-state photovoltaic systems where conventional semiconductors reach performance limits.

infrared optics and detectorsnonlinear optical devicesphotovoltaic researchsolid-state electronics (experimental)chalcogenide material systems

Compliance & Regulations

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

Units:

si imperial

Property	Value	Unit	Conditions	Source
Density(ρ)	2.297	kg/m³	—

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

Property	Value	Unit	Conditions
Band Gap(Eg)2 entries	0.8000	eV	—
↳	2.715	eV	—
Magnetic Moment(μB)	0.000	µB	—

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	—
Formation Energy(ΔHf)	-1.213	eV/atom	—

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.

K4GeS4

Physical Properties

Electrical Properties

Other Properties

Regulatory Screening

Environmental

Export Control