K4 Ge2 As4

semiconductor

· K4 Ge2 As4

K₄Ge₂As₄ is a quaternary semiconductor compound combining potassium, germanium, and arsenic in a stoichiometric ratio, belonging to the family of alkali-metal group-IV/V semiconductors. This is a research-phase material rather than a production commodity, studied primarily for its potential in optoelectronic and thermoelectric applications where its bandgap and carrier transport properties may offer advantages in infrared detection or energy conversion. The material's narrow composition window and complex crystal chemistry make it relevant primarily to experimental photonics and solid-state physics research rather than established industrial manufacturing.

infrared optoelectronics (research)thermoelectric energy conversion (experimental)semiconductor band-structure engineeringmaterials research and characterizationnon-linear optical devices (potential)

Compliance & Regulations

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

Units:

si imperial

Property	Value	Unit	Conditions	Source
Band Gap(Eg)	0.8228	eV	—

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

Property	Value	Unit	Conditions	Source
Formation Energy(ΔHf)	-0.4480	eV/atom	—

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

Regulatory Screening

Environmental

Export Control

Quality & Standards

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.

K4 Ge2 As4

Electrical Properties

Other Properties

Regulatory Screening

Environmental

Export Control

Quality & Standards