K2Y4Cu4Se9

metal

· JVASP-133709· K2Y4Cu4Se9

K2Y4Cu4Se9 is a ternary metal selenide compound containing potassium, yttrium, copper, and selenium. This is a research-phase material rather than an established engineering alloy; compounds in this family are typically investigated for their potential electronic, thermoelectric, or photovoltaic properties due to the layered structures and mixed-valence chemistry characteristic of selenide systems. Engineers and material scientists would consider this material primarily in exploratory applications where novel electronic behavior or energy conversion efficiency could provide advantages over conventional semiconductors or thermoelectric materials.

thermoelectric power generation (research)semiconductor devices (experimental)photovoltaic cells (research phase)solid-state electronicsenergy conversion materialsmaterials discovery & development

Compliance & Regulations

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

Units:

si imperial

Property	Value	Unit	Conditions	Source
Density(ρ)	0.1844	lb/in³	—

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

Property	Value	Unit	Conditions	Source
Band Gap(Eg)	0.7980	eV	—
Magnetic Moment(μB)	0.000	µB	—

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

Property	Value	Unit	Conditions	Source
Energy Above Hull(ΔEhull)	0.01570	eV/atom	—
Formation Energy(ΔHf)	-1.371	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.

K2Y4Cu4Se9

Physical Properties

Electrical Properties

Other Properties

Regulatory Screening

Environmental

Export Control