K4 Rb4 S4
semiconductor· K4 Rb4 S4
K₄Rb₄S₄ is an experimental alkali metal sulfide compound combining potassium and rubidium cations with a sulfide anion framework. This material belongs to the family of mixed-cation ionic semiconductors and represents a research-phase compound without established commercial production or widespread industrial adoption. Interest in such materials stems from their potential in solid-state ionics, photovoltaic applications, and as precursors for studying structure-property relationships in multimetallic sulfide systems, though practical engineering applications remain limited to laboratory investigations.
experimental semiconductorssolid-state ionic researchphotovoltaic materials developmentalkali metal chemistry studiesmaterials characterization
Compliance & Regulations
?EAR?Conflict Free?RoHS?REACH?TSCA?Prop 65
| Property | Value | Unit | Conditions | Source | |
|---|---|---|---|---|---|
Bulk Modulus(K) | — | Pa | — | — | |
Shear Modulus(G) | — | Pa | — | — |
Verified Unverified Low confidence (<80%) Link to source
| Property | Value | Unit | Conditions | Source | |
|---|---|---|---|---|---|
Band Gap(Eg) | — | eV | — | — |
Verified Unverified Low confidence (<80%) Link to source
| Property | Value | Unit | Conditions | Source | |
|---|---|---|---|---|---|
Formation Energy(ΔHf) | — | 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.