Li₄Cu₄S₄ is an experimental quaternary semiconductor compound combining lithium, copper, and sulfur elements, representing an emerging class of mixed-metal chalcogenides being investigated for energy storage and photovoltaic applications. This material belongs to the family of sulfide-based semiconductors that has garnered research interest for solid-state battery electrolytes, photoelectrochemical devices, and thermoelectric systems due to the favorable electrochemical properties of lithium-copper-sulfur combinations. As a research-phase compound rather than a commercial material, it is primarily of interest to materials scientists and battery technologists exploring alternatives to conventional oxide-based semiconductors and solid electrolytes with potentially improved ionic conductivity and electronic tunability.
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| Property | Value | Unit | Conditions | Source | |
|---|---|---|---|---|---|
Bulk Modulus(K) | 63.12 | GPa | — | ||
Shear Modulus(G) | 31.91 | GPa | — |
| Property | Value | Unit | Conditions | Source | |
|---|---|---|---|---|---|
Band Gap(Eg) | 1.659 | eV | — |
| Property | Value | Unit | Conditions | Source | |
|---|---|---|---|---|---|
Formation Energy(ΔHf) | -0.8370 | eV/atom | — |