Ge4Na12Se12
This compound is a complex quaternary chalcogenide belonging to the class of alkali metal germanium selenides. It is primarily utilized in materials science research for investigating semiconductor properties and structural chemistry within solid-state frameworks.
GeNaSe

Overview
Key Properties
Cross-validated computational properties for Ge4Na12Se12, aggregated across 3 databases.
Band GapEnergy needed to move an electron from the valence band to the conduction band. Lower or zero values tend to behave more metallic; larger gaps are more insulating or semiconducting.
1.89 eV
Range across DFT structures
Energy Above HullThermodynamic distance from the most stable set of competing phases. 0 eV/atom is on the convex hull; small positive values may still be experimentally accessible.
0.000 eV/atom
Best (lowest) across sources
StabilityA plain-language summary of the best reported energy-above-hull result. It reflects whether the lowest-energy structure is on, near, or far from the stability hull.
On hull (stable)
2 DFT sources
StructuresCount of reported calculated crystal structures for this formula, including alternate polymorphs, source databases, and observed space groups.
3
3 databases, 1 space group
Crystallography
Reported Structures
Lowest-energy structures reported for Ge4Na12Se12, ranked by energy above hull.
| Space GroupSymmetry classification of the crystal arrangement. The number is the international space-group index. | Crystal SystemBroad lattice family, such as cubic, tetragonal, monoclinic, or triclinic, derived from unit-cell symmetry. | Band Gap (eV)Electronic gap calculated for this specific reported structure, measured in electronvolts. | E above hull (eV/atom)Thermodynamic distance from the convex hull for this structure, normalized per atom. Lower is generally more stable. | E/atom (eV)Computed total energy normalized per atom. Use energy above hull, not this value alone, when comparing stability. | Density (g/cm³)Mass per relaxed crystal volume, reported in grams per cubic centimeter. |
|---|---|---|---|---|---|
| P21/c (No. 14) | monoclinic | 1.89 | 0.0000 | -3.794 | 3.51 |
| P21/c (No. 14) | — | — | — | — | — |
| — | — | — | — | — | 3.39 |
Uses
Applications
Where Ge4Na12Se12 is used.
Solid-state chemistry researchSemiconductor materials developmentCrystallographic studies
Reference
Frequently Asked Questions
Common questions about Ge4Na12Se12, answered from cross-validated data.
What is Ge4Na12Se12?
This compound is a complex quaternary chalcogenide belonging to the class of alkali metal germanium selenides. It is primarily utilized in materials science research for investigating semiconductor properties and structural chemistry within solid-state frameworks.
What is Ge4Na12Se12 used for?
Ge4Na12Se12 is used in solid-state chemistry research, semiconductor materials development, and crystallographic studies.
What is the band gap of Ge4Na12Se12?
Ge4Na12Se12 has a DFT-computed band gap of 1.89 eV across 3 reported structures.
Is Ge4Na12Se12 a metal, semiconductor, or insulator?
With a band gap up to 1.89 eV it is a semiconductor.
Is Ge4Na12Se12 thermodynamically stable?
Yes — Ge4Na12Se12 sits on the convex hull (energy above hull 0 eV/atom), i.e. on hull (stable).
What is the crystal structure of Ge4Na12Se12?
The lowest-energy reported polymorph of Ge4Na12Se12 is monoclinic symmetry, space group P21/c (No. 14).
What is the density of Ge4Na12Se12?
The computed density of the ground-state structure of Ge4Na12Se12 is 3.51 g/cm³.
How many polymorphs of Ge4Na12Se12 are known?
3 structures of Ge4Na12Se12 are reported across 3 databases, spanning 1 distinct space group.
What elements does Ge4Na12Se12 contain?
Ge4Na12Se12 contains Ge, Na, and Se (3 elements).
Where does the data for Ge4Na12Se12 come from?
Ge4Na12Se12 data is cross-referenced from materials_project, aflow, omat24.
Data sources & attribution
- materials_project — Data from the Materials Project. Cite: Jain et al., APL Materials 1, 011002 (2013).
- aflow — Data from AFLOW. Cite: Curtarolo et al., Comp. Mater. Sci. 58, 218 (2012).
- omat24 — Data from OMat24 (Meta FAIR). Cite: Barroso-Luque et al., arXiv 2410.12771 (2024).
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