Ag2Se
naumannite · silver selenide
Ag2Se is a stable, semiconducting silver selenide mineral that is widely studied for its diverse structural phases and electronic potential.
About naumannite
Ag2Se is a thermodynamically stable semiconductor that occupies a unique position in materials science due to its structural versatility. It is characterized by its ability to adopt numerous distinct crystalline arrangements, reflecting a highly flexible lattice that remains robust under various conditions.
This compound is of significant interest for its electronic properties and potential in advanced technological applications. Its stability on the convex hull ensures that it remains a reliable subject for research into phase transitions and functional material design.
Key Properties
Cross-validated computational properties for naumannite, aggregated across 4 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.
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.
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.
StructuresCount of reported calculated crystal structures for this formula, including alternate polymorphs, source databases, and observed space groups.
Cross-Source DFT Agreement
How well independent DFT databases agree on the thermodynamics of Ag2Se. Tight agreement means computed properties can be trusted without re-running calculations.
Agreement ScoreA normalized confidence score summarizing how closely independent DFT databases agree. Higher scores mean tighter cross-source agreement.
Hull SpreadDifference between the highest and lowest energy-above-hull values reported by comparable sources. Smaller spread means less thermodynamic disagreement.
Sources ComparedNumber and names of computational sources with comparable entries for this formula.
Space Group ConsensusWhether independent sources predict the same crystal symmetry for the lowest-energy structure.
Applications
Where naumannite is used.
Patent Landscape
1 patent reference Ag2Se or close compositional variants.
| Patent | Title | Assignee | Granted |
|---|---|---|---|
| 9634162 | Method of fabricating A(C)IGS based thin film using Se-Ag2Se core-shell nanoparticles, A(C)IGS based thin film | — | — |
Frequently Asked Questions
Common questions about naumannite, answered from cross-validated data.
What is Ag2Se?
Ag2Se is a stable, semiconducting silver selenide mineral that is widely studied for its diverse structural phases and electronic potential.
What is Ag2Se used for?
What is the band gap of Ag2Se?
Is Ag2Se a metal, semiconductor, or insulator?
Is Ag2Se thermodynamically stable?
How many polymorphs of Ag2Se are known?
What elements does Ag2Se contain?
Where does the data for Ag2Se come from?
How It Compares
As a prominent silver-based chalcogenide, Ag2Se serves as a foundational reference point for understanding the behavior of binary metal-selenium systems. Its well-documented structural diversity makes it a primary model for investigating how stoichiometry and atomic arrangement influence the semiconducting nature of similar inorganic compounds.
Data sources & attribution
- latticegraph — Lattice Graph Materials Intelligence Platform
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