InSe
indium selenide · indium monoselenide
Indium selenide is a stable semiconducting material composed of indium and selenium that is widely studied for its potential in electronic and optoelectronic applications.
About indium selenide
Indium selenide is a thermodynamically stable binary compound that has garnered significant attention due to its distinct semiconducting properties. Its layered crystal architecture allows for unique electronic behavior, making it a subject of extensive research across numerous structural databases. The material is highly regarded for its potential in next-generation electronic and optoelectronic devices. Its stability and characteristic electronic response make it a foundational candidate for exploring low-dimensional physics and high-performance material applications.
Key Properties
Cross-validated computational properties for indium selenide, aggregated across 5 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 InSe. 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.
Reported Structures
Lowest-energy structures reported for InSe, 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. |
|---|---|---|---|---|---|
| — | — | 0.55 | 0.0000 | -0.527 | — |
| P63/mmc (No. 194) | hexagonal | 0.46 | 0.0000 | -19.122 | 5.22 |
| R3m (No. 160) | trigonal | 0.17 | 0.0000 | -0.506 | — |
| P-6m2 (No. 187) | hexagonal | 0.16 | 0.0003 | -0.506 | — |
| R3m (No. 160) | trigonal | 0.54 | 0.0004 | -19.121 | 5.27 |
| P63/mmc (No. 194) | hexagonal | 0.23 | 0.0016 | -0.505 | — |
| P-6m2 (No. 187) | hexagonal | 0.66 | 0.0018 | -19.120 | 5.03 |
| — | — | 0.71 | 0.0031 | -0.524 | — |
| C2/m (No. 12) | monoclinic | 0.88 | 0.0114 | -0.495 | — |
| C2/m (No. 12) | monoclinic | 1.05 | 0.0367 | -19.085 | 5.63 |
| — | — | 0.73 | 0.0408 | -0.486 | — |
| — | — | 0.17 | 0.0746 | -0.452 | — |
Applications
Where indium selenide is used.
Frequently Asked Questions
Common questions about indium selenide, answered from cross-validated data.
What is InSe?
Indium selenide is a stable semiconducting material composed of indium and selenium that is widely studied for its potential in electronic and optoelectronic applications.
What is InSe used for?
What is the band gap of InSe?
Is InSe a metal, semiconductor, or insulator?
Is InSe thermodynamically stable?
What is the crystal structure of InSe?
How many polymorphs of InSe are known?
What elements does InSe contain?
Where does the data for InSe come from?
How It Compares
As a prominent member of the indium-chalcogenide family, indium selenide stands out for its robust thermodynamic stability and well-documented structural diversity, serving as a primary benchmark for studying the electronic properties of layered semiconductors.
Data sources & attribution
- oqmd — Data from the OQMD (oqmd.org). Cite: Saal et al., JOM 65, 1501 (2013); Kirklin et al., npj Comp. Mater. 1, 15010 (2015). (CC-BY-4.0)
- materials_project — Data from the Materials Project (materialsproject.org). Cite: Jain et al., APL Materials 1, 011002 (2013). (CC-BY-4.0)
- jarvis — Data from JARVIS (jarvis.nist.gov), NIST. Cite: Choudhary et al., npj Comp. Mater. 6, 173 (2020). (LicenseRef-US-Gov-PD)
- mpaloe — Data from MP-ALOE. Cite: Kuner et al., npj Comput. Mater. (2025), doi:10.1038/s41524-025-01834-9.
Analyze InSe in the Lattice Graph platform
Polymorph comparison, confidence scoring, supply-chain risk, and patent monitoring — across 85 source databases.
Explore the Platform →