CdInS2
CdInS2 is a thermodynamically stable semiconducting compound composed of cadmium, indium, and sulfur.

About CdInS2
CdInS2 is a semiconducting ternary sulfide that maintains a thermodynamically stable position on the convex hull. Its structural versatility is highlighted by multiple reported configurations across various databases, reflecting a complex interplay between its constituent elements.
As a stable semiconductor, this material is of significant interest for researchers investigating optoelectronic and photovoltaic applications. Its ability to form distinct structural phases makes it a compelling subject for studies focused on tuning electronic properties through synthesis control.
Key Properties
Cross-validated computational properties for CdInS2, 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.
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.
Reported Structures
Lowest-energy structures reported for CdInS2, 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. |
|---|---|---|---|---|---|
| Fd-3m (No. 227) | cubic | 1.05 | 0.0000 | -14.702 | 5.19 |
| P-3m1 (No. 164) | trigonal | 0.00 | 0.1905 | -15.227 | 5.48 |
| P-3m1 (No. 164) | — | — | — | — | — |
| P-3m1 (No. 164) | — | — | — | — | — |
| — | — | — | — | — | 4.98 |
Applications
Where CdInS2 is used.
Frequently Asked Questions
Common questions about CdInS2, answered from cross-validated data.
What is CdInS2?
CdInS2 is a thermodynamically stable semiconducting compound composed of cadmium, indium, and sulfur.
What is CdInS2 used for?
What is the band gap of CdInS2?
Is CdInS2 a metal, semiconductor, or insulator?
Is CdInS2 thermodynamically stable?
What is the crystal structure of CdInS2?
What is the density of CdInS2?
How many polymorphs of CdInS2 are known?
What elements does CdInS2 contain?
Where does the data for CdInS2 come from?
How It Compares
As a stable ternary sulfide, CdInS2 represents a key point in the chemical space of cadmium-indium-sulfur systems. While it exists as a standalone entry in this context, it serves as a foundational example of how combining these specific elements leads to robust, stable semiconducting architectures that are essential for developing next-generation electronic components.
Data sources & attribution
- materials_project — Data from the Materials Project. Cite: Jain et al., APL Materials 1, 011002 (2013).
- jarvis — Data from JARVIS (NIST). Cite: Choudhary et al., npj Comp. Mater. 6, 173 (2020).
- omat24 — Data from OMat24 (Meta FAIR). Cite: Barroso-Luque et al., arXiv 2410.12771 (2024).
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