Rb3SbS3

Rb3SbS3 is a stable, semiconducting ternary sulfide compound composed of rubidium, antimony, and sulfur.

RbSSb
Crystal structure of Rb3SbS3 (cubic, P213 (No. 198))
Ground-state structure · Materials Project
Overview

About Rb3SbS3

Rb3SbS3 is a ternary chalcogenide that exhibits semiconducting electronic properties. As a thermodynamically stable phase located on the convex hull, it represents a robust structural arrangement of rubidium, antimony, and sulfur atoms.

This compound is of significant interest in materials science due to its well-defined composition and stability. Its electronic character makes it a candidate for investigation in various solid-state applications where semiconducting behavior is required.

At a glance

Key Properties

Cross-validated computational properties for Rb3SbS3, aggregated across 3 databases.

Band Gap

2.65–2.90 eV
Range across DFT structures · ground state: wide gap

Energy Above Hull

0.000 eV/atom
Best (lowest) across sources

Stability

Stable
3 DFT sources

Structures

6
3 databases, 1 space group
Validation

Cross-Source DFT Agreement

How well independent DFT databases agree on the thermodynamics of Rb3SbS3. Tight agreement means computed properties can be trusted without re-running calculations.

Agreement Score

1.00 / 1.00
Trust tier: high

Hull Spread

0.000 eV
EAH spread across sources

Sources Compared

3
jarvis, materials_project, oqmd

Space Group Consensus

All match
Crystallography

Reported Structures

Lowest-energy structures reported for Rb3SbS3, ranked by energy above hull.

Space GroupCrystal SystemBand Gap (eV)E above hull (eV/atom)E/atom (eV)Density (g/cm³)
——2.860.0000-1.101—
P213 (No. 198)cubic2.650.0000-1.117—
P213 (No. 198)cubic2.420.0000-3.9643.25
——2.900.0617-1.039—
P213 (No. 198)cubic———3.20
P213 (No. 198)cubic———3.22
P213 (No. 198)cubic———3.14
Reference

Frequently Asked Questions

Common questions about Rb3SbS3, answered from cross-validated data.

What is Rb3SbS3?

Rb3SbS3 is a stable, semiconducting ternary sulfide compound composed of rubidium, antimony, and sulfur.

More questions
What is the band gap of Rb3SbS3?
Rb3SbS3 has a DFT-computed band gap of 2.65–2.90 eV across 6 reported structures. Standard DFT underestimates band gaps, so the measured gap is typically larger.
Is Rb3SbS3 a metal, semiconductor, or insulator?
DFT predicts a band gap of up to 2.90 eV (a semiconductor). Measured gaps are typically larger.
Is Rb3SbS3 thermodynamically stable?
Yes — Rb3SbS3 sits on the convex hull (energy above hull 0 eV/atom), i.e. stable.
What is the crystal structure of Rb3SbS3?
The reference structure of Rb3SbS3 is cubic symmetry, space group P213 (No. 198).
How many polymorphs of Rb3SbS3 are known?
6 structures of Rb3SbS3 are reported across 3 databases, spanning 1 distinct space group.
What elements does Rb3SbS3 contain?
Rb3SbS3 contains Rb, S, and Sb (3 elements).
Where does the data for Rb3SbS3 come from?
Rb3SbS3 data is cross-referenced from oqmd, jarvis, materials_project, mpaloe.
Comparison

How It Compares

As a stable ternary chalcogenide, Rb3SbS3 occupies a distinct position in the landscape of complex sulfides, serving as a reliable reference point for structural and electronic studies within this chemical family.

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)
  • jarvis — Data from JARVIS (jarvis.nist.gov), NIST. Cite: Choudhary et al., npj Comp. Mater. 6, 173 (2020). (LicenseRef-US-Gov-PD)
  • materials_project — Data from the Materials Project (materialsproject.org). Cite: Jain et al., APL Materials 1, 011002 (2013). (CC-BY-4.0)
  • mpaloe — Data from MP-ALOE. Cite: Kuner et al., npj Comput. Mater. (2025), doi:10.1038/s41524-025-01834-9.

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