CsS

CsS is a thermodynamically stable semiconducting compound formed from cesium and sulfur.

CsS
Crystal structure of CsS
Ground-state structure · Materials Project
Overview

About CsS

CsS is a binary compound composed of cesium and sulfur that exhibits semiconducting electronic behavior. As a thermodynamically stable phase located on the convex hull, it represents a robust configuration within the cesium-sulfur chemical space.

This material is of interest to researchers investigating the fundamental properties of alkali metal chalcogenides. Its stability and electronic characteristics make it a subject of study for understanding charge transport and structural diversity in sulfur-based systems.

At a glance

Key Properties

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

Band Gap

1.73 eV
Range across DFT structures

Energy Above Hull

0.000 eV/atom
Best (lowest) across sources

Stability

On hull (stable)
1 DFT source

Structures

246
3 databases, 30 space groups
Validation

Cross-Source DFT Agreement

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

Agreement Score

1.00 / 1.00
Trust tier: medium

Hull Spread

0.000 eV
EAH spread across sources

Sources Compared

1
materials_project

Space Group Consensus

All match
Synthesis

Synthesis Routes

Literature-extracted synthesis procedures targeting CsS.

Solid State
Procedure available · ceder_solid_state
Solid State
Procedure available · ceder_solid_state
Uses

Applications

Where CsS is used.

Fundamental materials researchSolid-state chemistry studies
Reference

Frequently Asked Questions

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

What is CsS?

CsS is a thermodynamically stable semiconducting compound formed from cesium and sulfur.

More questions
What is CsS used for?
CsS is used in fundamental materials research and solid-state chemistry studies.
What is the band gap of CsS?
CsS has a DFT-computed band gap of 1.73 eV across 246 reported structures.
Is CsS a metal, semiconductor, or insulator?
With a band gap up to 1.73 eV it is a semiconductor.
Is CsS thermodynamically stable?
Yes — CsS sits on the convex hull (energy above hull 0 eV/atom), i.e. on hull (stable).
How many polymorphs of CsS are known?
246 structures of CsS are reported across 3 databases, spanning 30 distinct space groups.
How is CsS synthesized?
Literature-reported routes for CsS include solid state (2 procedures documented).
What elements does CsS contain?
CsS contains Cs and S (2 elements).
Where does the data for CsS come from?
CsS data is cross-referenced from latticegraph.
Comparison

How It Compares

As a thermodynamically stable semiconducting compound, CsS serves as a primary reference point for investigating the structural landscape of cesium-sulfur binary systems.

Data sources & attribution
  • latticegraph — Lattice Graph Materials Intelligence Platform

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