CoSi2

Cobalt disilicide · Cobalt silicide

Cobalt disilicide is a stable, metallic compound widely used in the semiconductor industry to create high-performance electrical contacts.

Crystal structure of CoSi2
Ground-state structure · Materials Project
Overview

About Cobalt disilicide

Cobalt disilicide is a metallic silicide that occupies a stable position on the thermodynamic convex hull. Its robust structural integrity and electronic properties make it a foundational material in the study of transition metal silicides for advanced electronics.

Because of its high conductivity and compatibility with silicon substrates, this compound is primarily utilized in microelectronics. It serves as a critical component in forming low-resistance ohmic contacts and interconnects within integrated circuits.

At a glance

Key Properties

Cross-validated computational properties for Cobalt disilicide, aggregated across 5 databases.

Band Gap

Metallic / not reported

Energy Above Hull

0.000 eV/atom
Best (lowest) across sources

Stability

On hull (stable)
4 DFT sources

Structures

64
5 databases, 14 space groups
Uses

Applications

Where Cobalt disilicide is used.

Ohmic contactsSchottky barrier diodesInterconnects in integrated circuitsSelf-aligned silicide (salicide) processes
Reference

Frequently Asked Questions

Common questions about Cobalt disilicide, answered from cross-validated data.

What is CoSi2?

Cobalt disilicide is a stable, metallic compound widely used in the semiconductor industry to create high-performance electrical contacts.

More questions
What is CoSi2 used for?
Cobalt disilicide (CoSi2) is used in ohmic contacts, schottky barrier diodes, interconnects in integrated circuits, and self-aligned silicide (salicide) processes.
What is the band gap of CoSi2?
Cobalt disilicide (CoSi2) is computed to be metallic (no band gap) in the reported DFT structures.
Is CoSi2 a metal, semiconductor, or insulator?
Computed band structures report no gap, so it is metallic.
Is CoSi2 thermodynamically stable?
Yes — Cobalt disilicide (CoSi2) sits on the convex hull (energy above hull 0 eV/atom), i.e. on hull (stable).
How many polymorphs of CoSi2 are known?
64 structures of CoSi2 are reported across 5 databases, spanning 14 distinct space groups.
What elements does CoSi2 contain?
Cobalt disilicide (CoSi2) contains Co and Si (2 elements).
Where does the data for CoSi2 come from?
CoSi2 data is cross-referenced from latticegraph.
Comparison

How It Compares

Within the silicon anode materials class.

Within the class of silicon-based materials, CoSi2 is distinguished by its metallic character, contrasting with the semiconducting nature of pure silicon or compounds like BaSi2. While materials like MoSi2 are often favored for high-temperature structural applications, CoSi2 is specifically optimized for its ability to form sharp, stable interfaces with silicon, making it a superior choice for miniaturized electronic components compared to the more brittle or less conductive silicides in the group.

Explore

Related Compounds

Other Silicon Anode Materials in the database.

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

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