Ge

Germanium · Ge

Germanium is a stable, semiconducting chemical element widely utilized in the production of high-tech electronic and optical components.

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

About Germanium

Germanium is a fundamental semiconducting element that serves as a cornerstone of modern materials science. Its status as a thermodynamically stable phase ensures its reliability for complex fabrication processes, making it a highly researched material with an extensive library of structural data available to scientists.

Due to its unique electronic properties, this element is essential for advanced technologies requiring precise signal manipulation. It remains a primary choice for engineers developing high-speed electronics and infrared optics, where its consistent performance under various conditions is highly valued.

At a glance

Key Properties

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

Band Gap

0.34–1.14 eV
Range across DFT structures

Energy Above Hull

0.000 eV/atom
Best (lowest) across sources

Stability

On hull (stable)
3 DFT sources

Structures

69
5 databases, 16 space groups
Validation

Cross-Source DFT Agreement

How well independent DFT databases agree on the thermodynamics of Ge. 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, nomad

Space Group Consensus

All match
Synthesis

Synthesis Routes

Literature-extracted synthesis procedures targeting Ge.

Solid State
Procedure available · ceder_solid_state
Sol Gel
Procedure available · ceder_sol_gel
Sol Gel
Procedure available · ceder_sol_gel
Sol Gel
Procedure available · ceder_sol_gel
Sol Gel
Procedure available · ceder_sol_gel
Sol Gel
Procedure available · ceder_sol_gel
Uses

Applications

Where Germanium is used.

Infrared opticsFiber-optic systemsSemiconductor devicesSolar cellsPolymerization catalysts
Reference

Frequently Asked Questions

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

What is Ge?

Germanium is a stable, semiconducting chemical element widely utilized in the production of high-tech electronic and optical components.

More questions
What is Ge used for?
Germanium (Ge) is used in infrared optics, fiber-optic systems, semiconductor devices, solar cells, and polymerization catalysts.
What is the band gap of Ge?
Germanium (Ge) has a DFT-computed band gap of 0.34–1.14 eV across 69 reported structures.
Is Ge a metal, semiconductor, or insulator?
With a band gap up to 1.14 eV it is a semiconductor.
Is Ge thermodynamically stable?
Yes — Germanium (Ge) sits on the convex hull (energy above hull 0 eV/atom), i.e. on hull (stable).
How many polymorphs of Ge are known?
69 structures of Ge are reported across 5 databases, spanning 16 distinct space groups.
How is Ge synthesized?
Literature-reported routes for Ge include solid state, sol gel (10 procedures documented).
What elements does Ge contain?
Germanium (Ge) contains Ge (1 element).
Where does the data for Ge come from?
Ge data is cross-referenced from latticegraph.
Comparison

How It Compares

As a foundational elemental semiconductor, germanium occupies a unique position in the periodic table, bridging the gap between lighter and heavier group-four elements. It is widely recognized for its distinct electronic behavior and structural robustness, serving as a benchmark material for the development of modern semiconductor physics.

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

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