Cd2TeSe

Cd2TeSe is a semiconducting cadmium-based ternary chalcogenide that is considered a likely candidate for laboratory synthesis.

CdSeTe
Crystal structure of Cd2TeSe (tetragonal, P-4m2 (No. 115))
Ground-state structure · Materials Project
Overview

About Cd2TeSe

Cd2TeSe is a semiconducting ternary chalcogenide that bridges the properties of cadmium-based binary systems. Its electronic character makes it an interesting candidate for research into light-sensitive materials and thin-film technologies.

Because it sits near the thermodynamic hull, the compound is considered a viable target for experimental synthesis. The existence of multiple reported structural variations suggests a complex phase space that warrants further investigation for potential device integration.

At a glance

Key Properties

Cross-validated computational properties for Cd2TeSe, aggregated across 3 databases.

Band Gap

0.19–0.42 eV
Range across DFT structures

Energy Above Hull

0.012 eV/atom
Best (lowest) across sources

Stability

Near hull (likely stable)
2 DFT sources

Structures

13
3 databases, 3 space groups
Crystallography

Reported Structures

Lowest-energy structures reported for Cd2TeSe, ranked by energy above hull.

Space GroupCrystal SystemBand Gap (eV)E above hull (eV/atom)E/atom (eV)Density (g/cm³)
P-4m2 (No. 115)tetragonal0.420.0123-2.8725.59
R3m (No. 160)trigonal0.190.0210-2.8635.58
P3m1 (No. 156)trigonal0.200.0210-2.8635.59
R3m (No. 160)Trigonal5.42
R3m (No. 160)Trigonal5.63
R3m (No. 160)Trigonal5.58
P3m1 (No. 156)Trigonal5.41
P-4m2 (No. 115)
P-4m2 (No. 115)Tetragonal5.63
P3m1 (No. 156)Trigonal5.62
P3m1 (No. 156)Trigonal5.58
P-4m2 (No. 115)Tetragonal5.42
Uses

Applications

Where Cd2TeSe is used.

Semiconductor researchOptoelectronic device developmentThin-film material studies
Reference

Frequently Asked Questions

Common questions about Cd2TeSe, answered from cross-validated data.

What is Cd2TeSe?

Cd2TeSe is a semiconducting cadmium-based ternary chalcogenide that is considered a likely candidate for laboratory synthesis.

More questions
What is Cd2TeSe used for?
Cd2TeSe is used in semiconductor research, optoelectronic device development, and thin-film material studies.
What is the band gap of Cd2TeSe?
Cd2TeSe has a DFT-computed band gap of 0.19–0.42 eV across 13 reported structures.
Is Cd2TeSe a metal, semiconductor, or insulator?
With a band gap up to 0.42 eV it is a semiconductor.
Is Cd2TeSe thermodynamically stable?
Cd2TeSe has a lowest energy above hull of 0.012 eV/atom (near hull (likely stable)).
What is the crystal structure of Cd2TeSe?
The lowest-energy reported polymorph of Cd2TeSe is tetragonal symmetry, space group P-4m2 (No. 115).
What is the density of Cd2TeSe?
The computed density of the ground-state structure of Cd2TeSe is 5.59 g/cm³.
How many polymorphs of Cd2TeSe are known?
13 structures of Cd2TeSe are reported across 3 databases, spanning 3 distinct space groups.
What elements does Cd2TeSe contain?
Cd2TeSe contains Cd, Se, and Te (3 elements).
Where does the data for Cd2TeSe come from?
Cd2TeSe data is cross-referenced from materials_project, mpaloe, jarvis.
Comparison

How It Compares

As a ternary chalcogenide, Cd2TeSe occupies a unique position in materials research, serving as a structural and electronic bridge between simpler binary cadmium-chalcogenide semiconductors.

Data sources & attribution
  • materials_project — Data from the Materials Project. Cite: Jain et al., APL Materials 1, 011002 (2013).
  • mpaloe — Data from mpaloe.
  • jarvis — Data from JARVIS (NIST). Cite: Choudhary et al., npj Comp. Mater. 6, 173 (2020).

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