TlSe

thallium(I,III) selenide · thallium monoselenide

TlSe is a stable, semiconducting binary compound formed from thallium and selenium.

SeTl
Crystal structure of TlSe
Ground-state structure · Materials Project
Overview

About thallium(I,III) selenide

TlSe is a distinct semiconducting compound composed of thallium and selenium. It is recognized for its thermodynamic stability, sitting securely on the convex hull, which underscores its robust structural integrity under standard conditions. The material has been extensively characterized across multiple databases, reflecting its significance in fundamental materials research. Its electronic behavior makes it a subject of interest for those studying the intersection of heavy metal chalcogenides and semiconductor physics.

At a glance

Key Properties

Cross-validated computational properties for thallium(I,III) selenide, aggregated across 3 databases.

Band Gap

0.20 eV
Range across DFT structures

Energy Above Hull

0.000 eV/atom
Best (lowest) across sources

Stability

On hull (stable)
2 DFT sources

Structures

56
3 databases, 13 space groups
Synthesis

Synthesis Routes

Literature-extracted synthesis procedures targeting TlSe.

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

Applications

Where thallium(I,III) selenide is used.

semiconductor researchoptoelectronicsinfrared detector development
Reference

Frequently Asked Questions

Common questions about thallium(I,III) selenide, answered from cross-validated data.

What is TlSe?

TlSe is a stable, semiconducting binary compound formed from thallium and selenium.

More questions
What is TlSe used for?
thallium(I,III) selenide (TlSe) is used in semiconductor research, optoelectronics, and infrared detector development.
What is the band gap of TlSe?
thallium(I,III) selenide (TlSe) has a DFT-computed band gap of 0.20 eV across 56 reported structures.
Is TlSe a metal, semiconductor, or insulator?
With a band gap up to 0.20 eV it is a semiconductor.
Is TlSe thermodynamically stable?
Yes — thallium(I,III) selenide (TlSe) sits on the convex hull (energy above hull 0 eV/atom), i.e. on hull (stable).
How many polymorphs of TlSe are known?
56 structures of TlSe are reported across 3 databases, spanning 13 distinct space groups.
How is TlSe synthesized?
Literature-reported routes for TlSe include solid state (4 procedures documented).
What elements does TlSe contain?
thallium(I,III) selenide (TlSe) contains Se and Tl (2 elements).
Where does the data for TlSe come from?
TlSe data is cross-referenced from latticegraph.
Comparison

How It Compares

As a standalone representative of its specific thallium-selenium stoichiometry, TlSe serves as a critical benchmark for understanding the phase stability and electronic trends within binary thallium chalcogenide systems.

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

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