What question did this study set out to answer?

The aim is to investigate the thermoelectric properties of TlBi and TlSb topological insulators using advanced computational methods.

Thermoelectric properties of two-dimensional topological insulators TlBi and TlSb

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Investigation finds unique thermoelectric behaviors in two-dimensional topological insulators, indicating potential applications.

The aim is to investigate the thermoelectric properties of TlBi and TlSb topological insulators using advanced computational methods.
Conducted first-principles calculations to determine band structure and thermoelectric performance.
Employed nonequilibrium Green’s function methods to analyze edge and bulk state influences.
Examined monolayer and nanoribbon forms of TlBi and TlSb to compare their thermoelectric figures of merit.
TlBi exhibits a high thermoelectric figure of merit ZT≈2.6, while TlSb shows moderate ZT≈0.6.
ZT peaks along the armchair and zigzag directions for TlSb are nearly identical, differing from TlBi.
Edge states in nanoribbons significantly suppress Seebeck coefficients and overall ZT compared to monolayers.

Gong et al. (2026) studied this question.

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