Superior flexibility merges high power density in single-crystal Bi2Te3 film thermoelectric generators

Short summary

Single-crystal Bi2Te3 films with ultrahigh power factors (50.6 μW cm−1 K−2 for n-type, 48.2 μW cm−1 K−2 for p-type) were achieved by suppressing antisite defects via Se alloying, enabling flexible thermoelectric generators with a record power density of 805.0 W m−2.

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