Thermoelectric generator

Physics

Nanotechnology

Engineering physics

Power factor

Seebeck coefficient

Figure of merit

Engineering

Composite material

Power (physics)

Thin film

Materials science

Thermoelectric materials

Thermal conductivity

Optoelectronics

Thermoelectric effect

Thermodynamics

Advanced Materials

Aiming to overcome both the structural and commercial limitations of flexible thermoelectric power generators, an efficient room-temperature aqueous selenization reaction that can be completed in air within less than 1 min, to directly fabricate thin β-Ag2 Se films consisting of perfectly crystalline and large columnar grains with both in-plane randomness and out-of-plane [201] preferred orientation, is designed. A high power factor (PF) of 2590 ± 414 µW m-1 K-2 and a figure-of-merit (zT) of 1.2 ± 0.42 are obtained from a sample with a thickness of ≈1 µm. The maximum output power density of the best 4-leg thermoelectric generator sample reach 27.6 ± 1.95 and 124 ± 8.78 W m-2 at room temperature with 30 and 60 K temperature differences, respectively, which may be useful in future flexible thermoelectric devices.

Microstructurally Tailored Thin β‐Ag<sub>2</sub>Se Films toward Commercial Flexible Thermoelectrics

Microstructurally Tailored Thin β‐Ag2Se Films toward Commercial Flexible Thermoelectrics

Microstructurally Tailored Thin β‐Ag₂Se Films toward Commercial Flexible Thermoelectrics