Schematic representation of efficiency enhancement in thermoelectric generators through geometric design and the induction of micro-layered defects in 3D-printed materials. (IMAGE)
Caption
Figure a shows the eight different geometries designed in this study and the optimization of 3D printing and heat treatment processes to create high-density dislocation defects.
Figure b illustrates the thermoelectric figure-of-merit (ZT) as a function of heat treatment temperature, showing an increase to 2.0 when treated at 1233 K.
Figure c displays the power generation efficiency of the eight different thermoelectric geometries. The dotted lines represent the simulated data, while the points indicate the actual measured efficiency.
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POSTECH
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