Publications by authors named "Patrick Kawulok"
The synthesis of phase-pure ternary solutions of tetradymite-type materials (Bi Sb ) Te (x=0.25; 0.50; 0.
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- Phase-pure crystalline BiSe and BiTe nanoparticles are synthesized using ionic liquids, resulting in high-quality materials with stoichiometric compositions (Bi:E = 2:3) and minimal surface contamination.
- These nanoparticles demonstrate impressive thermoelectric properties, with high Seebeck coefficients (-124 μV K for BiSe and -155 μV K for BiTe) and excellent electrical conductivities (328 S cm for BiSe and 946 S cm for BiTe) at elevated temperatures (240 °C).
- The low levels of impurities and defects from this synthesis method lead to competitive thermal conductivities (0.8 W m K for BiSe and 2.3 W m K for BiTe), achieving promising peak figure of merit