BİLDİRİLER

BİLDİRİ DETAY

Cihat BOYRAZ, Adil GÜLER
PROCESS, AND PHYSICAL PROPERTIES OF 3D TRANSITION ION DOPED-TETRAHEDRITE COMPOUNDS.
 
The need to identify new energy sources as alternatives or to repurpose waste energy is becoming increasingly pressing due to the world's increasing energy consumption. Due to constant waste in our everyday lives—from industry to body heat the heat energy is one of the main categories of waste energies. Because there is so much waste heat in daily life, researchers are compelled to develop alternate materials and learn more about the topic of thermoelectricity in physics, which is a topic that has to be improved. A thermoelectric material is suitable for industrial applications because to its short synthesizing time, low material cost, accessibility, reduced usage risk, and nontoxicity. Tetrahedrites, one of the most common TE minerals on Earth, are among the thermoelectric material family. When doped with transition metals, they have significant thermoelectric capabilities that need to be enhanced. Tetrahedrites have the parent chemical formula Cu12Sb4S13. Its defect zinc-blende lattice ensures a favorable "crystalline" channel for electron transport, and its intrinsic low lattice thermal conductivity (κL = 0.4W m−1 K−1 at 700 K) is due to certain properties in its crystal structure. The primary material used in this work was Cu12Sb4S13 tetrahedrite doped with 3d ions, such as Sb and As, which was created utilizing the solid state reaction technique. For the Cu12Sb4S13 tetrahedrite samples doped with Sb and As, the annealing process was optimized. X-ray diffraction (XRD) was used to characterize the structure. Particle size and elemental composition were determined using an in-situ electron dispersive spectroscopy (EDS) and a scanning electron microscope (SEM), respectively. As seen in the pictures, the compositions were further examined using vibrating sample magnetometers (VSM) and electron spin resonance (EPR) instruments. ORCID NO: 0000-0002-3508-7703

Anahtar Kelimeler: Tetrahedrides, Figure of Merit, Thermoelectric



 


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