Tsinghua University

Sin-Jie Wu

Sinn-Wen Chen

Thermoelectric material has attracted more attentions as a promising energy material in recent years. Research nowadays are devoted to improvement of figure-of-merit (zT=ST/&#x3c1;&#x3ba;). Motivated by p-type AgSbTecompound, ternary Ag&#x2014;Sb&#x2014;Te has been reported as an important thermoelectric system. Although ternary AgSbTecompound has been considered as a candidate for thermoelectric materials with the advantages of low thermal conductivity (&#x3ba;=0.6 WKm), the relatively high electrical resistivity (&#x3c1;=7.5*10&#x3a9;cm) has limited its applications. This invention disclosed brand-new Ag&#x2014;Sb&#x2014;Te bulk materials with very fine microstructures that nanoscale AgTe phase precipitate uniformly in the multi-phase matrix through class I reaction, liquid=AgTe+AgSbTe+&#x3b4;. Moreover, the electrical resistivity (&#x3c1;) measured by four-probe method is as low as 8.4*10(&#x3a9;cm) at room temperature, which guarantees the promise of those ternary bulk materials.

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Hsinchu, Taiwan

Sin-Jie Wu