Reinvestigation of the thermoelectric properties of Ag8GeTe6
Reinvestigation of the thermoelectric properties of Ag8GeTe6
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DOI：
10.1002/pssr.200701302
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发表时间：
2008-03-01
影响因子：
2.8
通讯作者：
Yamanaka, Shinsuke
中科院分区：
文献类型：
--
作者：
Charoenphakdee, Anek;Kurosaki, Ken;Yamanaka, Shinsuke
以Ag2Te、GeTe和Te为原料，通过固相反应和热压工艺制备了高密度的Ag8GeTe6多晶样品(超过理论密度的98%)。Ag8GeTe6的热电性能是在从室温到约700K的温度范围内测量的，导热值非常低(室温下为0.25Wm(-1)K-1)，因此Ag8GeTe6表现出相对较高的热电优值系数，在703K时ZT=0.48。
High-density polycrystalline samples (above 98% of the theoretical density) of Ag8GeTe6 were prepared by solid-state reactions of Ag2Te, GeTe, and Te, followed by hot-pressing. The thermoelectric properties were measured at temperatures ranging from room temperature to around 700 K. The thermal conductivity values were extremely low (0.25 Wm(-1) K-1 at room temperature), and consequently Ag8GeTe6 exhibited a relatively high thermoelectric figure of merit, ZT = 0.48 at 703 K. (c) 2008 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim.