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Thermoelectric Property of A-Site Deficient Zn0.5Rh2O4

机译:少铝锌矿Zn0.5Rh2O4的热电性能

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@@ Introduction Thermoelectric materials have been attracted for recycling energy in exhausting heat by thermal-electric conversion effect, which can be closely used and be considered as a new energy resource in human lives. The thermal-electric conversion efficiency is represented by a dimensionless figure of merit: ZT=S2a T/K, where S, a and K are Seebeck coefficient, electrical conductivity, and thermal conductivity, respectively. Accordingly, thermoelectric materials should be designed with higher S, a and lower K. According to the classical semiconductor theory, heavily doped semiconductors having carrier concentrations (n) of ~ 1019 cm3 are candidates for high-ZT materials [1], but metallic materials are not. Thus the discovery of large S (~ 100 |JY/K at 300 K) in NaxCoO2, showing metallic a with n of ~ 1021 cm3, has attracted much attention for its origin of high ZT [2].
机译:@@简介热电材料因热电转换效应而被用于回收热量中的能量,这种热电材料可以被紧密利用并被视为人类生活中的一种新能源。热电转换效率由无因次的品质因数表示:ZT = S2a T / K,其中S,a和K分别为塞贝克系数,电导率和导热率。因此,热电材料应设计为具有较高的S,a和较低的K。根据经典半导体理论,载流子浓度(n)为〜1019 cm3的重掺杂半导体是高ZT材料的候选材料[1],但是金属材料不是。因此,在NaxCoO2中发现大的S(在300 K时为〜100 | JY / K),显示出n为〜1021 cm3的金属a,因其高ZT的缘故而受到了广泛的关注[2]。

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