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Evaluating the effect of grain size distribution on thermal conductivity of thermoelectric materials
Nano Express ( IF 2.7 ) Pub Date : 2020-09-09 , DOI: 10.1088/2632-959x/abb43f
Priyabrata Das , Sivaiah Bathula , Srikant Gollapudi

The influence of grain size ( d ) on the thermal conductivity ( k ) of thermoelectric ( TE ) materials has been well established through experimental studies. However, the effect of grain size distribution, described by S n , on k has not been reported before. Since thermal conductivity is a key contributor to the figure of merit ( ZT ) for thermoelectric materials, studying the effect of grain size distribution, an important microstructural descriptor, on k is necessary. In the current study we are evaluating the effect of S n on the k of thermoelectric materials by using data reported in literature on bismuth telluride (Bi 2 Te 3 ) and lead telluride (PbTe). We first check for correlations between k and d . In literature, mathematical correlations between lattice thermal conductivity ( k l ) and d have already been reporte...

中文翻译:

评估粒度分布对热电材料导热系数的影响

通过实验研究已经很好地确定了晶粒尺寸(d)对热电(TE)材料的导热率(k)的影响。但是,Sn所描述的晶粒尺寸分布对k的影响尚未见报道。由于热导率是热电材料品质因数(ZT)的关键因素,因此研究晶粒尺寸分布(一种重要的微观结构描述符)对k的影响是必要的。在当前的研究中,我们正在使用文献报道的碲化铋(Bi 2 Te 3)和碲化铅(PbTe)的数据评估S n对热电材料k的影响。我们首先检查k和d之间的相关性。在文献中,已经报道了晶格热导率(kl)与d之间的数学关系。
更新日期:2020-09-10
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