置换Sb的M(=Bi,Te)掺杂β-Zn_4Sb_3对Seebeck系数的影响

Study on Seebeck Coefficient of M(=Bi,Te)Substituting Sb Dropped inβ-Zn_4Sb_3

研究了置换Sb的M(=Bi,Te)掺杂热电材料β-Zn4Sb3对其Seebeck系数随温度及参杂量变化的定量关系.通过非线性数值拟合,找到了满足这一关系的函数为高斯函数,并给出对应不同掺杂的具体函数.同时,给出一些新的、有意义的结论.通过数据比较发现,理论计算与实验数据之间的最小的相关系数为0.998 59,最大的平均相对误差仅为0.35%.

The Seeback eofficient of M（ =Bi, Te） substituting Sb droped in thermoelectric material β-Zn4 Sbs and the related temperature were studied quantitatively. Based on nonlinear simulation, the Gaussian function was found to be a suitable expression to predict the Seebeck cofficient at any temperature in testing range, and definite expressions were given corresponding to different dopant concentration. Meanwhile, some new and significant conclusions never appeared were summarized. The experimental data match the calculating data very well since the lowest correlation coefficient and the largest average relative error between them are 0. 99859 and 0.35 % in all considered cases respectively.