不同模数对材料热电性能的影响

J4 ›› 2014, Vol. 31 ›› Issue (2): 226-232.

不同模数对材料热电性能的影响

陈燕彬, 罗小光, 何济洲

1 南昌大学信息工程学院，江西南昌 330031; 2 南昌大学理学院，江西南昌 330031; 3 东南大学物理系，江苏南京 211189

出版日期:2014-03-28 发布日期:2014-03-20
通讯作者: 陈燕彬（1962-），女，江西南昌人，实验师，研究方向为光电技术与材料 E-mail:cyb8188@hotmail.com
基金资助:
国家自然科学基金资助(11065008)

Influence of different modulus on the thermoelectric performance of materials

CHEN Yan-Bin，LUO Xiao-Guang，HE Ji-Zhou

1 School of Information Engineering, Nanchang University, Nanchang 330031, China; 2 School of Science, Nanchang University, Nanchang 330031, China; 3 Department of Physics, Southeast University, Nanjing 211189, China

Published:2014-03-28 Online:2014-03-20

摘要/Abstract

摘要： 基于玻尔兹曼传输方程和Landauer方程，研究了一定能谱宽度内模数为常数和Guass型分布的热电优值、电导率和功率因子等热电参数的特性，并与模数为Delta型分布的情况进行对比。结果表明，引入能谱宽度后，热电优值有所下降，但是，电导率和功率因子将增加。这种模数会比Delta型更具有实际意义。

关键词: 材料, 纳米材料, 模数, 热电性能, 弹道传输

Abstract: Based on Boltzmann transport equation and Landauer equation, the characteristics of the thermoelectric parameters such as the figure of merit, electrical conductance and power factor for two kinds of modulus are studied in this paper, including a constant and a Gauss-typed distribution functions with a finite energy spectrum width. Compared with Delta-typed modulus, it is found that the figure of merit will be decreased but the electrical conductance and the power factor will be increased after the spectrum width is introduced. The thermoelectric performance of the two kinds of modulus would be more practically meaningful than that of the Delta-typed modulus.

Key words: material, nanomaterial, modulus, thermoelectric performance, ballistic transport

中图分类号:

O414

陈燕彬, 罗小光, 何济洲. 不同模数对材料热电性能的影响 [J]. J4, 2014, 31(2): 226-232.

CHEN Yan-Bin，LUO Xiao-Guang，HE Ji-Zhou. Influence of different modulus on the thermoelectric performance of materials[J]. J4, 2014, 31(2): 226-232.

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