热电效应
材料科学
塞贝克系数
价带
密度泛函理论
电子能带结构
电子结构
兴奋剂
凝聚态物理
工作职能
工作(物理)
热电材料
电子波段
带隙
化学物理
纳米技术
光电子学
热力学
计算化学
化学
物理
图层(电子)
作者
Yongxin Qin,Dongyang Wang,Zhenghao Hou,Yu Xiao,Guangtao Wang,Zhiwei Huang,Li‐Dong Zhao
标识
DOI:10.1016/j.scriptamat.2020.04.023
摘要
In this work we investigated the thermoelectric transport behaviors of p-type PbS and n-type PbS with an emphasis on its contrasting electronic band structures. We found that the Seebeck coefficients of p-type PbS increased faster with rising temperature than that of n-type PbS with the same carrier concentration. The Density functional theory (DFT) calculation of the energy band structure of PbS as a function of temperature illustrates a significant contribution from multiple valence bands in K-doped p-type PbS. This work revealed one important information that manipulating electronic bands is also suitable in developing high-performance PbS thermoelectric systems.
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