含锑纳米夹杂物的碲化铅纳米复合材料的热电性能增强

Enhanced Thermoelectric Performance of PbTe Nanocomposites with Sb Nanoinclusions.

作者信息

Liu Mian, Ma Wendong

机构信息

Center for Magnetic Materia ls and Devices, College of Physics and Electronic Engineering, Qujing Normal University, Qujing 655011, China.

Key Laboratory for Advanced Functional and Low Dimensional Materials of Yunnan Higher Education Institute, Qujing Normal University, Qujing 655011, China.

出版信息

ACS Omega. 2024 Apr 4;9(15):17097-17103. doi: 10.1021/acsomega.3c09241. eCollection 2024 Apr 16.

DOI:10.1021/acsomega.3c09241

PMID:38645313

原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC11025076/

Abstract

In the present work, the thermoelectric properties of PbTe embedded with spherical Sb nanoscale inclusions were calculated in detail, following the idea that energy-selective carrier scattering can effectively increase the Seebeck coefficient. The quantitative relationships between such nanostructures in PbTe and thermoelectric properties indicated that interface potential barrier induced by Sb nanoinclusions results in a significant enhancement of the Seebeck coefficient, especially when around room temperature. Furthermore, the optimal parameters for boosting the thermoelectric performance of PbTe were found to be 4 nm-radius Sb nanoinclusions with high concentration.

摘要

在本工作中，按照能量选择性载流子散射可有效提高塞贝克系数这一思路，详细计算了嵌入球形锑纳米尺度内含物的碲化铅的热电性能。碲化铅中此类纳米结构与热电性能之间的定量关系表明，锑纳米内含物引起的界面势垒导致塞贝克系数显著提高，尤其是在室温左右时。此外，发现提高碲化铅热电性能的最佳参数是具有高浓度的半径为4纳米的锑纳米内含物。