Texture Engineering to Boost the Thermoelectric Properties  

作　　者：Kivanc Saglik Xianyi Tan Ady Suwardi Alex Qingyu Yan 

机构地区：[1]Department of Materials Science and Engineering,Nanyang Technological University,Singapore 639798,Singapore [2]Institute of Materials Science and Engineering,Agency for Science Technology and Research(A*STAR),Singapore 138634,Singapore [3]Department of Materials Science and Engineering,National University of Singapore,Singapore 117575,Singapore

出　　处：《Transactions of Tianjin University》2023年第3期189-195,共7页天津大学学报（英文版）

基　　金：support from the A*STAR’s Science and Engineering Research Council;Sustainable Hybrid Lighting System for Controlled Environment Agriculture Program: A19D9a0096;Singapore MOE AcRF Tier 2 under Grant (No.2018-T2-1-010);funding from the A*STAR’s Career Development Award (No.C210112022)。

摘　　要：A round 60% of useful energy is wasted in industry, homes, or transportation. Therefore, there has been increasing attention on thermoelectric materials for their ability to harvest waste heat into useful energy. The efficiency of a thermoelectric material depends on its electrical conductivity, Seebeck coefficient, and thermal conductivity in a conflicting manner which results in efficiency optimization challenges. Single crystals and polycrystalline layered materials have comparatively better thermoelectric and mechanical properties in a certain direction. Texture engineering is a special strategy that allows the exploitation of superior material properties in a specific direction. Texturing could be achieved by various sintering and deformation methods, which yield defects improving thermoelectric and mechanical properties. The results show that for(Bi,Sb)_(2)Te_(3), Bi_(2)(Se,Te)_(3), C uSbSe_(2), and SnSe, significant enhancement in the thermoelectric figure of merit is achieved by enhancing the preferred orientation. Texture engineering provides a wide range of strategies to elevate the zT of anisotropic materials to values comparable to those of their single crystalline counterparts.

关 键 词：Texture engineering THERMOELECTRICITY Hot forging Layered materials ANISOTROPY DEFECTS 

分 类 号：TB34[一般工业技术—材料科学与工程]