可焊接热电器件中金属扩散屏蔽层的筛选  

Screening metallic diffusion barriers for weldable thermoelectric devices

作　　者：刘敏 张馨月 唐婧 陈志炜 李文 裴艳中 Min Liu;Xinyue Zhang;Jing Tang;Zhiwei Chen;Wen Li;Yanzhong Pei(Interdisciplinary Materials Research Center,School of Materials Science and Engineering,Tongji University,Shanghai 201804,China)

机构地区：[1]Interdisciplinary Materials Research Center,School of Materials Science and Engineering,Tongji University,Shanghai 201804,China

出　　处：《Science Bulletin》2023年第21期2536-2539,M0004,共5页科学通报（英文版）

基　　金：supported by the National Natural Science Foundation of China(T2125008,52102292,52003198,and 52022068);the Innovation Program of Shanghai Municipal Education Commission(2021-01-07-00-07-E00096)。

摘　　要：热电器件的稳定性主要取决于热电材料与电极界面处的界面稳定性,热电材料与电极之间引入的扩散屏蔽层在热电器件的转换效率和服役稳定性方面发挥着重要作用.此外,可焊接电极还具有将热电元件大规模组装成模块的优势.本文通过高通量筛选研究了几十种扩散屏蔽层/可焊接电极的扩散行为,快速筛选出热电器件潜在的扩散屏蔽层/可焊接电极组合,制备了n型PbTe/Co/Ag单腿器件用于实验验证.实验结果表明选用该方法获得的电极结构具有极低的接触电阻(~5μΩcm^(2)),10%的高转换效率,以及高温下进行1500次测试的良好稳定性.Heat is an important energy resource that supports the developments of civilization.Recovering waste heat substantially has the potential to result in significant fuel savings[1].Thermoelectric technology takes the advantage of directly converting waste heat to electricity,thereby enhancing the energy efficiency[2].

关 键 词：热电器件 热电材料 电极结构 焊接电极 屏蔽层 μΩ 热电元件 界面稳定性 

分 类 号：O472.7[理学—半导体物理]