2023.3Vol.47No.3研究与设计收稿日期:2022-08-16作者简介:陈媛媛(1983—),女,天津市人,高级工程师,主要研究方向为温差电技术。Sb元素掺杂对GeTe-PbTe材料热电性能的影响陈媛媛,刘佳林,阎勇(中国电子科技集团公司第十八研究所,天津300384)摘要:以(GeTe)0.91(PbTe)0.09固溶体合金为研究对象,通过掺杂Sb元素来降低载流子浓度,探索Sb元素含量对(GeTe)0.91(PbTe)0.09材料热电性能的影响机制,提升材料热电性能。通过熔炼、真空热压、退火结合工艺制备了一系列(GeTe)0.91-x(PbTe)0.09(SbTe)x材料样品,对其热电性能进行表征和研究。结果表明:掺杂Sb元素后,成分为(GeTe)0.85-(PbTe)0.09(SbTe)0.06材料热电性能最好,其ZT值在773K条件下可达到1.65。将(GeTe)0.91(PbTe)0.09材料和(GeTe)0.85-(PbTe)0.09(SbTe)0.06材料制成温差电单偶,测试单偶的热电转换效率,(GeTe)0.85(PbTe)0.09(SbTe)0.06材料单偶的热电转换效率可达(GeTe)0.91(PbTe)0.09材料单偶的201.5%。关键词:(GeTe)0.91(PbTe)0.09;Sb掺杂;热电性能;热电转换效率中图分类号:TM913文献标识码:A文章编号:1002-087X(2023)03-0374-03DOI:10.3969/j.issn.1002-087X.2023.03.023EffectofthermoelectricpropertiesofSbelementdopingonGeTe-PbTematerialsCHENYuanyuan,LIUJialin,YANYong(TianjinInstituteofPowerSources,Tianjin300384,China)Abstract:(GeTe)0.91(PbTe)0.09solid-solutionalloywastakenastheresearchobject,thecarrierconcentrationwasreducedbySbelementdoping,theinfluencemechanismofSbelementcontentonthethermoelectricpropertiesof(GeTe)0.91(PbTe)0.09materialwasstudied,andthethermoelectricpropertiesofthematerialwereimproved.Aseriesof(GeTe)0.91-x(PbTe)0.09(SbTe)xsampleswerepreparedbymelting,vacuumhotpressingandannealing,andtheirthermoelectricpropertieswerecharacterizedandstudied.TheresultsshowthatafterdopingSb,thematerialwithcompositionof(GeTe)0.85(PbTe)0.09(SbTe)0.06hasthebestthermoelectricproperties,anditsZTvaluecanreach1.65at773K.Thethermoelectricsinglecouplewasmadeof(GeTe)0.91(PbTe)0.09materialand(GeTe)0.85(PbTe)0.09(SbTe)0.06material.Thethermoelectricconversionefficiencyofthesinglecouplewastested.Thethermoelectricconversionefficiencyofthesinglecoupleof(GeTe)0.85(PbTe)0.09(SbTe)0.06materialr...