典型文献
Thermoelectric properties of(GeTe)1-x[(Ag2Te)0.4(Sb2Te3)0.6]x alloys
文献摘要：
The(GeTe)x(AgSbTe2)100-x alloys(TAGS-x)have been demonstrated as a promising p-type candidate for thermoelectric applications,attracting numerous atten-tions on the advancements of thermoelectric performance.Manipulation of carrier concentration for optimizing ther-moelectric performance in TAGS can be achieved by varying the ratio of Ag to Sb,and the Ag/Sb ratio of～2/3 has been proven as the optimal composition.Therefore,this work focuses on the systematic investigation on ther-moelectric properties of(GeTe)i-x[(Ag2Te)0.4(Sb2Te3)0.6]x alloys.The crystal structure for the alloys transfers from rhombohedral to cubic at room temperature as x≥0.2.The evolution of band parameter is estimated using a single parabolic band(SPB)model with acoustic phonon scat-tering.The density of states effective mass increases with x increasing,which leads to an enhancement of Seebeck coefficient along with a reduction in Hall mobility due to the additional carrier scattering by point defects.Mean-while,the lattice thermal conductivity of lower than～0.7 W·m-1·K-1 in the entire temperature range and the lowest one of only 0.45 W·m-1·K-1 is achieved due to additional phonon scattering by point defects.As a result,a peak thermoelectric figure of merit(zT)of～1.80 and an average one of～1.37 in 300-800 K are realized in non-stoichiometric TAGS alloys here.
文献关键词：
中图分类号：
作者姓名：
Hong-Xia Liu;Xin-Yue Zhang;Zhong-Lin Bu;Wen Li;Yan-Zhong Pei
作者机构：
School of Materials Science and Engineering,Taiyuan University of Science and Technology,Taiyuan 030024,China;Laboratory of Magnetic and Electric Functional Materials and the Applications,The Key Laboratory of Shanxi Province,Taiyuan 030024,China;Interdisciplinary Materials Research Center,School of Materials Science and Engineering,Tongji University,Shanghai 201804,China
文献出处：
引用格式：
[1]Hong-Xia Liu;Xin-Yue Zhang;Zhong-Lin Bu;Wen Li;Yan-Zhong Pei-.Thermoelectric properties of(GeTe)1-x[(Ag2Te)0.4(Sb2Te3)0.6]x alloys)[J].稀有金属（英文版）,2022(03):921-930
A类：
Ag2Te,moelectric
B类：
Thermoelectric,properties,GeTe,Sb2Te3,alloys,AgSbTe2,TAGS,have,been,demonstrated,promising,type,candidate,thermoelectric,applications,attracting,numerous,atten,advancements,performance,Manipulation,carrier,concentration,optimizing,achieved,by,varying,has,proven,optimal,composition,Therefore,this,work,focuses,systematic,investigation,crystal,structure,transfers,from,rhombohedral,cubic,room,temperature,evolution,band,parameter,estimated,using,single,parabolic,SPB,model,acoustic,phonon,density,states,effective,mass,increases,increasing,which,leads,enhancement,Seebeck,coefficient,along,reduction,Hall,mobility,due,additional,scattering,point,defects,Mean,while,lattice,thermal,conductivity,lower,than,entire,range,lowest,one,only,result,peak,figure,merit,zT,average,are,realized,stoichiometric
AB值：
0.547379
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