Thermoelectric Properties of n-type (Bi2Se3)x(Bi2Te3)1-x Crystals Prepared by Zone Melting

摘要：

　　In the present study,n-type (Bi2Se3)x(Bi2Te3)1-x crystals with various chemical compositions were fabricated by the zone melting method.Thermoelectric properties,including Seebeck coefficient (α),electrical conductivity (σ) and thermal conductivity (κ),were measured in the temperature range of 300-500 K.The influence of the variations of Bi2Te3 and Bi2Se3 content on thermoelectric properties was studied.The increase of Bi2Se3 content (x) caused an increase in carrier concentration and thus an increase of σ and a decrease of α.The maximum figure of merit (ZT =α2σT/κ) of 0.87 was obtained at about 325 K for the composition of 93%Bi2Te3-7%Bi2Se3 with doping TeI4.

关键词： Zone Melting Bi-Te-Se Thermoelectric Properties

作者: Jun Jiang Yali Li Gaojie Xu Ping Cui Lidong Chen

作者单位: Ningbo Institute of Materials Technology and Engineering,Chinese Academy of Sciences,Ningbo 315040,P Shanghai Institute of Ceramics,Chinese Academy of Sciences,Shanghai 200050,PR China

会议类型: 国际会议

会议名称: The Fifth China International Conference on High-Performance Ceramics (第五届先进陶瓷国际研讨会(CICC-5))

会议地点: 长沙

会议语种:英文

页码: 547-549

在线出版日期: 2007-05-10（万方平台首次上网日期，不代表论文的发表时间）