无机材料学报2011，Vol.26Issue(7)：680-684,5.DOI:10.3724/SP.J.1077.2011.00680
Na/Se掺杂P-型AgSbTe2化合物热电性能研究
Enhanced Thermoelectric Performance in Na/Se Doped p-type AgSbTe2 Compound
摘要
Abstract
Two types of Na-doped and Na/Se co-doped polycrystalline, sintered samples of p-type AgSbTe2 thermoelectric compounds were prepared from high purity elements by a melt-quench technique followed by spark plasma sintering (I: with excess Na or Na/Se, AgNa0.01SbTe2, AgNa0.01SbTe2Se0.04; II: replacing corresponding elements by Na or Na/Se, Ag0.99Na0.01SbTe2, Ag0.99Nao.01SbTe1.96Se0.04)- The impacts of Na-doping, Na/Se co-doping and doping form on electrical and thermal transport properties were investigated. Meanwhile, by comparing the thermoelectric performance of samples with different kinds of doping form, the optimal doping method is obtained. That is Na replacing Ag, Se replacing Te with appropriate amount of excess Se. Due to the elevation of Seebeck coefficient by Na-doping and optimization of electrical and thermal conductivities by Se-doping, a maximum of ZT merit of 1.4 is achieved at 620 K for sample Ag0.99Na0.01SbTeL96Se0.04. Representing a 17% enhancement with respect to the undoped sample at the same temperature.关键词
AgSbTe2/热电性能/Se/Na/掺杂Key words
AgSbTe2/ thermoelectric property/ Se/ Na/ doping引用本文复制引用
杜保立,李涵,唐新峰..Na/Se掺杂P-型AgSbTe2化合物热电性能研究[J].无机材料学报,2011,26(7):680-684,5.基金项目
国家973计划项目(2007CB607501) （2007CB607501）
中央高校基本科研业务费专项基金(2010-IV-046) （2010-IV-046）
