摘要
对N型Si80Ge20(P4)x及P型Si80Ge20Bx固溶体合金的化学计量比进行了研究,采用已总结出的最佳工艺条件,制备了一系列N型、P型固溶体合金,并比较了各系列样品的热电性能。结果表明,x=1.5的N型Si80Ge20(P4)x固溶体合金具备良好的热电性能,与未掺杂Si80Ge20固溶体合金相比,最高热电优值ZT为0.651,提高了3.34倍。x=1.5的P型Si80Ge20Bx固溶体合金也具备较佳的热电性能,最高热电优值(ZT)值为0.538。
The stoichiometric ratio of N-type Si80Ge20（P4）x and P-type Si80Ge20Bx solid solution alloys were investigated.A series of N-type and P-type solid solution alloys were prepared under optimum doping conditions,and the thermoelectric properties of each series of samples were compared.The results indicate that the N-type Si80Ge20（P4）1.5 solid solution alloys have good thermoelectric properties when x=1.5.Significant improvement in ZT with a peak value about 0.651 at 500 ℃ in N-type Si80Ge20（P4）1.5 is obtained,which is 3.34 times than that of the undoped Si80Ge20 solid solution alloys.The P-type Si80Ge20B1.5 solid solution alloys also have good thermoelectric properties achieved the highest ZT of 0.538.
出处
《材料热处理学报》
EI
CAS
CSCD
北大核心
2013年第7期6-11,共6页
Transactions of Materials and Heat Treatment
基金
国家自然科学基金资助项目(51171117)
广东省科技计划项目(2006B14001001)
深圳市科技计划项目(CXB200903090012A)
关键词
热电材料
Si80Ge20
粉末冶金
热电性能
thermoelectric material
Si80Ge20
Powder metallurgy
thermoelectric properties
