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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 was studied. A series of N-type and P-type solid solution alloys were prepared by the best process conditions. The series of samples Thermoelectric properties. The results show that the N type Si80Ge20 (P4) x solid solution alloy with x = 1.5 has good thermoelectric properties. Compared with the undoped Si80Ge20 solid solution alloy, the highest pyroelectric ZT value is 0.651, which is 3.34 times higher. The P type Si80Ge20Bx solid solution alloy with x = 1.5 also has better thermoelectric properties with a maximum ZT value of 0.538.