Ag 2 Te掺杂对p型Bi 0.5 Sb 1.5 Te 3 块状合金热电性能的影响
Source abstract
Abstract
采用真空熔炼、机械球磨及放电等离子烧结技术（SPS）制备得到了（Ag2Te）x（Bi0.5Sb1.5Te3）1-x（x=0,0.025,0.05,0.1）系列样品,性能测试表明,Ag2Te的掺入可以显著改变材料的热电性能变化趋势,掺杂样品在温度为450-550K范围内具有较未掺杂样品更优的热电性能.适当量的Ag2Te掺入能够有效地提高材料的声子散射,降低材料的热导率.在测试温度范围内,（Ag2Te）0.05（Bi0.5Sb1.5Te3）0.95具有最低的晶格热导,室温至575K范围内保持在0.2-0.3W/（m·K）之间,在575K时,（Ag2Te）0.05（Bi0.5Sb1.5Te3）0.95试样具有最大热电优值ZT=0.84,相较于未掺杂样品提高了约20%.
Source: openalex_inverted_index · Quality: baseline
Research context
OpenAlex topics: Advanced Thermoelectric Materials and Devices · Metallurgical and Alloy Processes · Topological Materials and Phenomena
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