%0 Journal Article
%T Ag、Cu掺杂的Bi<sub>2</sub>Te<sub>3</sub>热电材料的制备及特性研究<br>Preparation and Properties of Ag, Cu Doped Bi<sub>2</sub>Te<sub>3</sub> Thermoelectric Material
%A 韩月
%A 李梦轲
%A 张哲
%A 姜珊
%A 柳婕
%A 刘阳
%A 李旺
%A 刘俊
%J Material Sciences
%P 350-359
%@ 2160-7621
%D 2021
%I Hans Publishing
%R 10.12677/MS.2021.114042
%X 采用粉末热压烧结工艺制备了纯Bi<sub>2</sub>Te<sub>3</sub>及少量Ag、Cu元素掺杂的Bi<sub>2</sub>Te<sub>3</sub>片状热电材料。利用XRD、SEM、EDS及热电特性实验分析设备，对不同热电样品的晶体结构、表面形貌、组成成份及热电特性进行了比较分析。研究发现，适量的Ag、Cu元素掺杂确实可提升Bi<sub>2</sub>Te<sub>3</sub>材料的热电特性，相比Cu元素掺杂，Ag掺杂的Bi<sub>2</sub>Te<sub>3</sub>样品热电特性改善最大。在样品高温端温度为356 K条件下，掺杂Ag为0.1 wt%的样品Seebeck系数最大，约为？193.26 μV/K，ZT值也最大，约为1.04。<br />
Pure Bi<sub>2</sub>Te<sub>3</sub> and the Ag and Cu doped Bi<sub>2</sub>Te<sub>3</sub> sheet thermoelectric material samples with different mass percentage were prepared by powder hot-pressing sintering method. The crystal structure, surface morphology, composition and thermoelectric properties of the synthesized samples were analyzed by XRD, SEM, EDS and the self-made thermoelectric characteristic testing equipment. It is found that the appropriate amount of Ag and Cu element doping into Bi<sub>2</sub>Te<sub>3</sub> thermoelectric material can indeed improve its thermoelectric properties. Compared with the sample doped with Cu element, the Ag doped Bi<sub>2</sub>Te<sub>3</sub> sample showed the best improvement in the thermoelectric proper-ties. Under the condition that the testing temperature is 356 K, the Seebeck coefficient of Bi<sub>2</sub>Te<sub>3</sub> sample doped Ag element with 0.1 wt% is the largest, which is about ？193.26 μV/K, and its Zt value is also the largest, which is about 1.04.
%K Bi<sub>2</sub>Te<sub>3</sub>，掺杂，热电<br>Bi<sub>2</sub>Te<sub>3</sub>
%K Doped
%K Thermoelectric
%U http://www.hanspub.org/journal/PaperInformation.aspx?PaperID=41623