Effect of Na and Ba co-doping on the structure and thermoelectric performance of PbTe0.5Se0.5

Effect of Na and Ba co-doping on the structure and thermoelectric performance of PbTe0.5Se0.5
复制标题

Na、Ba共掺杂对PbTe0.5Se0.5结构和热电性能的影响

DOI:
10.1016/j.scriptamat.2016.04.009
复制
发表时间:
2016-07
期刊:
影响因子:
6
通讯作者:
Li J. Q.
Li J. Q.
中科院分区:
材料科学1区
文献类型:
--
作者:
Gui Y. Q.;Zheng Y. S.;Liu F. S.;Zhang S. L.;Ao W. Q.;Li Y.;Li J. Q.

文献摘要

参考文献

被引文献

相似文献

基于pbte的半导体热电材料是目前研究的活跃领域。本文采用真空熔炼和火花等离子烧结技术制备了Na和ba掺杂的pbte0.5 se0.5合金。Na掺杂抑制了pbte0.5 se0.5从p型电导率向n型电导率的转变,并调节了载流子浓度。在Na0.02(BaxPb1−x)0.98Te0.5Se0.5的情况下,与未掺杂材料相比,Ba的掺入提高了Seebeck系数,降低了导热系数,提高了热电性能。在723 K下,Na0.02(Ba0.06Pb0.94)0.98Te0.5Se0.5的ZT值高达1.17,比未掺杂样品的ZT值高出约22%。
PbTe-based semiconductor thermoelectric materials are currently active areas of research. In this work, Na- and Ba-doped PbTe0.5Se0.5alloys were prepared by vacuum melting and spark plasma sintering techniques. Na doping suppressed the transition of PbTe0.5Se0.5from p-type to n-type conductivity and adjusted the carrier concentration. In the case of Na0.02(BaxPb1 −x)0.98Te0.5Se0.5, doping with Ba increased the Seebeck coefficient, decreased the thermal conductivity, and improved the thermoelectric performance compared to those of the undoped material. A high figure of merit (ZT) value of 1.17 at 723 K was obtained for Na0.02(Ba0.06Pb0.94)0.98Te0.5Se0.5, which is approximately 22% greater than that of the undoped sample.
通过球磨和半固态粉末加工降低纳米晶 Na 掺杂 PbTe 合金的晶格热导率
DOI: 10.1016/j.matlet.2014.11.015
发表时间: 2015-02
期刊: Materials Letters
影响因子: 3
作者:
Wang H.;Yao Z.;Zhu T.;Chen S.
通讯作者: Chen S.
DOI: 10.1016/0956-716x(95)90843-9
发表时间: 1995-02
期刊: Scripta Metallurgica Et Materialia
影响因子: --
作者:
T. Oh;Jae-Shik Choi;D. Hyun
通讯作者: T. Oh;Jae-Shik Choi;D. Hyun
DOI: 10.1126/science.1072886
发表时间: 2002-09-27
期刊: SCIENCE
影响因子: 56.9
作者:
Harman, TC;Taylor, PJ;LaForge, BE
通讯作者: LaForge, BE
DOI: 10.1016/j.intermet.2006.08.008
发表时间: 2007-03-01
期刊: INTERMETALLICS
影响因子: 4.4
作者:
Kim, Sung-Wng;Kimura, Yoshisato;Mishima, Yoshinao
通讯作者: Mishima, Yoshinao
Mg2Si0.4Sn0.6 基热电材料的高品质因数和天然纳米结构
DOI: 10.1063/1.2981516
发表时间: 2008-09
影响因子: 4
作者:
通讯作者: --