Effect of Praseodymium and Lanthanum Substitution for Bismuth on the Thermoelectric Properties of BiCuSeO Oxyselenides
- 作者: Novitskii A.1,2, Serhiienko I.1, Novikov S.2, Kuskov K.1, Leybo D.1, Pankratova D.1, Burkov A.2, Khovaylo V.1
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隶属关系:
- National University of Science and Technology MISIS
- Ioffe Institute
- 期: 卷 53, 编号 2 (2019)
- 页面: 215-219
- 栏目: Microcrystalline, Nanocrystalline, Porous, and Composite Semiconductors
- URL: https://journals.rcsi.science/1063-7826/article/view/205722
- DOI: https://doi.org/10.1134/S1063782619020180
- ID: 205722
如何引用文章
详细
The results of investigating the thermoelectric properties of the bulk р-type oxyselenides Bi1 –xPrxCuSeO (x = 0, 0.04, 0.08) and Bi0.96La0.04CuSeO obtained by the solid-state reaction technique are presented. The temperature dependences of the thermopower, electrical resistivity, and thermal conductivity are measured at temperatures from room temperature to 800 K. Over the whole temperature range, a decrease in the electrical resistivity and thermopower is observed with increasing substitution level, while the thermal conductivity is almost unaffected by the substitution of rare-earth elements for bismuth. Despite the nominal valence of Bi, La, and Pr being the same, the replacement of bismuth by rare-earth ions leads to an increase in the charge-carrier concentration, which may be caused by a difference in the electronic configurations of ions, resulting in a shift of the Fermi level to the valence band.
作者简介
A. Novitskii
National University of Science and Technology MISIS; Ioffe Institute
编辑信件的主要联系方式.
Email: novitskiy@misis.ru
俄罗斯联邦, Moscow, 119049; St. Petersburg, 194021
I. Serhiienko
National University of Science and Technology MISIS
Email: novitskiy@misis.ru
俄罗斯联邦, Moscow, 119049
S. Novikov
Ioffe Institute
Email: novitskiy@misis.ru
俄罗斯联邦, St. Petersburg, 194021
K. Kuskov
National University of Science and Technology MISIS
Email: novitskiy@misis.ru
俄罗斯联邦, Moscow, 119049
D. Leybo
National University of Science and Technology MISIS
Email: novitskiy@misis.ru
俄罗斯联邦, Moscow, 119049
D. Pankratova
National University of Science and Technology MISIS
Email: novitskiy@misis.ru
俄罗斯联邦, Moscow, 119049
A. Burkov
Ioffe Institute
Email: novitskiy@misis.ru
俄罗斯联邦, St. Petersburg, 194021
V. Khovaylo
National University of Science and Technology MISIS
Email: novitskiy@misis.ru
俄罗斯联邦, Moscow, 119049