Jump to main content
Jump to site search

Issue 14, 2014
Previous Article Next Article

The roles of Na doping in BiCuSeO oxyselenides as a thermoelectric material

Author affiliations

Abstract

The thermoelectric properties of the Bi1−xNaxCuSeO (0.0 ≤ x ≤ 0.02) system have been investigated in the temperature range 300–923 K. Na doping significantly increased the carrier concentration to ∼0.92 × 1020 cm−3 at the doping amount of x = 0.02. Furthermore, a relatively high carrier mobility and a slight Seebeck coefficient enhancement was seen, thus resulting in a high power factor of 8.0 μW cm−1 K−2 at room temperature. Coupled with a low thermal conductivity reduced by point defects scattering, this leads to a ZT of 0.91 at 923 K for Bi0.985Na0.015CuSeO which is nearly twice the value observed in pristine BiCuSeO.

Graphical abstract: The roles of Na doping in BiCuSeO oxyselenides as a thermoelectric material

Back to tab navigation

Supplementary files

Publication details

The article was received on 05 Nov 2013, accepted on 19 Jan 2014 and first published on 03 Mar 2014


Article type: Communication
DOI: 10.1039/C3TA14532H
Citation: J. Mater. Chem. A, 2014,2, 4903-4906
  •   Request permissions

    The roles of Na doping in BiCuSeO oxyselenides as a thermoelectric material

    J. Li, J. Sui, Y. Pei, X. Meng, D. Berardan, N. Dragoe, W. Cai and L. Zhao, J. Mater. Chem. A, 2014, 2, 4903
    DOI: 10.1039/C3TA14532H

Search articles by author

Spotlight

Advertisements