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

Jing Li; Jiehe Sui; Yanling Pei; Xianfu Meng; David Berardan; Nita Dragoe; Wei Cai; Li Dong Zhao

doi:10.1039/c3ta14532h

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

Jing Li
, Jiehe Sui^*
, Yanling Pei
, Xianfu Meng
, David Berardan
, Nita Dragoe
, Wei Cai
, Li Dong Zhao

^*Corresponding author for this work

School of Materials Science and Engineering

Harbin Institute of Technology
Institut de Chimie Moléculaire et des Matériaux d'Orsay

Research output: Contribution to journal › Article › peer-review

156 Scopus citations

Abstract

The thermoelectric properties of the Bi_1-xNa_xCuSeO (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 Bi_0.985Na_0.015CuSeO which is nearly twice the value observed in pristine BiCuSeO. This journal is

Original language	English
Pages (from-to)	4903-4906
Number of pages	4
Journal	Journal of Materials Chemistry A
Volume	2
Issue number	14
DOIs	https://doi.org/10.1039/c3ta14532h
State	Published - 14 Apr 2014

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title = "The roles of Na doping in BiCuSeO oxyselenides as a thermoelectric material",

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. This journal is",

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T1 - The roles of Na doping in BiCuSeO oxyselenides as a thermoelectric material

AU - Li, Jing

AU - Sui, Jiehe

AU - Pei, Yanling

AU - Meng, Xianfu

AU - Berardan, David

AU - Dragoe, Nita

AU - Cai, Wei

AU - Zhao, Li Dong

PY - 2014/4/14

Y1 - 2014/4/14

N2 - 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. This journal is

AB - 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. This journal is

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

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