TY - JOUR
T1 - Thermoelectric transport properties of BaBiTe3-based materials
AU - Zhou, Yiming
AU - Zhao, Li Dong
N1 - Publisher Copyright:
© 2017 Elsevier Inc.
PY - 2017/5/1
Y1 - 2017/5/1
N2 - BaBiTe3, a material with low thermal conductivity, is an inferior thermoelectric material due to the poor electrical properties originated from its narrow band gap. We choose two types of dopants, K and La, trying to optimize its electrical transport properties. The minority carriers, which harm the Seebeck coefficient in this system, are suppressed by La doping. With the increase of both electrical conductivity and Seebeck coefficient, the power factor of 3% La doped BaBiTe3 reaches 3.7 μW cm−1 K−2 which increased by 40% from undoped BaBiTe3. Besides high power factor, the thermal conductivity is also reduced in it. Eventually, a high ZT value, 0.25 at 473 K, for n-type BaBiTe3 is achieved in 3% La doped BaBiTe3.
AB - BaBiTe3, a material with low thermal conductivity, is an inferior thermoelectric material due to the poor electrical properties originated from its narrow band gap. We choose two types of dopants, K and La, trying to optimize its electrical transport properties. The minority carriers, which harm the Seebeck coefficient in this system, are suppressed by La doping. With the increase of both electrical conductivity and Seebeck coefficient, the power factor of 3% La doped BaBiTe3 reaches 3.7 μW cm−1 K−2 which increased by 40% from undoped BaBiTe3. Besides high power factor, the thermal conductivity is also reduced in it. Eventually, a high ZT value, 0.25 at 473 K, for n-type BaBiTe3 is achieved in 3% La doped BaBiTe3.
KW - BaBiTe
KW - Electrical conductivity
KW - Seebeck coefficient
KW - Thermal conductivity
KW - Thermoelectric
UR - https://www.scopus.com/pages/publications/85014030702
U2 - 10.1016/j.jssc.2017.02.025
DO - 10.1016/j.jssc.2017.02.025
M3 - 文章
AN - SCOPUS:85014030702
SN - 0022-4596
VL - 249
SP - 131
EP - 135
JO - Journal of Solid State Chemistry
JF - Journal of Solid State Chemistry
ER -