TY  - JOUR
AU  - Wang, Jiangjing
AU  - Zhou, Chongjian
AU  - Yu, Yuan
AU  - Zhou, Yuxing
AU  - Lu, Lu
AU  - Ge, Bangzhi
AU  - Cheng, Yudong
AU  - Jia, Chun-Lin
AU  - Mazzarello, Riccardo
AU  - Shi, Zhongqi
AU  - Wuttig, Matthias
AU  - Zhang, Wei
TI  - Enhancing thermoelectric performance of Sb2Te3 through swapped bilayer defects
JO  - Nano energy
VL  - 79
SN  - 2211-2855
CY  - Amsterdam [u.a.]
PB  - Elsevier
M1  - FZJ-2022-01231
SP  - 105484 -
PY  - 2021
AB  - Lattice defects are typically used to tailor the thermoelectric properties of materials. It is desirable that such defects improve the electrical conductivity, while, at the same time, reduce the thermal conductivity, for an overall improvement on the thermoelectric properties of materials. Here, we report on an extended defect in Sb2Te3 consisting of swapped bilayers with chemical intermixing of Sb and Te atoms, which can be generated and effectively manipulated in polycrystalline samples through synthetic methods and thermal treatments. The swapped bilayers bridge the spatial gaps between the Sb2Te3 quintuple-layer blocks, enhancing the charge carrier mobility and thus the electrical conductivity. These defects also result in a reduced lattice thermal conductivity through suppressing phonon transport. These synergistic effects contribute together to an improved thermoelectric quality factor and an enhanced figure of merit (zT) value in Sb2Te3.
LB  - PUB:(DE-HGF)16
UR  - <Go to ISI:>//WOS:000620507900001
DO  - DOI:10.1016/j.nanoen.2020.105484
UR  - https://juser.fz-juelich.de/record/906110
ER  -