{Reference Type}: Journal Article {Title}: Enhanced thermoelectric properties of hydrothermally synthesized n-type Se&Lu-codoped Bi2Te3 {Author}: SHI, Xiaolei; AI, Xin; ZHANG, Qihao; LU, Xiaofang; GU, Shijia; SU, Li; WANG, Lianjun; Wan, JIANG {Journal}: Journal of Advanced Ceramics {ISBN/ISSN}: 2226-4108 {Year}: 2020 {Volume}: 9 {Issue}: 4 {Pages}: 424-431 {DOI}: 10.1007/s40145-020-0382-9 {Keywords}: thermoelectric material {Keywords}: n-type {Keywords}: bismuth telluride {Keywords}: hydrothermal synthesis {Keywords}: co-doping {Abstract}: N-type Se&Lu-codoped Bi2Te3 nanopowders were prepared by hydrothermal method and sintered by spark plasma sintering technology to form dense samples. By further doping Se element into Lu-doped Bi2Te3 samples, the thickness of the nanosheets has the tendency to become thinner. The electrical conductivity of Lu0.1Bi1.9Te3-xSex material is reduced with the increasing Se content due to the reduced carrier concentration, while the Seeback coefficient values are enhanced. The lattice thermal conductivity of the Lu0.1Bi1.9Te3-xSex is greatly reduced due to the introduced point defects and atomic mass fluctuation. Finally, the Lu0.1Bi1.9Te2.7Se0.3 sample obtained a maximum ZT value of 0.85 at 420 K. This study provides a low-cost and simple low-temperature method to mass production of Se&Lu-codoped Bi2Te3 with high thermoelectric performance for practical applications. {URL}: https://www.sciopen.com/article/10.1007/s40145-020-0382-9 {Language}: en