1. Department of Applied Physics, Chongqing University, Chongqing 400044, China;
2. Chongqing Institute of Green and Intelligent Technology, Chinese Academy of Sciences, Chongqing 400714, China
We report the synthesis of Nd-filled and Fe substituted p-type NdxFe3.2Co0.8Sb12 (x=0.5, 0.6, 0.7, 0.8, and 0.9) skutterudites by the solid-state reaction method. The influences of Nd filler on the electrical and thermal transport properties are investigated in a temperature range from room temperature to 850 K. A lowest lattice thermal conductivity of 0.88 W·m-1·K-1 is obtained in Nd0.8Fe3.2Co0.8Sb12 at 673 K, which results from the localized vibration modes of fillers and the increase of grains boundaries. Meanwhile, the maximum power factor is 2.77 mW·m-1·K-2 for the Nd0.9Fe3.2Co0.8Sb12 sample at 668 K. Overall, the highest dimensionless figure of merit zT=0.87 is achieved at 714 K for Nd0.9Fe3.2Co0.8Sb12.
Project supported by the National Natural Science Foundation of China (Grant Nos. 11674040, 11404044, 51472036, 51672270, and 51401202), the Fundamental Research Funds for the Central Universities (Grant No. 106112016CDJZR308808), the 100 Talent Program of the Chinese Academy of Sciences (Grant No. 2013-46), and the Project for Fundamental and Frontier Research in Chongqing, China (Grant No. CSTC2015JCYJBX0026).
A self-powered and sensitive terahertz photodetection based on PdSe2 Jie Zhou(周洁), Xueyan Wang(王雪妍), Zhiqingzi Chen(陈支庆子), Libo Zhang(张力波), Chenyu Yao(姚晨禹), Weijie Du(杜伟杰), Jiazhen Zhang(张家振), Huaizhong Xing(邢怀中), Nanxin Fu(付南新), Gang Chen(陈刚), and Lin Wang(王林). Chin. Phys. B, 2022, 31(5): 050701.
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