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	Exceptional Thermoelectric Performance Enabled by High Carrier Mobility and Intrinsically Low Lattice Thermal Conductivity in Phosphide Cd3P2
	Fan, Lizhu1; Peng, Kunling1; Zhou, Zizhen1; Yan, Yanci1; Ran, Chen1; Wang, Honghui1; Han, Guang2; Zhang, Bin3; Lu, Xu1; Wang, Guoyu4
	2022-02-22
摘要	A novel thermoelectric Cd3P2 is obtained via regulating carrier concentrations. Ultrahigh carrier mobilities over 1500 cm(2) V-1 s(-1) are observed at room temperature, which is attributed to small band effective mass and confirmed by the electronic structure calculation. Meanwhile, the intrinsically low lattice thermal conductivity below 1.0 W m(-1) K(-1)( )in the investigated temperature range is found due to the complex crystal structure and low sound velocity. Combined with high mobility and low thermal conductivity, a peak zT of 0.91 at 673 K and an excellent average zT of 0.57 over 300-673 K are obtained in Cd3P2-based compounds, which are record-high values among phosphides. This study highlights the potential of exploring high-performance novel thermoelectric materials in compounds with high carrier mobility.
DOI	10.1021/acs.chemmater.1c03619
发表期刊	CHEMISTRY OF MATERIALS
ISSN	0897-4756
卷号	34期号:4页码:1620-1626
通讯作者	Peng, Kunling(klpeng@ustc.edu.cn) ; Wang, Guoyu(guoyuw@cigit.ac.cn) ; Zhou, Xiaoyuan(xiaoyuan2013@cqu.edu.cn)
收录类别	SCI
WOS记录号	WOS:000812131900001
语种	英语