【摘 要】
：
SbCrSe3 has a unique quasi-one-dimensional structure in which two parallel chains of CrSe6 octahedra are linked by antimony atoms to form the pseudo one dimensional crystal structure.Such quasi-one-di
【机 构】
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Department of Applied Physics,Chongqing University,Chongqing 400044,PR China
【出 处】
：
第六届海内外中华青年材料科学技术研讨会暨第十五届全国青年材料科学技术研讨会
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SbCrSe3 has a unique quasi-one-dimensional structure in which two parallel chains of CrSe6 octahedra are linked by antimony atoms to form the pseudo one dimensional crystal structure.Such quasi-one-dimensional structure may contribute to ultra-low thermal conductivity,a quality that is desirable for good thermoelectricity.In this report,we have achieved ultra-low thermal conductivity of 0.45 W/mK at 923 K,and simultaneously enhanced the power factors of SbCrSe3 by Pb doping.Consequently,the peak ZT value of our best doped sample reaches 0.55 at 923 K,an enhancement by a factor of 55 compared to the parent SbCrSe3.The mechanisms for low thermal conductivity and enhanced electrical conductivity are discussed via Debye-Callaway model and band structure calculation.The results indicate that materials with low dimensional crystallinity possess high potential for thermoelectric applications.
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