Order-disorder transition and Fano-interference in thermoelectric Cu3SbSe3 nanoparticles

被引：14

作者：

Samanta, K. ^{[1
]}

Gupta, N. ^{[2
]}

Kaur, H. ^{[3
]}

Sharma, L. ^{[3
]}

Pandey, S. Dogra ^{[1
]}

Singh, J. ^{[1
]}

Senguttuvan, T. D. ^{[3
]}

Sharma, N. Dilawar ^{[1
]}

Bandyopadhyay, A. K. ^{[1
]}

机构：

[1] Natl Phys Lab, New Delhi 110012, India

[2] Kurukshetra Univ, Dept Elect Sci, Thanesar 136119, HR, India

[3] Natl Phys Lab, Phys Energy Harvesting Div, New Delhi 110012, India

来源：

MATERIALS CHEMISTRY AND PHYSICS | 2015年 / 151卷

关键词：

Thermoelectric effect; Raman spectroscopy and scattering; Phase transition; PHONONS;

D O I：

10.1016/j.matchemphys.2014.11.042

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Temperature dependent Raman scattering measurements were carried out to investigate the phonon behavior of thermoelectric Cu3SbSe3 nanoparticles. The anomalous behavior of phonon mode (A(g)) frequency with temperature indicates the possibility of a lattice instability related to the order disorder structural transition at 380 K. In the low temperature region (80-250 K) we found an asymmetric line shape of A(g) mode, which is analyzed and discussed in the light of phonon continuum Fano-interference effect. We have obtained the thermal conductivity (K) similar to 2.04 W/mK at room temperature. The change in thermal conductivity with temperature strongly correlates with the change in total anharmonicity of the Cu3SbSe3 lattice. (C) 2014 Elsevier B.V. All rights reserved.

引用

页码：99 / 104

页数：6

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