Ternary CuSbSe2 chalcostibite: facile synthesis, electronic-structure and thermoelectric performance enhancement
Ternary CuSbSe2 chalcostibite: facile synthesis, electronic-structure and thermoelectric performance enhancement
复制标题
三元 CuSbSe2 黄铜矿:易于合成、电子结构和热电性能增强
DOI:
10.1039/c6ta00039h
复制
发表时间:
2016-03
影响因子:
11.9
通讯作者:
Zhou, Zhiwei
中科院分区:
文献类型:
--
作者:
Fu, Liangwei;Xiao, Ye;Luo, Yubo;Zhou, Zhiwei
A single phase CuSbSe2 polycrystalline chalcostibite compound has been facilely synthesized through mechanical alloying for the first time, and the phase evolution has been revealed in detail. The large Seebeck coefficient and poor electrical conductivity of this compound are ascribed to the existing Cu–Se ionic bonding and heavy band at the VBM. The active lone-pair s2 electrons in Sb3+ ions are likely to be responsible for the experimentally observed low thermal conductivity in the CuSbSe2 compound. By introducing narrow band-gap Cu3SbSe4 into the CuSbSe2 matrix, the carrier concentration and mobility can be tuned effectively; thus the power factor has been improved remarkably. As a consequence, the figure of merit (ZT) is increased by a factor of 1.6 at 623 K, from 0.25 (matrix) to 0.41.
登录
查看更多内容
影响因子:
2.9
作者:
Dong, Yongkwan;Khabibullin, Artem R.;Woods, Lilia M.
通讯作者:
Woods, Lilia M.
影响因子:
41.2
作者:
Liu, Huili;Shi, Xun;Snyder, G. Jeffrey
通讯作者:
Snyder, G. Jeffrey
影响因子:
3.9
作者:
Yang, Jueming;Yan, Yuli;Yang, Gui
通讯作者:
Yang, Gui
影响因子:
8.6
作者:
E. J. Skoug;D. Morelli
通讯作者:
E. J. Skoug;D. Morelli
影响因子:
64.8
作者:
Zhao, Li-Dong;Lo, Shih-Han;Kanatzidis, Mercouri G.
通讯作者:
Kanatzidis, Mercouri G.