期刊
JOURNAL OF ELECTRONIC MATERIALS
卷 47, 期 6, 页码 3177-3183出版社
SPRINGER
DOI: 10.1007/s11664-018-6086-z
关键词
Transition-metal trichalcogenide; TiS3; quasi-one-dimensional conductor; anisotropy of thermoelectric properties; DFT calculation
Transition-metal trichalcogenides MX3 (M = Ti, Zr, Nb, Ta; X = S, Se) are well-known inorganic quasi-one-dimensional conductors. Among them, we have investigated the thermoelectric properties of titanium trisulfide TiS3 microribbon. The electrical resistivity rho, thermal conductivity kappa, and thermoelectric power S were measured using 3 omega method. The weight mean values were found to be rho = 5 m omega m and kappa = 10 W K-1 m(-1) along the one-dimensional direction (b-axis) of the TiS3 microribbon. Combined with the thermoelectric power S = -530 mu V K-1, the figure of merit was calculated as ZT = 0.0023. This efficiency is the same as that of randomly oriented bulk TiS3. We also estimated the anisotropy of sigma and kappa using the present results and those for randomly oriented bulk material. The obtained weak anisotropy for TiS3 is attributable to strong coupling between triangular columns consisting of TiS3 units. These experimental results are consistent with theoretical results obtained using density functional theory (DFT) calculations.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据