NDLI: Enhanced thermoelectric properties of the Dirac semimetal Cd<sub>3</sub>As<sub>2</sub>

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Inorganic Chemistry Frontiers Vol - 3 Issue - 9

Inorganic Chemistry Frontiers Vol - 3 Issue - 8

Inorganic Chemistry Frontiers Vol - 3 Issue - 7

Inorganic Chemistry Frontiers Vol - 3 Issue - 6

Inorganic Chemistry Frontiers Vol - 3 Issue - 5

Inorganic Chemistry Frontiers Vol - 3 Issue - 4

Inorganic Chemistry Frontiers Vol - 3 Issue - 3

Inorganic Chemistry Frontiers Vol - 3 Issue - 2

Inorganic Chemistry Frontiers Vol -2

Inorganic Chemistry Frontiers Vol -1

Enhanced thermoelectric properties of the Dirac semimetal Cd₃As₂

Content Provider	Royal Society of Chemistry (RSC)
Author	Yang, Zhongqin Xiu, Faxian Zhang, Huisheng Zhou, Tong Zhang, Cheng
Copyright Year	2016
Abstract	We report an investigation of temperature- and doping-dependent thermoelectric behavior of the topological semimetal Cd3As2. The electrical conductivity, thermal conductivity, Seebeck coefficient, and figure of merit (ZT) are calculated using the Boltzmann transport theory. The calculated thermoelectric properties of the pristine Cd3As2 match well with the experimental results. Electron or hole doping, especially the latter, is found to much improve the thermoelectric behavior of the material. The optimum figure of merit ZT of Cd3As2 with electron doping is found to be about 0.5 at T = 700 K with n = 1 × 1020 cm−3, which is much larger than the maximum experimental value obtained for pristine Cd3As2 (∼0.15). For p-type Cd3As2, the maximal value of the Seebeck coefficient as a function of temperature increases apparently with the increase of the hole doping concentration and its position shifts drastically towards the lower temperature region, compared to that of n-type Cd3As2. This leads to an optimum figure of merit ZT of about 0.5, obtained at a low temperature of 500 K (p = 1 × 1020 cm−3) in the p-type Cd3As2.
Starting Page	1637
Ending Page	1643
Page Count	7
File Format	HTM / HTML PDF
ISSN	20521553
Volume Number	3
Issue Number	12
Journal	Inorganic Chemistry Frontiers
DOI	10.1039/c6qi00383d
Language	English
Publisher	Royal Society of Chemistry
Access Restriction	Open
Subject Keyword	Seebeck Thermoelectric materials Semimetal Electrical resistivity and conductivity Thermal conductivity Seebeck coefficient Dopant Extrinsic semiconductor
Content Type	Text
Resource Type	Article
Subject	Inorganic Chemistry

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