Thermoelectric power factor of pure and doped ZnSb via DFT based defect calculations

The peak zT is attained for hydrothermally synthesized Bi0.83Zn0.05Sb0.12 nanoalloy due to the significantly enhanced thermoelectric power factor and relatively low thermal conductivity.

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Effects of Oxygen-Reduction on Thermoelectric Properties of Sr0.61Ba0.39Nb2O6 Ceramics

Materials Science Forum ◽

10.4028/www.scientific.net/msf.787.210 ◽

2014 ◽

Vol 787 ◽

pp. 210-214 ◽

Cited By ~ 1

Author(s):

Yi Li ◽

Jian Liu ◽

Chun Lei Wang ◽

Wen Bin Su ◽

Yuan Hu Zhu ◽

...

Keyword(s):

Thermal Conductivity ◽

Electrical Resistivity ◽

Oxygen Reduction ◽

Thermoelectric Power ◽

Thermoelectric Properties ◽

Power Factor ◽

Figure Of Merit ◽

Thermoelectric Figure Of Merit ◽

Thermoelectric Figure ◽

Thermoelectric Power Factor

The thermoelectric properties of Sr0.61Ba0.39Nb2O6 ceramics, reduced in various conditions, were investigated in the temperature range from 323K to 1073K. Both the electrical resistivity and the absolute Seebeck coefficient decreased with the deepening degree of oxygen-reduction. However, the decrease of the electrical resistivity had a major influence on the thermoelectric power factor. Therefore, the more heavily reduced sample can gain the higher value of thermoelectric power factor. It has been observed that the thermal conductivity increased with the deepening degree of oxygen-reduction, which indicates that the scattering of the oxygen vacancies produced by reduction does not play a dominant role in the thermal conduction. In spite of the increase of the thermal conductivity, the oxygen-reduction still promoted the thermoelectric figure of merit via the increase of the thermoelectric power factor. And the most heavily reduced Sr0.61Ba0.39Nb2O6 ceramic has the highest thermoelectric figure of merit (~0.18 at 1073 K) among all the samples.

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High thermoelectric power-factor composites based on flexible three-dimensional graphene and polyaniline

Nanoscale ◽

10.1039/c8nr10537e ◽

2019 ◽

Vol 11 (14) ◽

pp. 6552-6560 ◽

Cited By ~ 10

Author(s):

Yu-Yun Hsieh ◽

Yu Zhang ◽

Lu Zhang ◽

Yanbo Fang ◽

Sathya Narayan Kanakaraaj ◽

...

Keyword(s):

Uniform Distribution ◽

Thermoelectric Power ◽

Thermoelectric Properties ◽

Power Factor ◽

Three Dimensional ◽

Thermoelectric Power Factor ◽

Thermoelectric Nanocomposites

Uniform distribution of strong π–π interfaces between PANI and graphene across the whole macrostructure enhances the thermoelectric properties of hybrid thermoelectric nanocomposites.

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Secondary phase induced electrical conductivity and improvement in thermoelectric power factor of zinc antimonide films

Materials Today Energy ◽

10.1016/j.mtener.2019.06.001 ◽

2019 ◽

Vol 13 ◽

pp. 249-255 ◽

Cited By ~ 17

Author(s):

Peter P. Murmu ◽

Shen V. Chong ◽

James Storey ◽

Sergey Rubanov ◽

John Kennedy

Keyword(s):

Electrical Conductivity ◽

Thermoelectric Power ◽

Power Factor ◽

Secondary Phase ◽

Thermoelectric Power Factor ◽

Zinc Antimonide

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PANI/graphene nanocomposite films with high thermoelectric properties by enhanced molecular ordering

Journal of Materials Chemistry A ◽

10.1039/c4ta06422d ◽

2015 ◽

Vol 3 (13) ◽

pp. 7086-7092 ◽

Cited By ~ 115

Author(s):

Liming Wang ◽

Qin Yao ◽

Hui Bi ◽

Fuqiang Huang ◽

Qun Wang ◽

...

Keyword(s):

Thermoelectric Power ◽

Thermoelectric Properties ◽

Power Factor ◽

Solution Process ◽

Nanocomposite Films ◽

Thermoelectric Power Factor ◽

Graphene Nanocomposites ◽

Molecular Ordering ◽

Graphene Nanocomposite

A combination of in situ polymerization and a solution process was adopted to prepare PANI/graphene nanocomposites with a large thermoelectric power factor.

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Self-assisted nucleation and growth of [010]-oriented Sb2Se3 whiskers: the crystal structure and thermoelectric properties

Journal of Materials Chemistry C ◽

10.1039/c5tc01364j ◽

2015 ◽

Vol 3 (40) ◽

pp. 10488-10493 ◽

Cited By ~ 8

Author(s):

Hsin-jay Wu ◽

Ping-chung Lee ◽

Fan-yun Chiu ◽

Sinn-wen Chen ◽

Yang-yuan Chen

Keyword(s):

Crystal Structure ◽

Thermoelectric Power ◽

Thermoelectric Properties ◽

Power Factor ◽

Nucleation And Growth ◽

The Self ◽

Thermoelectric Power Factor

The thermoelectric power factor of the self-assisted [010]-oriented Sb2Se3 is 104 times higher than that of Sb2Se3 bulk and is comparable to that of Sb2Se3 nanotubes, respectively.

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Two soluble polymers with lower ionization potentials: doping and thermoelectric properties

Journal of Materials Chemistry A ◽

10.1039/c5ta07526b ◽

2016 ◽

Vol 4 (4) ◽

pp. 1432-1439 ◽

Cited By ~ 9

Author(s):

Qian Zhang ◽

Yimeng Sun ◽

Yunke Qin ◽

Wei Xu ◽

Daoben Zhu

Keyword(s):

Thermoelectric Power ◽

Thermoelectric Properties ◽

Power Factor ◽

Ionization Potentials ◽

Thermoelectric Power Factor ◽

Soluble Polymers

By means of doping with LiTFSI solution in air, polymer PDTPT-C12 shows a thermoelectric power factor approaching 40 μW m−1 K−2 at 390 K.

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Impact of Annealing on the Thermoelectric Properties of Ge2Sb2Te5 Films

MRS Proceedings ◽

10.1557/opl.2012.1573 ◽

2012 ◽

Vol 1490 ◽

pp. 223-228

Author(s):

Jaeho Lee ◽

Takashi Kodama ◽

Yoonjin Won ◽

Mehdi Asheghi ◽

Kenneth E. Goodson

Keyword(s):

Phase Change ◽

Thermoelectric Power ◽

Thermoelectric Properties ◽

Power Factor ◽

Effective Medium Theory ◽

Careful Consideration ◽

Phase Changes ◽

Face Centered Cubic ◽

Thermoelectric Power Factor ◽

Medium Theory

ABSTRACTThermoelectric phenomena strongly influence the behavior of chalcogenide materials in nanoelectronic devices including phase-change memory cells. This paper presents the annealing temperature and phase dependent thermoelectric properties of Ge2Sb2Te5 films including the thermoelectric power factor and the figure of merit. The Ge2Sb2Te5 films annealed at different temperatures contain varying fractions of the amorphous and crystalline phases which strongly influence the thermoelectric properties. The thermoelectric power factor increases fom 3.2 μW/mK2 to 65 μW/mK2as the crystal phase changes from face-centered cubic to hexagonal close-packed. The data are consistent with modeling based on effective medium theory and suggest that careful consideration of phase purity is needed to improve the figures of merit for phase change memories and potentially for thermoelectric energy conversion applications.

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Improved Thermoelectric Behavior of Super-Growth Carbon Nanotube Using Tetrathiafulvalene-Tetracyanoquinodimethane Nanoparticles

Materials Science Forum ◽

10.4028/www.scientific.net/msf.990.209 ◽

2020 ◽

Vol 990 ◽

pp. 209-214 ◽

Cited By ~ 1

Author(s):

Shinichi Hata ◽

Takahiro Yoshizumi ◽

Satoshi Hoshino ◽

Mio Gotsubo ◽

Yukihide Shiraishi ◽

...

Keyword(s):

Charge Transfer ◽

Carbon Nanotube ◽

Thermoelectric Power ◽

Thermoelectric Properties ◽

Power Factor ◽

Charge Transfer Complex ◽

Inorganic Materials ◽

Thermoelectric Power Factor ◽

Popular Approach

The addition of inorganic materials with high thermoelectric properties is a popular approach to modulate the performance of carbon nanotube (CNT), but, the representative hybridization of CNT and toxic Te or Bi is not practical considering safety. Here, we report a CNT film including charge-transfer complex nanoparticles, which has higher generality and thermoelectric properties. Interestingly, the CNT film containing 30 wt% Tetrathiafulvalene-tetracyanoquinodimethane (TTF-TCNQ) nanoparticle exhibited a higher in-plane thermoelectric power factor (44.3 μW m-1 K-2) than the pure CNT (10.1 μW m-1 K-2), which is the first result of a nanostructured charge-transfer complex acting as a carrier promoter.

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