scholarly journals High Seebeck Coefficient in Mixtures of Conjugated Polymers

2017 ◽  
Vol 28 (15) ◽  
pp. 1703280 ◽  
Author(s):  
Guangzheng Zuo ◽  
Xianjie Liu ◽  
Mats Fahlman ◽  
Martijn Kemerink
Keyword(s):  
Seebeck Coefficient ◽  
Conjugated Polymers ◽  
High Seebeck Coefficient

Optimizing the thermoelectric performances of conjugated polymer backbones via incorporating tailored platinum(ii) acetylides

2020 ◽  
Vol 11 (21) ◽  
pp. 3627-3636
Author(s):  
Chunfa Liu ◽  
Xiaojun Yin ◽  
Jianwen Liu ◽  
Chunmei Gao ◽  
Lei Wang
Keyword(s):  
Seebeck Coefficient ◽  
Conjugated Polymers ◽  
Conjugated Polymer ◽  
High Conductivity ◽  
High Seebeck Coefficient

Conjugated polymers incorporated with platinum acetylides offer an effective approach to realizing both high conductivity and high Seebeck coefficient values.

Thermoelectric Properties of Semiconducting Intermetallic Compounds: FeGa3and RuGa3

2003 ◽  
Vol 793 ◽  
Author(s):  
Y. Amagai ◽  
A. Yamamoto ◽  
C. H. Lee ◽  
H. Takazawa ◽  
T. Noguchi ◽  
...  
Keyword(s):  
Thermal Conductivity ◽  
Electrical Resistivity ◽  
High Temperature ◽  
Seebeck Coefficient ◽  
Transport Properties ◽  
Figure Of Merit ◽  
Room Temperature ◽  
Thermoelectric Figure Of Merit ◽  
Thermoelectric Figure ◽  
High Seebeck Coefficient

ABSTRACTWe report transport properties of polycrystalline TMGa3(TM = Fe and Ru) compounds in the temperature range 313K<T<973K. These compounds exhibit semiconductorlike behavior with relatively high Seebeck coefficient, electrical resistivity, and Hall carrier concentrations at room temperature in the range of 1017- 1018cm−3. Seebeck coefficient measurements reveal that FeGa3isn-type material, while the Seebeck coefficient of RuGa3changes signs rapidly from large positive values to large negative values around 450K. The thermal conductivity of these compounds is estimated to be 3.5Wm−1K−1at room temperature and decreased to 2.5Wm−1K−1for FeGa3and 2.0Wm−1K−1for RuGa3at high temperature. The resulting thermoelectric figure of merit,ZT, at 945K for RuGa3reaches 0.18.

Temperature-dependent hard X-ray photoemission spectra of ternary Tl compounds with high Seebeck coefficient

2009 ◽  
Vol 6 (5) ◽  
pp. 993-996 ◽  
Author(s):  
Kojiro Mimura ◽  
Takahiko Ishizu ◽  
Kazuya Yamamoto ◽  
Junta Takasu ◽  
Yuri Yonehira ◽  
...  
Keyword(s):  
Seebeck Coefficient ◽  
Temperature Dependent ◽  
X Ray ◽  
High Seebeck Coefficient

Design and evaluation of n-type Si1-xGex as a thermoelectric-conversion material

2007 ◽  
Vol 1044 ◽  
Author(s):  
Tomohiro Imai ◽  
Tsutomu Iida ◽  
Yuki Miyata ◽  
Takashi Itoh ◽  
Hiroki Funashima ◽  
...  
Keyword(s):  
Seebeck Coefficient ◽  
Thermoelectric Power ◽  
Electronic Band Structure ◽  
Local Density ◽  
Band Structure Calculation ◽  
Full Potential ◽  
Electronic Band ◽  
Thermoelectric Conversion ◽  
High Seebeck Coefficient ◽  
Flapw Method

AbstractSi1-xGex alloys show the high power generating efficiency as a thermoelectric- conversion material. We evaluate the thermoelectric power of the n-type SiGe system on the basis of the first principles calculations. The electronic-band-structure calculation is performed using all-electron full-potential linearized augmented-plane-wave (FLAPW) method within the local density approximation (LDA). The Seebeck coefficient is analyzed by the Bloch-Boltzmann equation. We find that the ordered rhombohedral SiGe has high Seebeck coefficient in comparison with zincblende SiGe. The efficiency of the thermoelectric power in Si1-xGex is gained by the local atomic configuration rather than the Ge concentration.

scholarly journals N-Type Bismuth Telluride Nanocomposite Materials Optimization for Thermoelectric Generators in Wearable Applications

Materials ◽  
2019 ◽  
Vol 12 (9) ◽  
pp. 1529 ◽  
Author(s):  
Amin Nozariasbmarz ◽  
Jerzy S. Krasinski ◽  
Daryoosh Vashaee
Keyword(s):  
Thermal Conductivity ◽  
Power Generation ◽  
Seebeck Coefficient ◽  
Figure Of Merit ◽  
Microwave Cavity ◽  
Thermoelectric Figure Of Merit ◽  
Thermoelectric Figure ◽  
Efficient Operation ◽  
High Seebeck Coefficient ◽  
Body Heat

Thermoelectric materials could play a crucial role in the future of wearable electronic devices. They can continuously generate electricity from body heat. For efficient operation in wearable systems, in addition to a high thermoelectric figure of merit, zT, the thermoelectric material must have low thermal conductivity and a high Seebeck coefficient. In this study, we successfully synthesized high-performance nanocomposites of n-type Bi2Te2.7Se0.3, optimized especially for body heat harvesting and power generation applications. Different techniques such as dopant optimization, glass inclusion, microwave radiation in a single mode microwave cavity, and sintering conditions were used to optimize the temperature-dependent thermoelectric properties of Bi2Te2.7Se0.3. The effects of these techniques were studied and compared with each other. A room temperature thermal conductivity as low as 0.65 W/mK and high Seebeck coefficient of −297 μV/K were obtained for a wearable application, while maintaining a high thermoelectric figure of merit, zT, of 0.87 and an average zT of 0.82 over the entire temperature range of 25 °C to 225 °C, which makes the material appropriate for a variety of power generation applications.

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