Observation of Energy-Dependent Carrier Scattering in Conducting Polymer Nanowire Blends for Enhanced Thermoelectric Performance

2020 ◽  
Vol 12 (30) ◽  
pp. 34451-34461 ◽  
Author(s):  
Xinyi Chen ◽  
Wen Shi ◽  
Kun Zhang
Keyword(s):  
Conducting Polymer ◽  
Thermoelectric Performance ◽  
Carrier Scattering ◽  
Energy Dependent

Tuning thermoelectric performance by nanostructure evolution of a conducting polymer

2015 ◽  
Vol 3 (42) ◽  
pp. 20896-20902 ◽  
Author(s):  
Xincheng Hu ◽  
Guangming Chen ◽  
Xin Wang ◽  
Hanfu Wang
Keyword(s):  
Conducting Polymer ◽  
Thermoelectric Performance

The thermoelectric performance of PEDOT can be conveniently and effectively tuned by nanostructure evolution.

Enhanced thermoelectric performance through carrier scattering at heterojunction potentials in BiSbTe based composites with Cu3SbSe4 nanoinclusions

2015 ◽  
Vol 3 (27) ◽  
pp. 7045-7052 ◽  
Author(s):  
Yuanyue Li ◽  
Di Li ◽  
Xiaoying Qin ◽  
Xiuhui Yang ◽  
Yongfei Liu ◽  
...  
Keyword(s):  
Thermal Conductivity ◽  
Power Factor ◽  
Figure Of Merit ◽  
Lattice Thermal Conductivity ◽  
Thermoelectric Performance ◽  
Thermoelectric Figure Of Merit ◽  
Thermoelectric Figure ◽  
Carrier Scattering ◽  
Interface Scattering

Owing to enhanced power factor and reduced lattice thermal conductivity through interface scattering, a largest thermoelectric figure of merit ZT = 1.61 is achieved at 467 K for BiSbTe based composite with Cu3SbSe4 nanoinclusions.

scholarly journals Manipulation of ionized impurity scattering for achieving high thermoelectric performance in n-type Mg3Sb2-based materials

2017 ◽  
Vol 114 (40) ◽  
pp. 10548-10553 ◽  
Author(s):  
Jun Mao ◽  
Jing Shuai ◽  
Shaowei Song ◽  
Yixuan Wu ◽  
Rebecca Dally ◽  
...  
Keyword(s):  
Power Factor ◽  
Carrier Mobility ◽  
Phonon Scattering ◽  
Impurity Scattering ◽  
Substantial Improvement ◽  
Thermoelectric Performance ◽  
Scattering Mechanism ◽  
Carrier Scattering ◽  
Ionized Impurity Scattering ◽  
Higher Carrier Mobility

Achieving higher carrier mobility plays a pivotal role for obtaining potentially high thermoelectric performance. In principle, the carrier mobility is governed by the band structure as well as by the carrier scattering mechanism. Here, we demonstrate that by manipulating the carrier scattering mechanism in n-type Mg3Sb2-based materials, a substantial improvement in carrier mobility, and hence the power factor, can be achieved. In this work, Fe, Co, Hf, and Ta are doped on the Mg site of Mg3.2Sb1.5Bi0.49Te0.01, where the ionized impurity scattering crosses over to mixed ionized impurity and acoustic phonon scattering. A significant improvement in Hall mobility from ∼16 to ∼81 cm2⋅V−1⋅s−1 is obtained, thus leading to a notably enhanced power factor of ∼13 μW⋅cm−1⋅K−2 from ∼5 μW⋅cm−1⋅K−2. A simultaneous reduction in thermal conductivity is also achieved. Collectively, a figure of merit (ZT) of ∼1.7 is obtained at 773 K in Mg3.1Co0.1Sb1.5Bi0.49Te0.01. The concept of manipulating the carrier scattering mechanism to improve the mobility should also be applicable to other material systems.

Improved Figure of Merit of Cu2SnSe3 via Band Structure Modification and Energy-Dependent Carrier Scattering

2020 ◽  
Vol 12 (17) ◽  
pp. 19693-19700 ◽  
Author(s):  
Hongwei Ming ◽  
Chen Zhu ◽  
Xiaoying Qin ◽  
Jian Zhang ◽  
Di Li ◽  
...  
Keyword(s):  
Band Structure ◽  
Figure Of Merit ◽  
Structure Modification ◽  
Carrier Scattering ◽  
Energy Dependent

A strategy to improve the thermoelectric performance of conducting polymer nanostructures

2017 ◽  
Vol 5 (1) ◽  
pp. 47-53 ◽  
Author(s):  
Jian Zhao ◽  
Dongxing Tan ◽  
Guangming Chen
Keyword(s):  
Conducting Polymer ◽  
Chemical Reduction ◽  
Thermoelectric Performance ◽  
Polymer Nanostructures

The dependence of the PEDOT nanostructure’s thermoelectric performance on post-treatments with acid (H2SO4) and chemical reduction (Na2SO3) was reported.

Decoupling phonon and carrier scattering at carbon nanotube/Bi2Te3 interfaces for improved thermoelectric performance

Carbon ◽  
2020 ◽  
Vol 170 ◽  
pp. 191-198 ◽  
Author(s):  
Yang Zhao ◽  
Ying Li ◽  
Jixiang Qiao ◽  
Song Jiang ◽  
Pengyan Mao ◽  
...  
Keyword(s):  
Carbon Nanotube ◽  
Thermoelectric Performance ◽  
Carrier Scattering
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