Point Defect Engineering of High-Performance Bismuth-Telluride-Based Thermoelectric Materials

2014 ◽  
Vol 24 (33) ◽  
pp. 5211-5218 ◽  
Author(s):  
Lipeng Hu ◽  
Tiejun Zhu ◽  
Xiaohua Liu ◽  
Xinbing Zhao
Keyword(s):  
Point Defect ◽  
Bismuth Telluride ◽  
Thermoelectric Materials ◽  
High Performance ◽  
Defect Engineering

High performance n-type bismuth telluride based alloys for mid-temperature power generation

2015 ◽  
Vol 3 (40) ◽  
pp. 10597-10603 ◽  
Author(s):  
Zhenglong Tang ◽  
Lipeng Hu ◽  
Tiejun Zhu ◽  
Xiaohua Liu ◽  
Xinbing Zhao
Keyword(s):  
Power Generation ◽  
Bismuth Telluride ◽  
Thermoelectric Materials ◽  
Hot Deformation ◽  
High Performance

We combine Se alloying, SbI3 doping and repeated hot deformation to obtain high-performance n-type Bi2Te3 based mid-temperature thermoelectric materials for power generation.

scholarly journals Computationally Guided Synthesis of High Performance Thermoelectric Materials: Defect Engineering in AgGaTe 2

2021 ◽  
pp. 2001262
Author(s):  
Yaqiong Zhong ◽  
Debalaya Sarker ◽  
Tao Fan ◽  
Liangliang Xu ◽  
Xie Li ◽  
...  
Keyword(s):  
Thermoelectric Materials ◽  
High Performance ◽  
Defect Engineering

Development of Thermoelectric Cooling Devices with Graded Structure

2005 ◽  
Vol 492-493 ◽  
pp. 151-156 ◽  
Author(s):  
Hitoshi Kohri ◽  
Ichiro Shiota
Keyword(s):  
Bismuth Telluride ◽  
Thermoelectric Materials ◽  
High Performance ◽  
Temperature Drop ◽  
Maximum Temperature ◽  
Large Temperature ◽  
Thermoelectric Cooling ◽  
Temperature Range ◽  
Graded Structure ◽  
Cooling Devices

Every thermoelectric material shows high performance at a specific narrow temperature range. The temperature range with high performance can be expanded by joining the materials with different peak temperature. This is the concept of a functionally graded material (FGM) for thermoelectric materials. Bismuth telluride is the best material for cooling devices at around room temperature. Then we investigated the thermoelectric cooling properties for bismuth telluride with two step graded structure. FGM samples were fabricated by three methods. The first FGM was synthesized by in situ method. The second one was fabricated by joining in a hot-press equipment. The last one was composed by joining with solder. Thermoelectric cooling properties were evaluated by observing the maximum temperature drop to electric current when the high temperature side was kept constant. The large temperature difference was obtained when the proper configuration of thermoelectric materials along the temperature gradient were performed. The coincidence of optimum electrical currents of composing materials is also essential to obtain the high cooling performance.

Thermoelectric Properties of Bismuth Telluride Based Materials Prepared by Powder Metallurgy Processing

2007 ◽  
Vol 336-338 ◽  
pp. 864-867
Author(s):  
Wei Ren ◽  
Xue Quan Liu ◽  
Xiao Lin Wang ◽  
Hong Yi Jiang
Keyword(s):  
Powder Metallurgy ◽  
Mechanical Strength ◽  
Thermoelectric Properties ◽  
Bismuth Telluride ◽  
Thermoelectric Materials ◽  
High Performance ◽  
Sintering Temperature ◽  
Plasma Sintering ◽  
Spark Plasma ◽  
P Type

Polycrystalline samples of Bi2Te3 based alloys were prepared by powder metallurgy processing including a melting-grinding and a sintering procedure of compacted pellets. Two sintering procedures as hot-pressing and spark plasma sintering (SPS) were employed. The thermoelectric properties and mechanical strength were measured in all case. Thermoelectric properties for p-type (Bi0.25Sb0.75)2Te3 and n-type Bi2(Te0.2Se0.8)3 changed with sintering temperature in both sintering methods. Mechanical strength and relative density increase with sintering temperature in two sintering procedures. The results firmly suggest that both sintering procedures are promising to obtain high performance thermoelectric materials.

Precision grain Boundary Engineering in commercial Bi2Te2.7Se0.3 thermoelectric materials towards high performance

2021 ◽  
Author(s):  
Shuankui Li ◽  
Zhongyuan Huang ◽  
Rui Wang ◽  
Chaoqi Wang ◽  
Wenguang Zhao ◽  
...  
Keyword(s):  
Grain Boundary ◽  
Thermoelectric Materials ◽  
High Performance ◽  
General Strategy ◽  
Grain Boundary Engineering

The strong interrelation between electrical and thermo parameters have been regarded as one of the biggest bottlenecks to obtain high-performance thermoelectric materials. Therefore, to explore a general strategy to fully...

Hierarchical molecular design of high-performance infrared nonlinear Ag2HgI4 material by defect engineering strategy

2021 ◽  
pp. 100432
Author(s):  
Can Yang ◽  
Xian Liu ◽  
Chunlin Teng ◽  
Xiaohong Cheng ◽  
Fei Liang ◽  
...  
Keyword(s):  
High Performance ◽  
Molecular Design ◽  
Defect Engineering ◽  
Engineering Strategy

Using point defect engineering to reduce the effects of energy nonmonochromaticity of B ion beams on shallow junction formation

2004 ◽  
Vol 96 (1) ◽  
pp. 919-921 ◽  
Author(s):  
Lin Shao ◽  
John Chen ◽  
Jianming Zhang ◽  
D. Tang ◽  
Sanjay Patel ◽  
...  
Keyword(s):  
Point Defect ◽  
Ion Beams ◽  
Defect Engineering ◽  
Shallow Junction ◽  
Junction Formation
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