Microstructure Evolution of Ag-Alloyed PbTe-Based Compounds and Implications for Thermoelectric Performance
Abstract
:1. Introduction
2. Experimental Procedure
2.1. Materials Synthesis
2.2. Characterization Methods
2.2.1. Microstructure Analysis
2.2.2. Thermoelectric Property Measurements
3. Results
3.1. Microstructure Characterization
3.2. Thermoelectric Transport Properties
4. Discussion
4.1. Materials Processing and Microstructure Evolution
4.2. Electronic Transport Properties
4.3. Thermal Transport Properties
4.4. Thermoelectric Performance
5. Summary and Conclusions
Acknowledgments
Author Contributions
Conflicts of Interest
References
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Material | Aging Temperature [°C] | Aging Times [h] |
---|---|---|
As-cast (AC) (PbTe)0.95(Ag2Te)0.05 | 400 | 0, 2, 8, 32, 72, 106 |
450 | 0, 1, 2, 4, 8, 16, 32 | |
Hot-pressed (HP) (PbTe)0.97(Ag2Te)0.03 | 380 | 0, 0.5, 1, 2, 4, 6, 8, 16, 24, 48 |
Hot-pressed (HP) 0.04 at. % Bi + (PbTe)0.97(Ag2Te)0.03 | 380 | 0, 2, 6, 48 |
Aging Time (h) | Bulk Density (g·cm−3) | |
---|---|---|
Bi-Free | Bi-Alloyed | |
0 | 8.00 | 7.86 |
1 | 7.65 | 7.42 |
2 | 7.82 | 7.45 |
6 | 7.97 | 7.37 |
18 | 7.85 | 7.38 |
48 | 7.97 | 7.58 |
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Grossfeld, T.; Sheskin, A.; Gelbstein, Y.; Amouyal, Y. Microstructure Evolution of Ag-Alloyed PbTe-Based Compounds and Implications for Thermoelectric Performance. Crystals 2017, 7, 281. https://doi.org/10.3390/cryst7090281
Grossfeld T, Sheskin A, Gelbstein Y, Amouyal Y. Microstructure Evolution of Ag-Alloyed PbTe-Based Compounds and Implications for Thermoelectric Performance. Crystals. 2017; 7(9):281. https://doi.org/10.3390/cryst7090281
Chicago/Turabian StyleGrossfeld, Tom, Ariel Sheskin, Yaniv Gelbstein, and Yaron Amouyal. 2017. "Microstructure Evolution of Ag-Alloyed PbTe-Based Compounds and Implications for Thermoelectric Performance" Crystals 7, no. 9: 281. https://doi.org/10.3390/cryst7090281