Thermoelectric properties of textured Zn1−Al O ceramics prepared by spark plasma sintering of hydrothermally synthesized rod-shaped powders
Source abstract
Abstract
Abstract Textured Zn 1− x Al x O ( x =0, 0.01, 0.02, 0.04) ceramics were prepared by spark plasma sintering (SPS) using rod-shaped powders synthesized by hydrothermal synthesis. An orientation degree of up to 0.6 was obtained after SPS because the precursor powders are dominantly grown along the [0001] direction. Along with a low Al 3+ solution level, no trace of ZnAl 2 O 4 was detected in both the powders and sintered bulks due to a high pH value of 8.5–9.0 during hydrothermal synthesis. The textured structure of the resultant Zn 1− x Al x O bulks possesses high carrier mobility, leading to enhanced electrical conductivity, which increased from 68.2 S cm −1 to 749.2 S cm −1 for the Zn 0.96 Al 0.04 O composition as the temperature is increased from 373 K to 573 K. As a result, the textured Zn 0.96 Al 0.04 O ceramic exhibited an enhanced power factor of up to 4.7 W m −1 K −2 at 573 K.
Source: openaire · Quality: candidate unverified · Source record ↗
Research context
OpenAlex topics: Advanced Thermoelectric Materials and Devices · ZnO doping and properties · Gas Sensing Nanomaterials and Sensors
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
References (32)
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1. High-performance flat-panel solar thermoelectric generators with high thermal concentration10.1038/nmat3013 ↗
2. Nanostructured AgPbmSbTem+2 system bulk materials with enhanced thermoelectric performance10.1021/ja7110652 ↗
3. High-performance nanostructured thermoelectric materials10.1038/asiamat.2010.138 ↗
4. Thermoelectric properties of the tetradymite-type Bi2Te2S–Sb2Te2S solid solution10.1016/j.materresbull.2009.05.002 ↗
5. Electronic structure of conducting Al-doped ZnO films as a function of Al doping concentration10.1016/j.ceramint.2014.09.102 ↗
6. Influence of Cr2O3 on ZnO–Bi2O3–MnO2 based varistor ceramics10.1016/j.ceramint.2014.02.035 ↗
7. Microwave dielectric properties of Al-doped ZnO powders synthesized by coprecipitation method10.1016/j.ceramint.2013.04.056 ↗
8. High-temperature thermoelectric properties of (Zn1−xAlx)O10.1063/1.360976 ↗
9. Thermoelectric properties of Al-doped ZnO as a promising oxide material for high-temperature thermoelectric conversion10.1039/a602506d ↗
10. Al-Doped zinc oxide nanocomposites with enhanced thermoelectric properties10.1021/nl202439h ↗
11. High-temperature charge transport and thermoelectric properties of a degenerately Al-doped ZnO nanocomposite10.1039/c2jm31763j ↗
12. Effects of morphology on the thermoelectric properties of Al-doped ZnO10.1039/c3ra47617k ↗
13. An enhancement of a thermoelectric power factor in a Ga-doped ZnO system: a chemical compression by enlarged Ga solubility10.1063/1.4729560 ↗
14. NiO added Zn1−xNixO (0≤x≤0.05) for thermoelectric power generation10.1016/j.jallcom.2008.05.101 ↗
15. Preparation of Ni-doped ZnO ceramics for thermoelectric applications10.1016/j.jeurceramsoc.2011.07.006 ↗
16. PbTe-based thermoelectric nanocomposites with reduced thermal conductivity by SiC nanodispersion10.1063/1.4869220 ↗
17. Preparation and thermoelectric properties of Al-doped ZnO ceramics10.1016/S0921-5107(03)00280-0 ↗
18. Effect of ZnAl2O4 phase on thermoelectric properties of Al doped ZnO ceramics fabricated by spark plasma sintering10.1179/1432891714Z.000000000653 ↗
19. Preparation and thermoelectric property of highly oriented Al-doped ZnO ceramics by a high magnetic field
20. Orientation dependence of transport property and microstructural characterization of Al-doped ZnO ceramics10.1016/j.actamat.2007.04.046 ↗
21. Thermoelectric properties of highly textured (ZnO)5In2O3 ceramics10.1039/b101474i ↗
22. Thermoelectric performance of yttrium-substituted (ZnO)5In2O3 improved through ceramic texturing10.1143/JJAP.41.731 ↗
23. Controllable growth of ZnO microcrystals by a capping-molecule-assisted hydrothermal process10.1021/cg049727f ↗
24. Synthesis of flower-like ZnO nanostructures by an organic-free hydrothermal process10.1088/0957-4484/15/5/037 ↗
25. Low temperature synthesis of flowerlike ZnO nanostructures by cetyltrimethylammonium bromide-assisted hydrothermal process10.1021/jp036826f ↗
26. Hydrothermal synthesis of one-dimensional ZnO nanostructures with different aspect ratios10.1039/b316435g ↗
27. Control of anisotropic electrical transport property of Bi2S3 thermoelectric polycrystals10.1039/c1jm11069a ↗
28. Hydrothermal synthesis of Al-doped ZnO nanorod arrays on Si substrate10.1016/j.physb.2009.08.297 ↗
29. Distribution and solubility limit of Al in Al2O3-doped ZnO sintered body10.2109/jcersj.115.254 ↗
30. Microstructure and thermoelectric properties of Zn1−xAlxO ceramics fabricated by spark plasma sintering10.1016/j.jpcs.2010.06.006 ↗
31. Microstructure composite-like Bi2S3 polycrystals with enhanced thermoelectric properties10.1039/c2jm33603k ↗
32. Fabrication and properties of Bi2S3−xSex thermoelectric polycrystals10.1016/j.ssc.2013.03.013 ↗