Analysis of the Microstructure of Mg2Si Thermoelectric Devices

High-performance Mg 2 Si thermoelectric devices have been obtained by spark plasma sintering of high-purity, pre-synthesized, all-molten Mg 2 Si powder. We studied the effects of source powder particle size on thermoelectric performance. To improve the performance, further investigation of the micro...

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Veröffentlicht in:	Journal of electronic materials 2014-06, Vol.43 (6), p.2174-2178
Hauptverfasser:	Nakamura, Shigeyuki, Mori, Yoshihisa, Takarabe, Ken’ichi
Format:	Artikel
Sprache:	eng
Schlagworte:	Applied sciences Characterization and Evaluation of Materials Chemistry and Materials Science Condensed matter: electronic structure, electrical, magnetic, and optical properties Condensed matter: structure, mechanical and thermal properties Conductivity phenomena in semiconductors and insulators Defects and impurities in crystals microstructure Electronic transport in condensed matter Electronics Electronics and Microelectronics Exact sciences and technology Grain and twin boundaries Instrumentation Materials Science Optical and Electronic Materials Physics Semiconductor electronics. Microelectronics. Optoelectronics. Solid state devices Solid State Physics Structure of solids and liquids crystallography Thermoelectric and thermomagnetic effects Thermoelectric, pyroelectric devices, etc
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Beschreibung
Zusammenfassung:	High-performance Mg 2 Si thermoelectric devices have been obtained by spark plasma sintering of high-purity, pre-synthesized, all-molten Mg 2 Si powder. We studied the effects of source powder particle size on thermoelectric performance. To improve the performance, further investigation of the microstructure of the devices is needed. In this work we studied the microstructure of grain boundaries and interfaces between electrodes and Mg 2 Si sintered bodies to increase understanding of Mg 2 Si thermoelectric devices.
ISSN:	0361-5235 1543-186X
DOI:	10.1007/s11664-014-3000-1