Synthesis, fabrication, and characterization of multidimensional nanoparticle based thermoelectric materials composed of bismuth, antimony, and tellurium

Derrick Mott, Nguyen T. Mai, Nguyen T.B. Thuy, Teruyoshi Sakata, Mikio Koyano, Shinya Maenosono

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review


With the event of nanotechnology, the field of thermoelectric (TE) materials has been reinvigorated with many recent advances towards materials with high thermoelectric efficiency (dimensionless figure of merit, ZT). The realization of such materials opens up new avenues to the creation of devices that can be used in freon-less refrigeration, micro-electronic cooling, or for harnessing lost heat energy from sources such as car engines. In our own research work, we have successfully devised a synthetic technique towards nanoparticles composed of bismuth, antimony, and tellurium that has proven highly versatile in tuning both the composition and shape/structure of the resulting nanoparticles. The ability to control the nanoparticle composition and shape/structure are highly important as these are critical parameters that dictate the resulting devices TE activity. In a modified polyol synthetic technique, it was found that many complex composition, shape, and structure combinations could be obtained for the nanoparticles including Bi-Sb nanodiscs with controllable size, a heterostructure composed of Sb 2Te 3 nanodiscs deposited on Te nanowires, or small particles deposited on a (Bi 0.5Sb 0.5) 2Te 3 wire, just to name a few. By simply changing the capping ligands used in the synthesis, the nanoparticles resulting composition, morphology and structure could be changed, leading to a straightforward route towards TE nanoparticles with interesting properties. This presentation focuses on our recent study of the synthesis of bismuth, antimony, and tellurium composite nanoparticles with applications in thermoelectric materials in terms of understanding the underlying mechanisms of the synthetic technique, and characterization of the resulting nanomaterial properties.

Original languageEnglish
Title of host publicationNanoscale Heat Transfer - Thermoelectrics, Thermophotovoltaics and Emerging Thermal Devices
Number of pages6
Publication statusPublished - 2011
Event2011 MRS Spring Meeting - San Francisco, CA, United States
Duration: 2011 Apr 252011 Apr 29

Publication series

NameMaterials Research Society Symposium Proceedings
ISSN (Print)0272-9172


Conference2011 MRS Spring Meeting
Country/TerritoryUnited States
CitySan Francisco, CA


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