Interface effects on thermal conductivity of Bi/Te core-shell nanowires

Joohoon Kang, Jinhee Ham, Jong Wook Roh, Seunghyun Lee, Wooyoung Lee

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

The formation of variable 1D heterostructure including core-shell and tubular nanowire is of particular significance with respect to potential applications for the thermoelectric device with the enhanced figure of merit (ZT=S2σT/κ). We report Bi-Te core/shell and Te tubular nanowire fabrication based on the stress induced method. Fig. 1 schematically shows the nanowire fabrication process. Bi nanowires are grown on the Si substrate by the stress-induced method, and then Te is evaporated on the Bi nanowires. Fig. 2 is TEM image clearly shows core/shell structure for which effective phonon scattering and quantum confinement effect are expected. Our results demonstrate that various 1D heterostructure like Bi-Te core/shell and Te tubular nanowire can be grown successfully by the stress-induced method. Based on the result of electrical transport measurement and its characteristic morphology of rough surface, we will measure Seebeck coefficient and thermal conductivity in the future work.

Original languageEnglish
Title of host publicationINEC 2010 - 2010 3rd International Nanoelectronics Conference, Proceedings
Pages115-116
Number of pages2
DOIs
Publication statusPublished - 2010 May 5
Event2010 3rd International Nanoelectronics Conference, INEC 2010 - Hongkong, China
Duration: 2010 Jan 32010 Jan 8

Publication series

NameINEC 2010 - 2010 3rd International Nanoelectronics Conference, Proceedings

Other

Other2010 3rd International Nanoelectronics Conference, INEC 2010
CountryChina
CityHongkong
Period10/1/310/1/8

All Science Journal Classification (ASJC) codes

  • Electrical and Electronic Engineering

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    Kang, J., Ham, J., Roh, J. W., Lee, S., & Lee, W. (2010). Interface effects on thermal conductivity of Bi/Te core-shell nanowires. In INEC 2010 - 2010 3rd International Nanoelectronics Conference, Proceedings (pp. 115-116). [5424564] (INEC 2010 - 2010 3rd International Nanoelectronics Conference, Proceedings). https://doi.org/10.1109/INEC.2010.5424564