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Vol.48, No.5, 445 ~ 449, 2010
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| Title |
| Bi-Te Core/Shell Nanowires Synthesis Based on On-Film Formation of Nanowires Method for Thermoelectric Applications |
| 강주훈 Joo Hoon Kang , 함진희 Jin Hee Ham , 노종욱 Jong Wook Roh , 노진서 Jin Seo Noh , 이우영 Woo Young Lee |
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| Abstract |
| For an enhanced thermoelectric performance, one-dimensional heterostructure nanowires were created that consisted of aBi core and Te shell. The structure was fabricated by depositing Te in-situ onto a Bi nanowire grown by our unique OFF-ON (on-film formation of nanowires) method. After examining a cross-sectional TEM image, it was found that diffusive interface was formed between Bi and Te. Selected area electron diffraction revealed that the crystallinity of the Te shell was some what lower compared to the highly single-crystalline Bi core. The Bi-Te core/shell nanowires can be a smart structure that suppresses phonon transport by several scattering mechanisms, making the OFF-ON method the simplest way to realize that structure. |
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| Key Words |
| nanostructured materials, thermoelectic materials, microstructure, thermal conductivity, deposition |
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