마이크로전자및패키징학회지 (Journal of the Microelectronics and Packaging Society)

  • 제20권1호
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  • Pages.15-19
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  • 2013
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  • 1226-9360(pISSN)
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  • 2287-7525(eISSN)
한국마이크로전자및패키징학회 (The Korean Microelectronics and Packaging Society)
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0.5 vol% TiO2 나노분말을 분산시킨 n형 Bi2(Te0.9Se0.1)3 가압소결체의 열전특성

Thermoelectric Properties of the n-type Bi2(Te0.9Se0.1)3 Processed by Hot Pressing with Dispersion of 0.5 vol% TiO2 Nanopowders

  • 박동현 (홍익대학교 신소재공학과) ;
  • 오태성 (홍익대학교 신소재공학과)
  • Park, D.H. (Department of Materials Science and Engineering, Hongik University) ;
  • Oh, T.S. (Department of Materials Science and Engineering, Hongik University)
  • 투고 : 2013.03.21
  • 심사 : 2013.03.28
  • 발행 : 2013.03.30
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초록

용해/분쇄법으로 제조한 n형 $Bi_2(Te_{0.9}Se_{0.1})_3$ 분말에 0.5 vol% $TiO_2$ 나노분말을 분산시켜 가압소결 후, $TiO_2$ 나노분말의 분산이 $Bi_2(Te_{0.9}Se_{0.1})_3$ 가압소결체의 열전특성에 미치는 영향을 분석하였다. $Bi_2(Te_{0.9}Se_{0.1})_3$ 가압소결체는 $2.93{\times}10^{-3}/K$의 최대 성능지수 및 1.02의 최대 무차원 성능지수의 우수한 열전특성을 나타내었다. 0.5 vol% $TiO_2$ 나노분말의 첨가에 의해 $Bi_2(Te_{0.9}Se_{0.1})_3$ 가압소결체의 최대 성능지수가 $2.09{\times}10^{-3}/K$로 감소하였으며, 최대 무차원 성능지수는 0.68로 저하하였다.

The n-type $Bi_2(Te_{0.9}Se_{0.1})_3$ powders, which were fabricated by melting/grinding method and dispersed with 0.5 vol% $TiO_2$ nanopowders, were hot-pressed in order to investigate the effects of $TiO_2$ dispersion on the thermoelectric properties of the hot-pressed $Bi_2(Te_{0.9}Se_{0.1})_3$. Excellent thermoelectric properties such as a maximum figure-of-merit of $2.93{\times}10^{-3}/K$ and a maximum dimensionless figure-of-merit of 1.02 were obtained for the hot-pressed $Bi_2(Te_{0.9}Se_{0.1})_3$. With dispersion of 0.5 vol% $TiO_2$ nanopowders, the maximum figure-of-merit and the maximum dimensionless figure-of-merit decreased to $2.09{\times}10^{-3}/K$ and 0.68, respectively.

키워드

참고문헌

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피인용 문헌

  1. 박막레그 직경에 따른 열전박막모듈의 열에너지 하비스팅 특성 비교 vol.25, pp.4, 2013, https://doi.org/10.6117/kmeps.2018.25.4.067