발간논문

Home > KJMM 논문 > 발간논문

Vol.36, No.9, 1524 ~ 1530, 1998
Title
Thermoelectric Properties of the Hot - Pressed (Bi0.2Sb0.8)2Te3 with Addition of BN as Scattering Centers
이준수 , 김항종 , 오태성 , 현도빈 Jun Soo Lee , Hang Chong Kim , Tae Sung Oh , Dow Bin Hyun
Abstract
Thermoelectric properties of the polycrystalline (Bi_(0.2)Sb_(0.8))₂Te₃, fabricated by mechanical alloying and hot-pressing, were investigated with addition of BN as scattering centers. The Seebeck coefficient of the hot-pressed (Bi_(0.2)Sb_(0.8))₂Te₃ was not affected by addition of BN. The thermal conductivity of the hot-pressed (Bi_(0.2)Sb_(0.8))₂Te₃ decreased with increasing the volume fraction of BN due to the reduction of k_(el) However, the lattice thermal conductivity k_(ph) was little varied with addition of BN. The figure-of-merit of the hot-pressed (Bi_(0.2)Sb_(0.8))₂Te₃ was 3.05×10^(-3)/K without addition of BN and was lowered with increasing the volume fraction of BN, because the increase of the electrical resistivity was larger than the reduction of the thermal conductivity due to the grain refinement.
Key Words
| PDF
대한금속∙재료학회 │ (06633) 서울시 서초구 서초대로 56길 38 대한금속∙재료학회 회관 (서초1동 1666-12번지)
Tel : 070-4266-1646 │ FAX : 02-557-1080 │ E-mail : metal@kim.or.kr
Copyright ⓒ 2013 사단법인 대한금속∙재료학회 All rights reserved.