High-temperature and high-pressure post-processing applied to sintered thermoelectric materials can create nanoscale defects, thereby enhancing their thermoelectric performance. Here, we investigate the effect of hot isostatic pressing (HIP) as a post-processing treatment on the thermoelectric properties of p-type Bi0.5Sb1.5Te3.0 compounds sintered via spark plasma sintering. The sample post-processed via HIP maintains its electronic transport properties despite the reduced microstructural texturing. Moreover, lattice thermal conductivity is significantly reduced owing to activated phonon scattering, which can be attributed to the nanoscale defects created during HIP, resulting in an ~18% increase in peak zT value, which reaches ~1.43 at 100oC. This study validates that HIP enhances the thermoelectric performance by controlling the thermal transport without having any detrimental effects on the electronic transport properties of thermoelectric materials.

Abstract
1. 서 론
2. 실험 방법
    2.1. P형 Bi0.5Sb1.5Te3.0 분말 및 소결체 제조
    2.2. 특성 평가
3. 결과 및 고찰
4. 결 론
감사의 글
References

• 정수호(한국재료연구원 분말재료연구본부 3D프린팅재료연구실) | Soo-Ho Jung (Department of 3D Printing Materials, Powder Materials Division, Korea Institute of Materials Science (KIMS))
• 우예진(한국재료연구원 분말재료연구본부 3D프린팅재료연구실) | Ye Jin Woo (Department of 3D Printing Materials, Powder Materials Division, Korea Institute of Materials Science (KIMS))
• 김경태(한국재료연구원 분말재료연구본부 3D프린팅재료연구실) | Kyung Tae Kim (Department of 3D Printing Materials, Powder Materials Division, Korea Institute of Materials Science (KIMS))
• 조승기(한국재료연구원 분말재료연구본부 3D프린팅재료연구실) | Seungki Jo (Department of 3D Printing Materials, Powder Materials Division, Korea Institute of Materials Science (KIMS)) Corresponding Author