| 학회 |
한국재료학회 |
| 학술대회 |
2020년 가을 (11/18 ~ 11/20, 휘닉스 제주 섭지코지) |
| 권호 |
26권 1호 |
| 발표분야 |
C. 에너지 재료 분과 |
| 제목 |
결함제어를 통한 고특성 열전소재 디자인 |
| 초록 |
Herein, we propose a new design rule to systematically control the concentration of vacancies and carriers in IV-VI rock-salt materials through introducing V-VI chalcogenide materials, where V, IV, and vacancy are occupied in cationic sites and VI anions are located on anionic sites. We found highly dense dislocations created within grains through the clustering of vacancies, leading to very low lattice thermal conductivity which is similar with the theoretical minimum value of target materials. In addition, power factor was improved by controlling the amount of donors (V cations). As a result, the figure of merit ZT was enhanced due to the improved power factor together with low thermal conductivity in this study. |
| 저자 |
민유호1, 장종문1, 황건태2, 김종우1, 안철우1, 최종진1, 한병동1, 윤운하1
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| 소속 |
1재료(연), 2부경대 |
| 키워드 |
Vacancy engineering; Dislocation; Thermoelectric; ZT
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| E-Mail |
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