| 학회 |
한국재료학회 |
| 학술대회 |
2018년 봄 (05/16 ~ 05/18, 삼척 쏠비치 호텔&리조트) |
| 권호 |
24권 1호 |
| 발표분야 |
3. 나노입자 합성 및 응용-오거나이저: 배성환 교수(경남대) |
| 제목 |
Synthesis of 2D bismuth chalcogenide heterostructured nanoplates and their enhanced thermoelectric properties |
| 초록 |
Controlled synthesis of 2D heterostructures is highly desirable not only from fundamental scientific perspective but also to take advantage of the emergent properties that cannot be achieved from each individual counterpart. Herein, we demonstrate a scalable synthesis of 2D bismuth chalcogenide heterostructures such as core/shell (Bi2Se3@Bi2Te3) and core/multi-shell nanoplates (Bi2Se3@Bi2Te3@Bi2Se3, Bi2Se3@Bi2Te3@Bi2Se3@Bi2Te3) through a successive epitaxial growth of Bi2Se3 and Bi2Te3. The relative dimensions of the constituting layers are controllable through the molar ratios of the precursors added to the seed nanoplate solution. The nanoplates are pelletized into bulk sample and thermoelectric figure of merit (ZT) of ~0.71 at 450 K could be obtained for the bulk pellet of Bi2Se3@Bi2Te3 nanoplates, which is much higher than that of bulk pellet composed of pure Bi2Te3 nanoplates due to a simultaneous improvement in electronic and thermal transport properties. |
| 저자 |
민유호, 최종진, 안철우, 김종우, 황건태, 윤운하, 한병동
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| 소속 |
한국기계(연) |
| 키워드 |
solution-based synthesis; Bi<SUB>2</SUB>Te<SUB>3</SUB>; Bi<SUB>2</SUB>Se<SUB>3</SUB>; nanoplates; thermoelectrics
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| E-Mail |
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